./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.2.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_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/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_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.2.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/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_dca2ff1f-d35e-4080-80be-4246c086c4e1/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 6f032a278e247c25f95ab2bc0e622975c4cd6e35f7ad8b672dec44dde069d0ec
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 02:49:38,649 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 02:49:38,710 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 02:49:38,714 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 02:49:38,714 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 02:49:38,736 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 02:49:38,737 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 02:49:38,737 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 02:49:38,738 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 02:49:38,738 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 02:49:38,739 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 02:49:38,739 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 02:49:38,740 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 02:49:38,741 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 02:49:38,741 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 02:49:38,742 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 02:49:38,742 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 02:49:38,743 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 02:49:38,743 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 02:49:38,744 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 02:49:38,744 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 02:49:38,745 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 02:49:38,745 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 02:49:38,745 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 02:49:38,746 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 02:49:38,746 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 02:49:38,747 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 02:49:38,747 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 02:49:38,748 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:49:38,748 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 02:49:38,748 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 02:49:38,749 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 02:49:38,749 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 02:49:38,749 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 02:49:38,749 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 02:49:38,750 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 02:49:38,750 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 02:49:38,750 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 02:49:38,750 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 02:49:38,750 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_dca2ff1f-d35e-4080-80be-4246c086c4e1/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_dca2ff1f-d35e-4080-80be-4246c086c4e1/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 -> 6f032a278e247c25f95ab2bc0e622975c4cd6e35f7ad8b672dec44dde069d0ec
[2023-11-29 02:49:38,977 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 02:49:38,999 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 02:49:39,001 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 02:49:39,003 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 02:49:39,003 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 02:49:39,005 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.2.prop1-back-serstep.c
[2023-11-29 02:49:41,782 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 02:49:42,235 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 02:49:42,236 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.2.prop1-back-serstep.c
[2023-11-29 02:49:42,272 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/data/53b90795d/c4b3fb077a544a9caa0839f046a94b21/FLAG52e411851
[2023-11-29 02:49:42,287 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/data/53b90795d/c4b3fb077a544a9caa0839f046a94b21
[2023-11-29 02:49:42,290 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 02:49:42,292 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 02:49:42,293 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 02:49:42,293 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 02:49:42,299 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 02:49:42,300 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:49:42" (1/1) ...
[2023-11-29 02:49:42,301 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e5bde1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:42, skipping insertion in model container
[2023-11-29 02:49:42,301 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:49:42" (1/1) ...
[2023-11-29 02:49:42,503 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 02:49:42,793 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_dca2ff1f-d35e-4080-80be-4246c086c4e1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.2.prop1-back-serstep.c[1175,1188]
[2023-11-29 02:49:43,782 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:49:43,794 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 02:49:43,807 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_dca2ff1f-d35e-4080-80be-4246c086c4e1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.2.prop1-back-serstep.c[1175,1188]
[2023-11-29 02:49:44,485 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:49:44,500 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 02:49:44,501 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44 WrapperNode
[2023-11-29 02:49:44,501 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 02:49:44,502 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 02:49:44,502 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 02:49:44,502 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 02:49:44,510 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:44,766 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:47,334 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37613
[2023-11-29 02:49:47,335 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 02:49:47,335 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 02:49:47,335 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 02:49:47,335 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 02:49:47,345 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:47,345 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:47,983 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:48,385 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 02:49:48,386 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:48,386 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:49,019 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:49,160 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:49,256 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:49,350 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:49,882 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 02:49:49,883 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 02:49:49,883 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 02:49:49,883 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 02:49:49,884 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (1/1) ...
[2023-11-29 02:49:49,890 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:49:49,902 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:49:49,917 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 02:49:49,919 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 02:49:49,945 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 02:49:49,945 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 02:49:49,945 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 02:49:49,946 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 02:49:51,407 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 02:49:51,409 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 02:50:11,531 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 02:50:12,047 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 02:50:12,047 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 02:50:12,052 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:50:12 BoogieIcfgContainer
[2023-11-29 02:50:12,052 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 02:50:12,055 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 02:50:12,055 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 02:50:12,059 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 02:50:12,059 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:49:42" (1/3) ...
[2023-11-29 02:50:12,060 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7ebfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:50:12, skipping insertion in model container
[2023-11-29 02:50:12,060 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:44" (2/3) ...
[2023-11-29 02:50:12,060 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7ebfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:50:12, skipping insertion in model container
[2023-11-29 02:50:12,060 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:50:12" (3/3) ...
[2023-11-29 02:50:12,061 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synapse.2.prop1-back-serstep.c
[2023-11-29 02:50:12,080 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 02:50:12,080 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 02:50:12,257 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 02:50:12,263 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;@7f31e977, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 02:50:12,264 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 02:50:12,293 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 8308 states, 8306 states have (on average 1.6677100890922225) internal successors, (13852), 8307 states have internal predecessors, (13852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:12,341 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 739
[2023-11-29 02:50:12,342 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:12,343 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:50:12,343 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:12,348 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:12,349 INFO  L85        PathProgramCache]: Analyzing trace with hash 2099075437, now seen corresponding path program 1 times
[2023-11-29 02:50:12,358 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:12,359 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469275986]
[2023-11-29 02:50:12,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:12,360 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:13,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:15,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:50:15,500 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:15,501 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469275986]
[2023-11-29 02:50:15,501 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469275986] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:15,501 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:15,502 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:50:15,503 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076092805]
[2023-11-29 02:50:15,504 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:15,509 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:50:15,509 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:15,535 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:50:15,535 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:15,550 INFO  L87              Difference]: Start difference. First operand  has 8308 states, 8306 states have (on average 1.6677100890922225) internal successors, (13852), 8307 states have internal predecessors, (13852), 0 states have call successors, (0), 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 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:15,938 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:15,938 INFO  L93              Difference]: Finished difference Result 16426 states and 27390 transitions.
[2023-11-29 02:50:15,939 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:50:15,941 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 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 738
[2023-11-29 02:50:15,945 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:15,992 INFO  L225             Difference]: With dead ends: 16426
[2023-11-29 02:50:15,992 INFO  L226             Difference]: Without dead ends: 8308
[2023-11-29 02:50:16,006 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:16,009 INFO  L413           NwaCegarLoop]: 13845 mSDtfsCounter, 1 mSDsluCounter, 27685 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41530 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:16,010 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41530 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:16,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8308 states.
[2023-11-29 02:50:16,170 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8308 to 8308.
[2023-11-29 02:50:16,186 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8308 states, 8307 states have (on average 1.6672685686770194) internal successors, (13850), 8307 states have internal predecessors, (13850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:16,217 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8308 states to 8308 states and 13850 transitions.
[2023-11-29 02:50:16,218 INFO  L78                 Accepts]: Start accepts. Automaton has 8308 states and 13850 transitions. Word has length 738
[2023-11-29 02:50:16,220 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:16,221 INFO  L495      AbstractCegarLoop]: Abstraction has 8308 states and 13850 transitions.
[2023-11-29 02:50:16,221 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:16,221 INFO  L276                IsEmpty]: Start isEmpty. Operand 8308 states and 13850 transitions.
[2023-11-29 02:50:16,236 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 740
[2023-11-29 02:50:16,237 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:16,237 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:50:16,237 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 02:50:16,238 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:16,238 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:16,239 INFO  L85        PathProgramCache]: Analyzing trace with hash 648558459, now seen corresponding path program 1 times
[2023-11-29 02:50:16,239 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:16,239 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133296644]
[2023-11-29 02:50:16,239 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:16,240 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:16,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:17,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:50:17,735 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:17,735 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133296644]
[2023-11-29 02:50:17,735 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133296644] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:17,736 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:17,736 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:50:17,736 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209614690]
[2023-11-29 02:50:17,736 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:17,739 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:50:17,739 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:17,741 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:50:17,741 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:17,742 INFO  L87              Difference]: Start difference. First operand 8308 states and 13850 transitions. Second operand  has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:18,129 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:18,130 INFO  L93              Difference]: Finished difference Result 16429 states and 27388 transitions.
[2023-11-29 02:50:18,130 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:50:18,131 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 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 739
[2023-11-29 02:50:18,133 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:18,177 INFO  L225             Difference]: With dead ends: 16429
[2023-11-29 02:50:18,178 INFO  L226             Difference]: Without dead ends: 8311
[2023-11-29 02:50:18,188 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:18,190 INFO  L413           NwaCegarLoop]: 13845 mSDtfsCounter, 1 mSDsluCounter, 27683 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41528 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:18,190 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41528 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:18,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8311 states.
[2023-11-29 02:50:18,353 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 8310.
[2023-11-29 02:50:18,365 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8310 states, 8309 states have (on average 1.6671079552292694) internal successors, (13852), 8309 states have internal predecessors, (13852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:18,388 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8310 states to 8310 states and 13852 transitions.
[2023-11-29 02:50:18,388 INFO  L78                 Accepts]: Start accepts. Automaton has 8310 states and 13852 transitions. Word has length 739
[2023-11-29 02:50:18,389 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:18,389 INFO  L495      AbstractCegarLoop]: Abstraction has 8310 states and 13852 transitions.
[2023-11-29 02:50:18,390 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:18,390 INFO  L276                IsEmpty]: Start isEmpty. Operand 8310 states and 13852 transitions.
[2023-11-29 02:50:18,397 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 741
[2023-11-29 02:50:18,398 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:18,398 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:50:18,399 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 02:50:18,399 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:18,399 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:18,400 INFO  L85        PathProgramCache]: Analyzing trace with hash 195055049, now seen corresponding path program 1 times
[2023-11-29 02:50:18,400 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:18,400 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371981378]
[2023-11-29 02:50:18,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:18,401 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:18,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:20,001 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:50:20,001 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:20,002 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371981378]
[2023-11-29 02:50:20,002 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371981378] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:20,002 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:20,002 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:50:20,003 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168264864]
[2023-11-29 02:50:20,003 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:20,004 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:50:20,005 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:20,006 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:50:20,007 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:20,007 INFO  L87              Difference]: Start difference. First operand 8310 states and 13852 transitions. Second operand  has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:20,646 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:20,646 INFO  L93              Difference]: Finished difference Result 24544 states and 40915 transitions.
[2023-11-29 02:50:20,647 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 02:50:20,647 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 740
[2023-11-29 02:50:20,649 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:20,712 INFO  L225             Difference]: With dead ends: 24544
[2023-11-29 02:50:20,712 INFO  L226             Difference]: Without dead ends: 16424
[2023-11-29 02:50:20,725 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:50:20,727 INFO  L413           NwaCegarLoop]: 15355 mSDtfsCounter, 13523 mSDsluCounter, 29191 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13523 SdHoareTripleChecker+Valid, 44546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:20,727 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13523 Valid, 44546 Invalid, 19 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:20,757 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16424 states.
[2023-11-29 02:50:20,969 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16424 to 8312.
[2023-11-29 02:50:20,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8312 states, 8311 states have (on average 1.6669474190831428) internal successors, (13854), 8311 states have internal predecessors, (13854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:21,001 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8312 states to 8312 states and 13854 transitions.
[2023-11-29 02:50:21,002 INFO  L78                 Accepts]: Start accepts. Automaton has 8312 states and 13854 transitions. Word has length 740
[2023-11-29 02:50:21,003 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:21,003 INFO  L495      AbstractCegarLoop]: Abstraction has 8312 states and 13854 transitions.
[2023-11-29 02:50:21,004 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:21,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 8312 states and 13854 transitions.
[2023-11-29 02:50:21,016 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 742
[2023-11-29 02:50:21,016 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:21,017 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:50:21,017 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 02:50:21,018 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:21,018 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:21,019 INFO  L85        PathProgramCache]: Analyzing trace with hash 1641037091, now seen corresponding path program 1 times
[2023-11-29 02:50:21,019 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:21,019 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346280368]
[2023-11-29 02:50:21,020 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:21,020 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:21,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:22,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:50:22,674 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:22,674 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346280368]
[2023-11-29 02:50:22,675 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346280368] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:22,675 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:22,675 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:50:22,675 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073462285]
[2023-11-29 02:50:22,675 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:22,677 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:50:22,677 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:22,679 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:50:22,679 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:22,679 INFO  L87              Difference]: Start difference. First operand 8312 states and 13854 transitions. Second operand  has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:23,062 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:23,062 INFO  L93              Difference]: Finished difference Result 24547 states and 40916 transitions.
[2023-11-29 02:50:23,062 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 02:50:23,063 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 0 states have call successors, (0), 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 741
[2023-11-29 02:50:23,065 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:23,088 INFO  L225             Difference]: With dead ends: 24547
[2023-11-29 02:50:23,088 INFO  L226             Difference]: Without dead ends: 16425
[2023-11-29 02:50:23,097 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:50:23,099 INFO  L413           NwaCegarLoop]: 15350 mSDtfsCounter, 13520 mSDsluCounter, 29186 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13520 SdHoareTripleChecker+Valid, 44536 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:23,100 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13520 Valid, 44536 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:23,119 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16425 states.
[2023-11-29 02:50:23,256 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16425 to 8314.
[2023-11-29 02:50:23,269 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8314 states, 8313 states have (on average 1.6667869601828462) internal successors, (13856), 8313 states have internal predecessors, (13856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:23,284 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8314 states to 8314 states and 13856 transitions.
[2023-11-29 02:50:23,284 INFO  L78                 Accepts]: Start accepts. Automaton has 8314 states and 13856 transitions. Word has length 741
[2023-11-29 02:50:23,285 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:23,285 INFO  L495      AbstractCegarLoop]: Abstraction has 8314 states and 13856 transitions.
[2023-11-29 02:50:23,286 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:23,286 INFO  L276                IsEmpty]: Start isEmpty. Operand 8314 states and 13856 transitions.
[2023-11-29 02:50:23,294 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 743
[2023-11-29 02:50:23,294 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:23,295 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:50:23,295 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 02:50:23,295 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:23,295 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:23,296 INFO  L85        PathProgramCache]: Analyzing trace with hash -866256477, now seen corresponding path program 1 times
[2023-11-29 02:50:23,296 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:23,296 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461927826]
[2023-11-29 02:50:23,296 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:23,297 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:23,586 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:24,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:50:24,674 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:24,674 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461927826]
[2023-11-29 02:50:24,675 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461927826] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:24,675 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:24,675 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:50:24,675 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732764657]
[2023-11-29 02:50:24,676 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:24,677 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:50:24,677 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:24,679 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:50:24,679 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:50:24,680 INFO  L87              Difference]: Start difference. First operand 8314 states and 13856 transitions. Second operand  has 5 states, 5 states have (on average 148.4) internal successors, (742), 4 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:25,316 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:25,316 INFO  L93              Difference]: Finished difference Result 25464 states and 42439 transitions.
[2023-11-29 02:50:25,316 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:50:25,317 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 148.4) internal successors, (742), 4 states have internal predecessors, (742), 0 states have call successors, (0), 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 742
[2023-11-29 02:50:25,319 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:25,348 INFO  L225             Difference]: With dead ends: 25464
[2023-11-29 02:50:25,348 INFO  L226             Difference]: Without dead ends: 17340
[2023-11-29 02:50:25,361 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:50:25,362 INFO  L413           NwaCegarLoop]: 15354 mSDtfsCounter, 55197 mSDsluCounter, 27684 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55197 SdHoareTripleChecker+Valid, 43038 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:25,363 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [55197 Valid, 43038 Invalid, 16 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:25,387 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17340 states.
[2023-11-29 02:50:25,582 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17340 to 9220.
[2023-11-29 02:50:25,594 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9220 states, 9219 states have (on average 1.6667751383013343) internal successors, (15366), 9219 states have internal predecessors, (15366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:25,614 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9220 states to 9220 states and 15366 transitions.
[2023-11-29 02:50:25,615 INFO  L78                 Accepts]: Start accepts. Automaton has 9220 states and 15366 transitions. Word has length 742
[2023-11-29 02:50:25,616 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:25,616 INFO  L495      AbstractCegarLoop]: Abstraction has 9220 states and 15366 transitions.
[2023-11-29 02:50:25,617 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 148.4) internal successors, (742), 4 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:25,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 9220 states and 15366 transitions.
[2023-11-29 02:50:26,010 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6106
[2023-11-29 02:50:26,010 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:26,014 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 02:50:26,014 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 02:50:26,014 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:26,015 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:26,017 INFO  L85        PathProgramCache]: Analyzing trace with hash 249534, now seen corresponding path program 1 times
[2023-11-29 02:50:26,017 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:26,017 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712697922]
[2023-11-29 02:50:26,018 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:26,018 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:27,232 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:27,232 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369878706]
[2023-11-29 02:50:27,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:27,233 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:27,234 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:27,235 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:27,238 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 02:50:34,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:34,759 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28853 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:50:34,969 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:35,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:50:35,324 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:35,325 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:35,325 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712697922]
[2023-11-29 02:50:35,325 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:35,325 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369878706]
[2023-11-29 02:50:35,325 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369878706] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:35,326 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:35,327 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:50:35,328 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959189463]
[2023-11-29 02:50:35,328 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:35,338 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:50:35,339 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:35,347 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:50:35,348 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:35,350 INFO  L87              Difference]: Start difference. First operand 9220 states and 15366 transitions. Second operand  has 4 states, 4 states have (on average 1526.25) internal successors, (6105), 4 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:35,639 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:35,639 INFO  L93              Difference]: Finished difference Result 17354 states and 28922 transitions.
[2023-11-29 02:50:35,639 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:50:35,641 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1526.25) internal successors, (6105), 4 states have internal predecessors, (6105), 0 states have call successors, (0), 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 6105
[2023-11-29 02:50:35,645 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:35,659 INFO  L225             Difference]: With dead ends: 17354
[2023-11-29 02:50:35,659 INFO  L226             Difference]: Without dead ends: 9230
[2023-11-29 02:50:35,668 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6104 GetRequests, 6102 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:35,669 INFO  L413           NwaCegarLoop]: 13845 mSDtfsCounter, 12 mSDsluCounter, 27680 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 41525 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:35,669 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 41525 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:35,684 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9230 states.
[2023-11-29 02:50:35,793 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9230 to 9222.
[2023-11-29 02:50:35,803 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9222 states, 9221 states have (on average 1.6666305172974731) internal successors, (15368), 9221 states have internal predecessors, (15368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:35,816 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9222 states to 9222 states and 15368 transitions.
[2023-11-29 02:50:35,817 INFO  L78                 Accepts]: Start accepts. Automaton has 9222 states and 15368 transitions. Word has length 6105
[2023-11-29 02:50:35,820 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:35,821 INFO  L495      AbstractCegarLoop]: Abstraction has 9222 states and 15368 transitions.
[2023-11-29 02:50:35,822 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1526.25) internal successors, (6105), 4 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:35,823 INFO  L276                IsEmpty]: Start isEmpty. Operand 9222 states and 15368 transitions.
[2023-11-29 02:50:36,180 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6106
[2023-11-29 02:50:36,180 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:36,183 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:50:36,253 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 02:50:36,384 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-29 02:50:36,384 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:36,386 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:36,388 INFO  L85        PathProgramCache]: Analyzing trace with hash -978834128, now seen corresponding path program 1 times
[2023-11-29 02:50:36,388 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:36,388 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721286999]
[2023-11-29 02:50:36,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:36,389 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:37,057 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:37,058 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876820800]
[2023-11-29 02:50:37,059 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:37,060 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:37,060 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:37,061 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:37,062 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 02:50:44,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:44,374 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28854 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:50:44,507 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:44,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:50:44,691 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:44,691 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:44,691 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721286999]
[2023-11-29 02:50:44,691 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:44,691 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876820800]
[2023-11-29 02:50:44,691 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876820800] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:44,692 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:44,693 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:50:44,694 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039255875]
[2023-11-29 02:50:44,694 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:44,698 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:50:44,699 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:44,703 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:50:44,703 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:44,705 INFO  L87              Difference]: Start difference. First operand 9222 states and 15368 transitions. Second operand  has 4 states, 4 states have (on average 1526.25) internal successors, (6105), 4 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:44,952 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:44,952 INFO  L93              Difference]: Finished difference Result 17357 states and 28924 transitions.
[2023-11-29 02:50:44,953 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:50:44,954 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1526.25) internal successors, (6105), 4 states have internal predecessors, (6105), 0 states have call successors, (0), 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 6105
[2023-11-29 02:50:44,965 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:44,980 INFO  L225             Difference]: With dead ends: 17357
[2023-11-29 02:50:44,981 INFO  L226             Difference]: Without dead ends: 9231
[2023-11-29 02:50:44,990 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6104 GetRequests, 6102 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:44,990 INFO  L413           NwaCegarLoop]: 13845 mSDtfsCounter, 12 mSDsluCounter, 27680 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 41525 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:44,991 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 41525 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:45,007 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9231 states.
[2023-11-29 02:50:45,125 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9231 to 9223.
[2023-11-29 02:50:45,135 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9223 states, 9222 states have (on average 1.666558230318803) internal successors, (15369), 9222 states have internal predecessors, (15369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:45,148 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9223 states to 9223 states and 15369 transitions.
[2023-11-29 02:50:45,149 INFO  L78                 Accepts]: Start accepts. Automaton has 9223 states and 15369 transitions. Word has length 6105
[2023-11-29 02:50:45,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:45,153 INFO  L495      AbstractCegarLoop]: Abstraction has 9223 states and 15369 transitions.
[2023-11-29 02:50:45,156 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1526.25) internal successors, (6105), 4 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:45,156 INFO  L276                IsEmpty]: Start isEmpty. Operand 9223 states and 15369 transitions.
[2023-11-29 02:50:45,418 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6106
[2023-11-29 02:50:45,418 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:45,422 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]
[2023-11-29 02:50:45,501 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 02:50:45,623 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-29 02:50:45,623 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:45,624 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:45,626 INFO  L85        PathProgramCache]: Analyzing trace with hash -938415070, now seen corresponding path program 1 times
[2023-11-29 02:50:45,627 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:45,627 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443899332]
[2023-11-29 02:50:45,628 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:45,628 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:46,327 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:46,327 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425822995]
[2023-11-29 02:50:46,328 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:46,329 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:46,329 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:46,330 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:46,332 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 02:50:53,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:53,329 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28855 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:50:53,402 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:53,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:50:53,548 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:53,548 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:53,548 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443899332]
[2023-11-29 02:50:53,548 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:53,548 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425822995]
[2023-11-29 02:50:53,548 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425822995] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:53,548 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:53,550 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:50:53,550 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612135222]
[2023-11-29 02:50:53,550 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:53,555 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:50:53,555 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:53,560 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:50:53,560 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:53,561 INFO  L87              Difference]: Start difference. First operand 9223 states and 15369 transitions. Second operand  has 4 states, 4 states have (on average 1526.25) internal successors, (6105), 4 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:53,760 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:53,760 INFO  L93              Difference]: Finished difference Result 17359 states and 28926 transitions.
[2023-11-29 02:50:53,761 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:50:53,762 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1526.25) internal successors, (6105), 4 states have internal predecessors, (6105), 0 states have call successors, (0), 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 6105
[2023-11-29 02:50:53,767 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:53,775 INFO  L225             Difference]: With dead ends: 17359
[2023-11-29 02:50:53,776 INFO  L226             Difference]: Without dead ends: 9232
[2023-11-29 02:50:53,782 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6104 GetRequests, 6102 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:50:53,783 INFO  L413           NwaCegarLoop]: 13845 mSDtfsCounter, 12 mSDsluCounter, 27680 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 41525 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:53,783 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 41525 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:53,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9232 states.
[2023-11-29 02:50:53,985 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9232 to 9224.
[2023-11-29 02:50:53,995 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9224 states, 9223 states have (on average 1.6664859590155048) internal successors, (15370), 9223 states have internal predecessors, (15370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:54,008 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 15370 transitions.
[2023-11-29 02:50:54,009 INFO  L78                 Accepts]: Start accepts. Automaton has 9224 states and 15370 transitions. Word has length 6105
[2023-11-29 02:50:54,013 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:54,014 INFO  L495      AbstractCegarLoop]: Abstraction has 9224 states and 15370 transitions.
[2023-11-29 02:50:54,015 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1526.25) internal successors, (6105), 4 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:54,015 INFO  L276                IsEmpty]: Start isEmpty. Operand 9224 states and 15370 transitions.
[2023-11-29 02:50:54,179 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6106
[2023-11-29 02:50:54,179 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:54,183 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:50:54,248 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-29 02:50:54,383 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:54,384 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:54,384 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:54,386 INFO  L85        PathProgramCache]: Analyzing trace with hash 368772628, now seen corresponding path program 1 times
[2023-11-29 02:50:54,386 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:54,386 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016819074]
[2023-11-29 02:50:54,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:54,387 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:55,044 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:55,044 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143646442]
[2023-11-29 02:50:55,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:55,046 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:55,046 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:55,047 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:55,048 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 02:51:01,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:02,121 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28856 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 02:51:02,207 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:02,346 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:51:02,346 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:51:02,346 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:02,346 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016819074]
[2023-11-29 02:51:02,346 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:02,346 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143646442]
[2023-11-29 02:51:02,347 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143646442] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:51:02,347 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:51:02,348 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 02:51:02,349 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543375295]
[2023-11-29 02:51:02,349 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:02,356 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:51:02,356 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:02,360 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:51:02,360 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:51:02,362 INFO  L87              Difference]: Start difference. First operand 9224 states and 15370 transitions. Second operand  has 5 states, 5 states have (on average 1221.0) internal successors, (6105), 5 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:02,764 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:51:02,764 INFO  L93              Difference]: Finished difference Result 25490 states and 42472 transitions.
[2023-11-29 02:51:02,764 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:51:02,766 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1221.0) internal successors, (6105), 5 states have internal predecessors, (6105), 0 states have call successors, (0), 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 6105
[2023-11-29 02:51:02,768 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:51:02,784 INFO  L225             Difference]: With dead ends: 25490
[2023-11-29 02:51:02,784 INFO  L226             Difference]: Without dead ends: 17362
[2023-11-29 02:51:02,791 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6107 GetRequests, 6102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:51:02,792 INFO  L413           NwaCegarLoop]: 19074 mSDtfsCounter, 13543 mSDsluCounter, 51975 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13543 SdHoareTripleChecker+Valid, 71049 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:51:02,792 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13543 Valid, 71049 Invalid, 36 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:51:02,807 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17362 states.
[2023-11-29 02:51:02,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17362 to 9226.
[2023-11-29 02:51:02,909 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9226 states, 9225 states have (on average 1.666341463414634) internal successors, (15372), 9225 states have internal predecessors, (15372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:02,919 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9226 states to 9226 states and 15372 transitions.
[2023-11-29 02:51:02,919 INFO  L78                 Accepts]: Start accepts. Automaton has 9226 states and 15372 transitions. Word has length 6105
[2023-11-29 02:51:02,921 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:51:02,921 INFO  L495      AbstractCegarLoop]: Abstraction has 9226 states and 15372 transitions.
[2023-11-29 02:51:02,923 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1221.0) internal successors, (6105), 5 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:02,923 INFO  L276                IsEmpty]: Start isEmpty. Operand 9226 states and 15372 transitions.
[2023-11-29 02:51:03,200 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6106
[2023-11-29 02:51:03,200 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:51:03,203 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:51:03,271 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-29 02:51:03,403 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:03,404 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:03,405 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:03,407 INFO  L85        PathProgramCache]: Analyzing trace with hash -358667118, now seen corresponding path program 1 times
[2023-11-29 02:51:03,407 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:03,407 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650303205]
[2023-11-29 02:51:03,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:03,408 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:04,035 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:04,035 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716962418]
[2023-11-29 02:51:04,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:04,036 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:04,037 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:04,037 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:04,038 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 02:51:10,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:10,739 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28856 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:51:10,854 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:13,394 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 8 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:51:13,394 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:51:13,531 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked.
[2023-11-29 02:51:13,531 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:13,531 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650303205]
[2023-11-29 02:51:13,531 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:13,531 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716962418]
[2023-11-29 02:51:13,531 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [716962418] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:51:13,531 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:51:13,534 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:51:13,534 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064410245]
[2023-11-29 02:51:13,534 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:13,539 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:51:13,539 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:13,543 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:51:13,543 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:51:13,544 INFO  L87              Difference]: Start difference. First operand 9226 states and 15372 transitions. Second operand  has 5 states, 5 states have (on average 1101.2) internal successors, (5506), 5 states have internal predecessors, (5506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:23,950 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:51:23,950 INFO  L93              Difference]: Finished difference Result 32874 states and 54533 transitions.
[2023-11-29 02:51:23,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:51:23,951 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1101.2) internal successors, (5506), 5 states have internal predecessors, (5506), 0 states have call successors, (0), 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 6105
[2023-11-29 02:51:23,957 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:51:23,969 INFO  L225             Difference]: With dead ends: 32874
[2023-11-29 02:51:23,969 INFO  L226             Difference]: Without dead ends: 17346
[2023-11-29 02:51:23,976 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12209 GetRequests, 12200 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:51:23,977 INFO  L413           NwaCegarLoop]: 23013 mSDtfsCounter, 36169 mSDsluCounter, 22058 mSDsCounter, 0 mSdLazyCounter, 10801 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36169 SdHoareTripleChecker+Valid, 45071 SdHoareTripleChecker+Invalid, 11532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time
[2023-11-29 02:51:23,977 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36169 Valid, 45071 Invalid, 11532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10801 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time]
[2023-11-29 02:51:23,991 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17346 states.
[2023-11-29 02:51:24,076 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17346 to 9228.
[2023-11-29 02:51:24,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9228 states, 9227 states have (on average 1.666197030454102) internal successors, (15374), 9227 states have internal predecessors, (15374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:24,093 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9228 states to 9228 states and 15374 transitions.
[2023-11-29 02:51:24,093 INFO  L78                 Accepts]: Start accepts. Automaton has 9228 states and 15374 transitions. Word has length 6105
[2023-11-29 02:51:24,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:51:24,097 INFO  L495      AbstractCegarLoop]: Abstraction has 9228 states and 15374 transitions.
[2023-11-29 02:51:24,098 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1101.2) internal successors, (5506), 5 states have internal predecessors, (5506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:24,099 INFO  L276                IsEmpty]: Start isEmpty. Operand 9228 states and 15374 transitions.
[2023-11-29 02:51:24,256 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6107
[2023-11-29 02:51:24,256 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:51:24,259 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 02:51:24,327 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 02:51:24,459 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 02:51:24,460 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:24,460 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:24,462 INFO  L85        PathProgramCache]: Analyzing trace with hash 1306212666, now seen corresponding path program 1 times
[2023-11-29 02:51:24,462 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:24,462 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857556596]
[2023-11-29 02:51:24,463 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:24,463 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:25,078 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:25,078 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157291537]
[2023-11-29 02:51:25,079 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:25,079 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:25,079 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:25,080 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:25,082 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 02:51:31,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:32,045 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28859 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:51:32,130 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:34,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 10 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:51:34,670 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:51:34,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked.
[2023-11-29 02:51:34,799 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:34,799 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857556596]
[2023-11-29 02:51:34,799 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:34,799 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157291537]
[2023-11-29 02:51:34,799 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [157291537] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:51:34,799 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:51:34,803 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:51:34,803 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208385123]
[2023-11-29 02:51:34,803 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:34,809 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:51:34,809 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:34,813 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:51:34,813 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:51:34,814 INFO  L87              Difference]: Start difference. First operand 9228 states and 15374 transitions. Second operand  has 5 states, 5 states have (on average 1101.8) internal successors, (5509), 5 states have internal predecessors, (5509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:46,536 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:51:46,537 INFO  L93              Difference]: Finished difference Result 32882 states and 54541 transitions.
[2023-11-29 02:51:46,537 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:51:46,538 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1101.8) internal successors, (5509), 5 states have internal predecessors, (5509), 0 states have call successors, (0), 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 6106
[2023-11-29 02:51:46,543 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:51:46,556 INFO  L225             Difference]: With dead ends: 32882
[2023-11-29 02:51:46,557 INFO  L226             Difference]: Without dead ends: 17347
[2023-11-29 02:51:46,566 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12211 GetRequests, 12202 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:51:46,567 INFO  L413           NwaCegarLoop]: 23005 mSDtfsCounter, 24836 mSDsluCounter, 33380 mSDsCounter, 0 mSdLazyCounter, 14817 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24836 SdHoareTripleChecker+Valid, 56385 SdHoareTripleChecker+Invalid, 15548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 14817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:51:46,567 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24836 Valid, 56385 Invalid, 15548 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 14817 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time]
[2023-11-29 02:51:46,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17347 states.
[2023-11-29 02:51:46,710 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17347 to 9230.
[2023-11-29 02:51:46,719 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9230 states, 9229 states have (on average 1.6660526600931844) internal successors, (15376), 9229 states have internal predecessors, (15376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:46,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 15376 transitions.
[2023-11-29 02:51:46,730 INFO  L78                 Accepts]: Start accepts. Automaton has 9230 states and 15376 transitions. Word has length 6106
[2023-11-29 02:51:46,734 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:51:46,734 INFO  L495      AbstractCegarLoop]: Abstraction has 9230 states and 15376 transitions.
[2023-11-29 02:51:46,735 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1101.8) internal successors, (5509), 5 states have internal predecessors, (5509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:46,735 INFO  L276                IsEmpty]: Start isEmpty. Operand 9230 states and 15376 transitions.
[2023-11-29 02:51:46,889 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6108
[2023-11-29 02:51:46,889 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:51:46,892 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:51:46,972 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 02:51:47,093 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:47,093 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:47,093 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:47,096 INFO  L85        PathProgramCache]: Analyzing trace with hash 467986990, now seen corresponding path program 1 times
[2023-11-29 02:51:47,096 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:47,096 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842642533]
[2023-11-29 02:51:47,097 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:47,097 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:47,769 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:47,769 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19170123]
[2023-11-29 02:51:47,771 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:47,771 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:47,771 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:47,772 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:47,772 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 02:51:54,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:54,803 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28863 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:51:54,899 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:57,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 12 proven. 598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:51:57,522 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:51:57,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked.
[2023-11-29 02:51:57,649 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:57,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842642533]
[2023-11-29 02:51:57,649 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:57,650 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19170123]
[2023-11-29 02:51:57,650 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [19170123] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:51:57,650 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:51:57,652 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:51:57,652 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688398154]
[2023-11-29 02:51:57,652 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:57,656 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:51:57,657 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:57,660 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:51:57,660 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:51:57,661 INFO  L87              Difference]: Start difference. First operand 9230 states and 15376 transitions. Second operand  has 5 states, 5 states have (on average 1102.4) internal successors, (5512), 5 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:09,557 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:52:09,557 INFO  L93              Difference]: Finished difference Result 32890 states and 54549 transitions.
[2023-11-29 02:52:09,558 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:52:09,559 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1102.4) internal successors, (5512), 5 states have internal predecessors, (5512), 0 states have call successors, (0), 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 6107
[2023-11-29 02:52:09,564 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:52:09,575 INFO  L225             Difference]: With dead ends: 32890
[2023-11-29 02:52:09,575 INFO  L226             Difference]: Without dead ends: 17348
[2023-11-29 02:52:09,582 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12213 GetRequests, 12204 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:52:09,582 INFO  L413           NwaCegarLoop]: 22997 mSDtfsCounter, 24830 mSDsluCounter, 33370 mSDsCounter, 0 mSdLazyCounter, 14817 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24830 SdHoareTripleChecker+Valid, 56367 SdHoareTripleChecker+Invalid, 15548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 14817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:52:09,582 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24830 Valid, 56367 Invalid, 15548 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 14817 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time]
[2023-11-29 02:52:09,595 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17348 states.
[2023-11-29 02:52:09,675 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17348 to 9232.
[2023-11-29 02:52:09,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9232 states, 9231 states have (on average 1.6659083522911928) internal successors, (15378), 9231 states have internal predecessors, (15378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:09,691 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9232 states to 9232 states and 15378 transitions.
[2023-11-29 02:52:09,691 INFO  L78                 Accepts]: Start accepts. Automaton has 9232 states and 15378 transitions. Word has length 6107
[2023-11-29 02:52:09,694 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:52:09,694 INFO  L495      AbstractCegarLoop]: Abstraction has 9232 states and 15378 transitions.
[2023-11-29 02:52:09,695 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1102.4) internal successors, (5512), 5 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:09,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 9232 states and 15378 transitions.
[2023-11-29 02:52:09,847 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6109
[2023-11-29 02:52:09,847 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:52:09,849 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, 2, 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]
[2023-11-29 02:52:09,935 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 02:52:10,050 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 02:52:10,050 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:52:10,051 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:52:10,053 INFO  L85        PathProgramCache]: Analyzing trace with hash -185337950, now seen corresponding path program 1 times
[2023-11-29 02:52:10,053 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:52:10,053 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874896056]
[2023-11-29 02:52:10,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:10,053 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:52:10,659 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:52:10,659 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552341512]
[2023-11-29 02:52:10,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:10,660 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:10,660 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:52:10,661 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:52:10,662 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 02:52:17,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:52:17,874 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28866 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:52:17,967 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:52:20,601 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 14 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:52:20,601 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:52:20,787 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked.
[2023-11-29 02:52:20,787 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:52:20,787 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874896056]
[2023-11-29 02:52:20,787 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:52:20,787 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552341512]
[2023-11-29 02:52:20,787 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552341512] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:52:20,787 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:52:20,791 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 02:52:20,791 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051310006]
[2023-11-29 02:52:20,791 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:52:20,795 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:52:20,796 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:52:20,799 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:52:20,800 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2023-11-29 02:52:20,801 INFO  L87              Difference]: Start difference. First operand 9232 states and 15378 transitions. Second operand  has 6 states, 6 states have (on average 919.1666666666666) internal successors, (5515), 6 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:40,590 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:52:40,590 INFO  L93              Difference]: Finished difference Result 41043 states and 68124 transitions.
[2023-11-29 02:52:40,590 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 02:52:40,592 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 919.1666666666666) internal successors, (5515), 6 states have internal predecessors, (5515), 0 states have call successors, (0), 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 6108
[2023-11-29 02:52:40,596 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:52:40,616 INFO  L225             Difference]: With dead ends: 41043
[2023-11-29 02:52:40,616 INFO  L226             Difference]: Without dead ends: 25494
[2023-11-29 02:52:40,624 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12216 GetRequests, 12204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:52:40,625 INFO  L413           NwaCegarLoop]: 22991 mSDtfsCounter, 60982 mSDsluCounter, 54553 mSDsCounter, 0 mSdLazyCounter, 22876 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60982 SdHoareTripleChecker+Valid, 77544 SdHoareTripleChecker+Invalid, 23610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 22876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time
[2023-11-29 02:52:40,625 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [60982 Valid, 77544 Invalid, 23610 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [734 Valid, 22876 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time]
[2023-11-29 02:52:40,646 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25494 states.
[2023-11-29 02:52:40,766 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25494 to 9234.
[2023-11-29 02:52:40,775 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9234 states, 9233 states have (on average 1.6657641070074731) internal successors, (15380), 9233 states have internal predecessors, (15380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:40,786 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9234 states to 9234 states and 15380 transitions.
[2023-11-29 02:52:40,787 INFO  L78                 Accepts]: Start accepts. Automaton has 9234 states and 15380 transitions. Word has length 6108
[2023-11-29 02:52:40,790 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:52:40,790 INFO  L495      AbstractCegarLoop]: Abstraction has 9234 states and 15380 transitions.
[2023-11-29 02:52:40,792 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 919.1666666666666) internal successors, (5515), 6 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:40,792 INFO  L276                IsEmpty]: Start isEmpty. Operand 9234 states and 15380 transitions.
[2023-11-29 02:52:40,955 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6110
[2023-11-29 02:52:40,955 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:52:40,958 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:52:41,040 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 02:52:41,158 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 02:52:41,159 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:52:41,159 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:52:41,162 INFO  L85        PathProgramCache]: Analyzing trace with hash -776453560, now seen corresponding path program 1 times
[2023-11-29 02:52:41,162 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:52:41,162 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641429528]
[2023-11-29 02:52:41,163 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:41,163 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:52:41,849 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:52:41,849 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030599630]
[2023-11-29 02:52:41,850 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:41,850 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:41,850 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:52:41,851 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:52:41,852 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 02:52:48,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:52:48,970 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28869 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:52:49,064 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:52:51,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 16 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:52:51,767 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:52:51,904 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked.
[2023-11-29 02:52:51,904 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:52:51,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641429528]
[2023-11-29 02:52:51,904 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:52:51,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030599630]
[2023-11-29 02:52:51,904 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030599630] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:52:51,904 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:52:51,908 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:52:51,908 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975595339]
[2023-11-29 02:52:51,908 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:52:51,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:52:51,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:52:51,918 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:52:51,918 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:52:51,920 INFO  L87              Difference]: Start difference. First operand 9234 states and 15380 transitions. Second operand  has 5 states, 5 states have (on average 1103.6) internal successors, (5518), 5 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:03,961 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:03,961 INFO  L93              Difference]: Finished difference Result 32906 states and 54565 transitions.
[2023-11-29 02:53:03,961 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:53:03,963 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1103.6) internal successors, (5518), 5 states have internal predecessors, (5518), 0 states have call successors, (0), 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 6109
[2023-11-29 02:53:03,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:03,978 INFO  L225             Difference]: With dead ends: 32906
[2023-11-29 02:53:03,978 INFO  L226             Difference]: Without dead ends: 17350
[2023-11-29 02:53:03,983 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12217 GetRequests, 12208 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:53:03,983 INFO  L413           NwaCegarLoop]: 22981 mSDtfsCounter, 24818 mSDsluCounter, 33350 mSDsCounter, 0 mSdLazyCounter, 14817 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24818 SdHoareTripleChecker+Valid, 56331 SdHoareTripleChecker+Invalid, 15548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 14817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:03,984 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24818 Valid, 56331 Invalid, 15548 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 14817 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time]
[2023-11-29 02:53:03,996 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17350 states.
[2023-11-29 02:53:04,076 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17350 to 9236.
[2023-11-29 02:53:04,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9236 states, 9235 states have (on average 1.6656199242014076) internal successors, (15382), 9235 states have internal predecessors, (15382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:04,093 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 15382 transitions.
[2023-11-29 02:53:04,093 INFO  L78                 Accepts]: Start accepts. Automaton has 9236 states and 15382 transitions. Word has length 6109
[2023-11-29 02:53:04,096 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:04,096 INFO  L495      AbstractCegarLoop]: Abstraction has 9236 states and 15382 transitions.
[2023-11-29 02:53:04,097 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1103.6) internal successors, (5518), 5 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:04,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 9236 states and 15382 transitions.
[2023-11-29 02:53:04,249 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6111
[2023-11-29 02:53:04,249 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:53:04,252 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:53:04,323 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 02:53:04,452 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 02:53:04,453 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:53:04,453 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:53:04,455 INFO  L85        PathProgramCache]: Analyzing trace with hash -184220536, now seen corresponding path program 1 times
[2023-11-29 02:53:04,455 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:53:04,455 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63311938]
[2023-11-29 02:53:04,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:04,456 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:53:05,151 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:53:05,152 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601212090]
[2023-11-29 02:53:05,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:05,153 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:05,153 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:53:05,154 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:53:05,156 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 02:53:12,042 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:12,218 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28872 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:53:12,313 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:53:14,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 18 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:53:14,718 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:53:14,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked.
[2023-11-29 02:53:14,869 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:53:14,869 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63311938]
[2023-11-29 02:53:14,869 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:53:14,869 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601212090]
[2023-11-29 02:53:14,869 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601212090] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:53:14,870 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:53:14,872 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:53:14,872 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266882742]
[2023-11-29 02:53:14,872 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:53:14,876 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:53:14,876 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:53:14,880 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:53:14,880 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:53:14,882 INFO  L87              Difference]: Start difference. First operand 9236 states and 15382 transitions. Second operand  has 5 states, 5 states have (on average 1104.2) internal successors, (5521), 5 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:26,998 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:26,998 INFO  L93              Difference]: Finished difference Result 32914 states and 54573 transitions.
[2023-11-29 02:53:26,998 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:53:27,000 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1104.2) internal successors, (5521), 5 states have internal predecessors, (5521), 0 states have call successors, (0), 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 6110
[2023-11-29 02:53:27,006 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:27,020 INFO  L225             Difference]: With dead ends: 32914
[2023-11-29 02:53:27,020 INFO  L226             Difference]: Without dead ends: 17351
[2023-11-29 02:53:27,028 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12219 GetRequests, 12210 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:53:27,029 INFO  L413           NwaCegarLoop]: 22973 mSDtfsCounter, 24812 mSDsluCounter, 33340 mSDsCounter, 0 mSdLazyCounter, 14817 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24812 SdHoareTripleChecker+Valid, 56313 SdHoareTripleChecker+Invalid, 15548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 14817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:27,029 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24812 Valid, 56313 Invalid, 15548 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 14817 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time]
[2023-11-29 02:53:27,045 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17351 states.
[2023-11-29 02:53:27,126 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17351 to 9238.
[2023-11-29 02:53:27,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9238 states, 9237 states have (on average 1.6654758038324131) internal successors, (15384), 9237 states have internal predecessors, (15384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:27,142 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9238 states to 9238 states and 15384 transitions.
[2023-11-29 02:53:27,142 INFO  L78                 Accepts]: Start accepts. Automaton has 9238 states and 15384 transitions. Word has length 6110
[2023-11-29 02:53:27,145 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:27,145 INFO  L495      AbstractCegarLoop]: Abstraction has 9238 states and 15384 transitions.
[2023-11-29 02:53:27,146 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1104.2) internal successors, (5521), 5 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:27,146 INFO  L276                IsEmpty]: Start isEmpty. Operand 9238 states and 15384 transitions.
[2023-11-29 02:53:27,413 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6112
[2023-11-29 02:53:27,413 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:53:27,414 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:53:27,497 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 02:53:27,615 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 02:53:27,615 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:53:27,616 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:53:27,617 INFO  L85        PathProgramCache]: Analyzing trace with hash 1341171940, now seen corresponding path program 1 times
[2023-11-29 02:53:27,617 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:53:27,617 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972967141]
[2023-11-29 02:53:27,618 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:27,618 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:53:28,252 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:53:28,252 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551809931]
[2023-11-29 02:53:28,253 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:28,253 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:28,253 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:53:28,254 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:53:28,255 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 02:53:35,054 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:35,237 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28876 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:53:35,318 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:53:37,934 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 20 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:53:37,935 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:53:38,078 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked.
[2023-11-29 02:53:38,078 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:53:38,078 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972967141]
[2023-11-29 02:53:38,078 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:53:38,078 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551809931]
[2023-11-29 02:53:38,078 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [551809931] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:53:38,078 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:53:38,082 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:53:38,082 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300151008]
[2023-11-29 02:53:38,082 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:53:38,085 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:53:38,085 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:53:38,088 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:53:38,088 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:53:38,090 INFO  L87              Difference]: Start difference. First operand 9238 states and 15384 transitions. Second operand  has 5 states, 5 states have (on average 1104.8) internal successors, (5524), 5 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:49,029 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:49,029 INFO  L93              Difference]: Finished difference Result 32922 states and 54581 transitions.
[2023-11-29 02:53:49,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:53:49,031 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1104.8) internal successors, (5524), 5 states have internal predecessors, (5524), 0 states have call successors, (0), 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 6111
[2023-11-29 02:53:49,035 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:49,049 INFO  L225             Difference]: With dead ends: 32922
[2023-11-29 02:53:49,050 INFO  L226             Difference]: Without dead ends: 17352
[2023-11-29 02:53:49,058 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12221 GetRequests, 12212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:53:49,059 INFO  L413           NwaCegarLoop]: 22965 mSDtfsCounter, 36121 mSDsluCounter, 22028 mSDsCounter, 0 mSdLazyCounter, 10801 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36121 SdHoareTripleChecker+Valid, 44993 SdHoareTripleChecker+Invalid, 11532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:49,059 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36121 Valid, 44993 Invalid, 11532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10801 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time]
[2023-11-29 02:53:49,076 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17352 states.
[2023-11-29 02:53:49,172 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17352 to 9240.
[2023-11-29 02:53:49,180 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9240 states, 9239 states have (on average 1.6653317458599415) internal successors, (15386), 9239 states have internal predecessors, (15386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:49,191 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9240 states to 9240 states and 15386 transitions.
[2023-11-29 02:53:49,191 INFO  L78                 Accepts]: Start accepts. Automaton has 9240 states and 15386 transitions. Word has length 6111
[2023-11-29 02:53:49,194 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:49,195 INFO  L495      AbstractCegarLoop]: Abstraction has 9240 states and 15386 transitions.
[2023-11-29 02:53:49,196 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1104.8) internal successors, (5524), 5 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:49,196 INFO  L276                IsEmpty]: Start isEmpty. Operand 9240 states and 15386 transitions.
[2023-11-29 02:53:49,348 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6113
[2023-11-29 02:53:49,348 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:53:49,349 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:53:49,429 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-11-29 02:53:49,550 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 02:53:49,550 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:53:49,551 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:53:49,553 INFO  L85        PathProgramCache]: Analyzing trace with hash -48000016, now seen corresponding path program 1 times
[2023-11-29 02:53:49,553 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:53:49,553 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933312039]
[2023-11-29 02:53:49,555 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:49,555 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:53:50,254 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:53:50,255 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76223524]
[2023-11-29 02:53:50,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:50,256 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:50,256 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:53:50,257 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:53:50,258 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 02:53:57,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:57,627 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28879 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:53:57,873 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:54:00,792 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 22 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:54:00,792 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:54:00,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked.
[2023-11-29 02:54:00,945 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:54:00,945 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933312039]
[2023-11-29 02:54:00,945 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:54:00,945 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76223524]
[2023-11-29 02:54:00,945 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [76223524] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:54:00,945 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:54:00,948 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:54:00,948 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817982330]
[2023-11-29 02:54:00,948 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:54:00,951 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:54:00,951 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:54:00,954 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:54:00,954 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:54:00,956 INFO  L87              Difference]: Start difference. First operand 9240 states and 15386 transitions. Second operand  has 5 states, 5 states have (on average 1105.4) internal successors, (5527), 5 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:12,289 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:54:12,289 INFO  L93              Difference]: Finished difference Result 32930 states and 54589 transitions.
[2023-11-29 02:54:12,290 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:54:12,291 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1105.4) internal successors, (5527), 5 states have internal predecessors, (5527), 0 states have call successors, (0), 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 6112
[2023-11-29 02:54:12,296 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:54:12,311 INFO  L225             Difference]: With dead ends: 32930
[2023-11-29 02:54:12,311 INFO  L226             Difference]: Without dead ends: 17353
[2023-11-29 02:54:12,321 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12223 GetRequests, 12214 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:54:12,321 INFO  L413           NwaCegarLoop]: 22957 mSDtfsCounter, 36103 mSDsluCounter, 22024 mSDsCounter, 0 mSdLazyCounter, 10801 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36103 SdHoareTripleChecker+Valid, 44981 SdHoareTripleChecker+Invalid, 11532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time
[2023-11-29 02:54:12,322 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36103 Valid, 44981 Invalid, 11532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10801 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time]
[2023-11-29 02:54:12,338 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17353 states.
[2023-11-29 02:54:12,437 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17353 to 9242.
[2023-11-29 02:54:12,446 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9242 states, 9241 states have (on average 1.6651877502434802) internal successors, (15388), 9241 states have internal predecessors, (15388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:12,456 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9242 states to 9242 states and 15388 transitions.
[2023-11-29 02:54:12,456 INFO  L78                 Accepts]: Start accepts. Automaton has 9242 states and 15388 transitions. Word has length 6112
[2023-11-29 02:54:12,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:54:12,460 INFO  L495      AbstractCegarLoop]: Abstraction has 9242 states and 15388 transitions.
[2023-11-29 02:54:12,461 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1105.4) internal successors, (5527), 5 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:12,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 9242 states and 15388 transitions.
[2023-11-29 02:54:12,725 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6114
[2023-11-29 02:54:12,725 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:54:12,726 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:54:12,809 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 02:54:12,927 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 02:54:12,927 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:54:12,932 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:54:12,933 INFO  L85        PathProgramCache]: Analyzing trace with hash 584850686, now seen corresponding path program 1 times
[2023-11-29 02:54:12,933 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:54:12,934 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344840627]
[2023-11-29 02:54:12,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:12,934 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:54:13,628 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:54:13,628 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593681694]
[2023-11-29 02:54:13,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:13,629 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:13,630 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:54:13,630 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:54:13,631 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 02:54:20,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:54:20,909 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28882 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:54:20,984 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:54:23,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 24 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:54:23,768 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:54:23,908 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked.
[2023-11-29 02:54:23,908 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:54:23,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344840627]
[2023-11-29 02:54:23,909 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:54:23,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593681694]
[2023-11-29 02:54:23,909 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [593681694] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:54:23,909 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:54:23,911 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:54:23,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440089212]
[2023-11-29 02:54:23,912 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:54:23,915 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:54:23,915 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:54:23,918 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:54:23,918 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:54:23,919 INFO  L87              Difference]: Start difference. First operand 9242 states and 15388 transitions. Second operand  has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:34,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:54:34,717 INFO  L93              Difference]: Finished difference Result 32938 states and 54597 transitions.
[2023-11-29 02:54:34,718 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:54:34,719 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 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 6113
[2023-11-29 02:54:34,723 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:54:34,733 INFO  L225             Difference]: With dead ends: 32938
[2023-11-29 02:54:34,733 INFO  L226             Difference]: Without dead ends: 17354
[2023-11-29 02:54:34,738 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12225 GetRequests, 12216 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:54:34,738 INFO  L413           NwaCegarLoop]: 22949 mSDtfsCounter, 36105 mSDsluCounter, 22018 mSDsCounter, 0 mSdLazyCounter, 10801 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36105 SdHoareTripleChecker+Valid, 44967 SdHoareTripleChecker+Invalid, 11532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time
[2023-11-29 02:54:34,739 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36105 Valid, 44967 Invalid, 11532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10801 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time]
[2023-11-29 02:54:34,750 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17354 states.
[2023-11-29 02:54:34,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17354 to 9244.
[2023-11-29 02:54:34,831 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9244 states, 9243 states have (on average 1.6650438169425512) internal successors, (15390), 9243 states have internal predecessors, (15390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:34,840 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 15390 transitions.
[2023-11-29 02:54:34,840 INFO  L78                 Accepts]: Start accepts. Automaton has 9244 states and 15390 transitions. Word has length 6113
[2023-11-29 02:54:34,843 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:54:34,843 INFO  L495      AbstractCegarLoop]: Abstraction has 9244 states and 15390 transitions.
[2023-11-29 02:54:34,844 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:34,844 INFO  L276                IsEmpty]: Start isEmpty. Operand 9244 states and 15390 transitions.
[2023-11-29 02:54:34,994 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6115
[2023-11-29 02:54:34,994 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:54:34,995 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:54:35,078 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 02:54:35,196 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 02:54:35,196 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:54:35,197 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:54:35,199 INFO  L85        PathProgramCache]: Analyzing trace with hash -1654954794, now seen corresponding path program 1 times
[2023-11-29 02:54:35,199 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:54:35,199 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987267529]
[2023-11-29 02:54:35,200 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:35,200 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:54:35,820 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:54:35,820 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782350546]
[2023-11-29 02:54:35,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:35,821 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:35,821 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:54:35,822 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:54:35,824 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 02:54:42,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:54:42,974 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28885 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:54:43,048 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:54:45,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 26 proven. 584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:54:45,957 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:54:46,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked.
[2023-11-29 02:54:46,131 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:54:46,131 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987267529]
[2023-11-29 02:54:46,131 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:54:46,131 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782350546]
[2023-11-29 02:54:46,131 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782350546] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:54:46,131 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:54:46,134 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:54:46,134 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841547696]
[2023-11-29 02:54:46,134 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:54:46,137 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:54:46,137 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:54:46,140 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:54:46,140 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:54:46,141 INFO  L87              Difference]: Start difference. First operand 9244 states and 15390 transitions. Second operand  has 5 states, 5 states have (on average 1106.6) internal successors, (5533), 5 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:56,865 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:54:56,865 INFO  L93              Difference]: Finished difference Result 32946 states and 54605 transitions.
[2023-11-29 02:54:56,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:54:56,866 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1106.6) internal successors, (5533), 5 states have internal predecessors, (5533), 0 states have call successors, (0), 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 6114
[2023-11-29 02:54:56,871 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:54:56,886 INFO  L225             Difference]: With dead ends: 32946
[2023-11-29 02:54:56,887 INFO  L226             Difference]: Without dead ends: 17355
[2023-11-29 02:54:56,896 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12227 GetRequests, 12218 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:54:56,897 INFO  L413           NwaCegarLoop]: 22941 mSDtfsCounter, 36097 mSDsluCounter, 22013 mSDsCounter, 0 mSdLazyCounter, 10801 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36097 SdHoareTripleChecker+Valid, 44954 SdHoareTripleChecker+Invalid, 11532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:54:56,897 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36097 Valid, 44954 Invalid, 11532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10801 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time]
[2023-11-29 02:54:56,913 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17355 states.
[2023-11-29 02:54:57,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17355 to 9246.
[2023-11-29 02:54:57,025 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9246 states, 9245 states have (on average 1.6648999459167118) internal successors, (15392), 9245 states have internal predecessors, (15392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:57,036 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 15392 transitions.
[2023-11-29 02:54:57,036 INFO  L78                 Accepts]: Start accepts. Automaton has 9246 states and 15392 transitions. Word has length 6114
[2023-11-29 02:54:57,039 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:54:57,040 INFO  L495      AbstractCegarLoop]: Abstraction has 9246 states and 15392 transitions.
[2023-11-29 02:54:57,041 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1106.6) internal successors, (5533), 5 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:57,041 INFO  L276                IsEmpty]: Start isEmpty. Operand 9246 states and 15392 transitions.
[2023-11-29 02:54:57,214 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6116
[2023-11-29 02:54:57,214 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:54:57,215 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:54:57,299 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 02:54:57,416 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:57,416 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:54:57,416 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:54:57,417 INFO  L85        PathProgramCache]: Analyzing trace with hash 1241525402, now seen corresponding path program 1 times
[2023-11-29 02:54:57,418 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:54:57,418 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673064308]
[2023-11-29 02:54:57,418 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:57,418 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:54:58,045 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:54:58,046 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480160214]
[2023-11-29 02:54:58,047 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:58,047 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:58,047 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:54:58,048 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:54:58,049 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 02:55:04,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:55:05,170 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28889 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:55:05,254 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:55:07,961 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 28 proven. 582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:55:07,961 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:55:08,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked.
[2023-11-29 02:55:08,106 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:55:08,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673064308]
[2023-11-29 02:55:08,106 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:55:08,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480160214]
[2023-11-29 02:55:08,106 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480160214] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:55:08,106 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:55:08,109 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:55:08,109 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547528022]
[2023-11-29 02:55:08,109 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:55:08,112 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:55:08,112 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:55:08,115 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:55:08,116 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:55:08,117 INFO  L87              Difference]: Start difference. First operand 9246 states and 15392 transitions. Second operand  has 5 states, 5 states have (on average 1107.2) internal successors, (5536), 5 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:55:18,963 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:55:18,964 INFO  L93              Difference]: Finished difference Result 32954 states and 54613 transitions.
[2023-11-29 02:55:18,964 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:55:18,965 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1107.2) internal successors, (5536), 5 states have internal predecessors, (5536), 0 states have call successors, (0), 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 6115
[2023-11-29 02:55:18,969 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:55:18,979 INFO  L225             Difference]: With dead ends: 32954
[2023-11-29 02:55:18,979 INFO  L226             Difference]: Without dead ends: 17356
[2023-11-29 02:55:18,984 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12229 GetRequests, 12220 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:55:18,984 INFO  L413           NwaCegarLoop]: 22933 mSDtfsCounter, 36089 mSDsluCounter, 22008 mSDsCounter, 0 mSdLazyCounter, 10801 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36089 SdHoareTripleChecker+Valid, 44941 SdHoareTripleChecker+Invalid, 11532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:55:18,984 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36089 Valid, 44941 Invalid, 11532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10801 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time]
[2023-11-29 02:55:19,000 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17356 states.
[2023-11-29 02:55:19,089 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17356 to 9248.
[2023-11-29 02:55:19,099 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9248 states, 9247 states have (on average 1.6647561371255541) internal successors, (15394), 9247 states have internal predecessors, (15394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:55:19,110 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9248 states to 9248 states and 15394 transitions.
[2023-11-29 02:55:19,110 INFO  L78                 Accepts]: Start accepts. Automaton has 9248 states and 15394 transitions. Word has length 6115
[2023-11-29 02:55:19,114 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:55:19,114 INFO  L495      AbstractCegarLoop]: Abstraction has 9248 states and 15394 transitions.
[2023-11-29 02:55:19,115 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1107.2) internal successors, (5536), 5 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:55:19,115 INFO  L276                IsEmpty]: Start isEmpty. Operand 9248 states and 15394 transitions.
[2023-11-29 02:55:19,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6117
[2023-11-29 02:55:19,278 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:55:19,279 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:55:19,360 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 02:55:19,479 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:55:19,480 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:55:19,480 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:55:19,481 INFO  L85        PathProgramCache]: Analyzing trace with hash -579877570, now seen corresponding path program 1 times
[2023-11-29 02:55:19,481 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:55:19,481 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155686736]
[2023-11-29 02:55:19,482 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:55:19,483 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:55:20,167 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:55:20,167 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190103568]
[2023-11-29 02:55:20,169 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:55:20,169 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:55:20,169 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:55:20,170 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:55:20,171 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 02:55:27,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:55:27,310 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28892 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:55:27,391 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:55:30,334 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 30 proven. 580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:55:30,334 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:55:30,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked.
[2023-11-29 02:55:30,714 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:55:30,714 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155686736]
[2023-11-29 02:55:30,714 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:55:30,714 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190103568]
[2023-11-29 02:55:30,714 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [190103568] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:55:30,714 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:55:30,719 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 02:55:30,719 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242263590]
[2023-11-29 02:55:30,719 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:55:30,722 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:55:30,722 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:55:30,726 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:55:30,726 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2023-11-29 02:55:30,727 INFO  L87              Difference]: Start difference. First operand 9248 states and 15394 transitions. Second operand  has 6 states, 6 states have (on average 923.1666666666666) internal successors, (5539), 6 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:55:54,141 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:55:54,141 INFO  L93              Difference]: Finished difference Result 41147 states and 68244 transitions.
[2023-11-29 02:55:54,141 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 02:55:54,142 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 923.1666666666666) internal successors, (5539), 6 states have internal predecessors, (5539), 0 states have call successors, (0), 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 6116
[2023-11-29 02:55:54,146 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:55:54,162 INFO  L225             Difference]: With dead ends: 41147
[2023-11-29 02:55:54,163 INFO  L226             Difference]: Without dead ends: 25542
[2023-11-29 02:55:54,168 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12232 GetRequests, 12220 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:55:54,168 INFO  L413           NwaCegarLoop]: 22927 mSDtfsCounter, 38303 mSDsluCounter, 76349 mSDsCounter, 0 mSdLazyCounter, 29821 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38303 SdHoareTripleChecker+Valid, 99276 SdHoareTripleChecker+Invalid, 30554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 29821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:55:54,169 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [38303 Valid, 99276 Invalid, 30554 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [733 Valid, 29821 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time]
[2023-11-29 02:55:54,188 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25542 states.
[2023-11-29 02:55:54,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25542 to 9250.
[2023-11-29 02:55:54,313 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9250 states, 9249 states have (on average 1.6646123905287058) internal successors, (15396), 9249 states have internal predecessors, (15396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:55:54,324 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9250 states to 9250 states and 15396 transitions.
[2023-11-29 02:55:54,324 INFO  L78                 Accepts]: Start accepts. Automaton has 9250 states and 15396 transitions. Word has length 6116
[2023-11-29 02:55:54,328 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:55:54,328 INFO  L495      AbstractCegarLoop]: Abstraction has 9250 states and 15396 transitions.
[2023-11-29 02:55:54,329 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 923.1666666666666) internal successors, (5539), 6 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:55:54,329 INFO  L276                IsEmpty]: Start isEmpty. Operand 9250 states and 15396 transitions.
[2023-11-29 02:55:54,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6118
[2023-11-29 02:55:54,502 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:55:54,503 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:55:54,586 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 02:55:54,704 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2023-11-29 02:55:54,704 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:55:54,704 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:55:54,705 INFO  L85        PathProgramCache]: Analyzing trace with hash 818429108, now seen corresponding path program 1 times
[2023-11-29 02:55:54,705 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:55:54,705 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839366936]
[2023-11-29 02:55:54,706 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:55:54,706 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:55:55,376 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:55:55,376 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951355476]
[2023-11-29 02:55:55,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:55:55,377 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:55:55,378 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:55:55,378 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:55:55,379 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 02:56:02,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:56:02,469 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28895 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:56:02,550 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:56:05,371 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 32 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:56:05,371 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:56:05,520 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked.
[2023-11-29 02:56:05,520 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:56:05,521 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839366936]
[2023-11-29 02:56:05,521 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:56:05,521 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951355476]
[2023-11-29 02:56:05,521 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951355476] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:56:05,521 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:56:05,523 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:56:05,523 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174317916]
[2023-11-29 02:56:05,523 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:56:05,528 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:56:05,528 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:56:05,532 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:56:05,532 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:56:05,533 INFO  L87              Difference]: Start difference. First operand 9250 states and 15396 transitions. Second operand  has 5 states, 5 states have (on average 1108.4) internal successors, (5542), 5 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:56:16,241 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:56:16,241 INFO  L93              Difference]: Finished difference Result 32970 states and 54629 transitions.
[2023-11-29 02:56:16,242 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:56:16,243 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1108.4) internal successors, (5542), 5 states have internal predecessors, (5542), 0 states have call successors, (0), 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 6117
[2023-11-29 02:56:16,248 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:56:16,262 INFO  L225             Difference]: With dead ends: 32970
[2023-11-29 02:56:16,262 INFO  L226             Difference]: Without dead ends: 17358
[2023-11-29 02:56:16,271 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12233 GetRequests, 12224 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:56:16,272 INFO  L413           NwaCegarLoop]: 22917 mSDtfsCounter, 36058 mSDsluCounter, 21999 mSDsCounter, 0 mSdLazyCounter, 10801 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36058 SdHoareTripleChecker+Valid, 44916 SdHoareTripleChecker+Invalid, 11532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time
[2023-11-29 02:56:16,272 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36058 Valid, 44916 Invalid, 11532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10801 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time]
[2023-11-29 02:56:16,289 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17358 states.
[2023-11-29 02:56:16,379 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17358 to 9252.
[2023-11-29 02:56:16,387 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9252 states, 9251 states have (on average 1.6644687060858285) internal successors, (15398), 9251 states have internal predecessors, (15398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:56:16,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9252 states to 9252 states and 15398 transitions.
[2023-11-29 02:56:16,397 INFO  L78                 Accepts]: Start accepts. Automaton has 9252 states and 15398 transitions. Word has length 6117
[2023-11-29 02:56:16,400 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:56:16,400 INFO  L495      AbstractCegarLoop]: Abstraction has 9252 states and 15398 transitions.
[2023-11-29 02:56:16,401 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1108.4) internal successors, (5542), 5 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:56:16,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 9252 states and 15398 transitions.
[2023-11-29 02:56:16,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6119
[2023-11-29 02:56:16,554 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:56:16,555 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:56:16,631 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 02:56:16,756 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2023-11-29 02:56:16,756 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:56:16,757 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:56:16,758 INFO  L85        PathProgramCache]: Analyzing trace with hash -1584801244, now seen corresponding path program 1 times
[2023-11-29 02:56:16,758 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:56:16,758 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872067408]
[2023-11-29 02:56:16,759 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:56:16,759 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:56:17,386 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:56:17,386 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210862074]
[2023-11-29 02:56:17,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:56:17,387 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:56:17,387 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:56:17,388 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:56:17,389 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 02:56:24,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:56:24,372 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28898 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:56:24,442 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:56:27,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:56:27,113 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:56:27,279 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked.
[2023-11-29 02:56:27,279 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:56:27,279 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872067408]
[2023-11-29 02:56:27,279 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:56:27,279 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210862074]
[2023-11-29 02:56:27,279 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [210862074] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:56:27,280 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:56:27,282 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:56:27,282 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183686904]
[2023-11-29 02:56:27,282 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:56:27,285 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:56:27,286 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:56:27,288 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:56:27,289 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:56:27,290 INFO  L87              Difference]: Start difference. First operand 9252 states and 15398 transitions. Second operand  has 5 states, 5 states have (on average 1109.0) internal successors, (5545), 5 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:56:38,855 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:56:38,855 INFO  L93              Difference]: Finished difference Result 32978 states and 54637 transitions.
[2023-11-29 02:56:38,856 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:56:38,857 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1109.0) internal successors, (5545), 5 states have internal predecessors, (5545), 0 states have call successors, (0), 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 6118
[2023-11-29 02:56:38,861 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:56:38,871 INFO  L225             Difference]: With dead ends: 32978
[2023-11-29 02:56:38,871 INFO  L226             Difference]: Without dead ends: 17359
[2023-11-29 02:56:38,876 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12235 GetRequests, 12226 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:56:38,876 INFO  L413           NwaCegarLoop]: 22909 mSDtfsCounter, 24780 mSDsluCounter, 32544 mSDsCounter, 0 mSdLazyCounter, 13729 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24780 SdHoareTripleChecker+Valid, 55453 SdHoareTripleChecker+Invalid, 14460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 13729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time
[2023-11-29 02:56:38,877 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24780 Valid, 55453 Invalid, 14460 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 13729 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time]
[2023-11-29 02:56:38,890 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17359 states.
[2023-11-29 02:56:38,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17359 to 9254.
[2023-11-29 02:56:38,976 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9254 states, 9253 states have (on average 1.6643250837566195) internal successors, (15400), 9253 states have internal predecessors, (15400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:56:38,986 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9254 states to 9254 states and 15400 transitions.
[2023-11-29 02:56:38,986 INFO  L78                 Accepts]: Start accepts. Automaton has 9254 states and 15400 transitions. Word has length 6118
[2023-11-29 02:56:38,989 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:56:38,989 INFO  L495      AbstractCegarLoop]: Abstraction has 9254 states and 15400 transitions.
[2023-11-29 02:56:38,990 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1109.0) internal successors, (5545), 5 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:56:38,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 9254 states and 15400 transitions.
[2023-11-29 02:56:39,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6120
[2023-11-29 02:56:39,142 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:56:39,143 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:56:39,216 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 02:56:39,343 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2023-11-29 02:56:39,344 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:56:39,344 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:56:39,345 INFO  L85        PathProgramCache]: Analyzing trace with hash -1273957040, now seen corresponding path program 1 times
[2023-11-29 02:56:39,345 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:56:39,345 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448492662]
[2023-11-29 02:56:39,346 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:56:39,346 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:56:39,974 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:56:39,974 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565810694]
[2023-11-29 02:56:39,975 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:56:39,975 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:56:39,975 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:56:39,976 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:56:39,977 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 02:56:46,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:56:46,848 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28902 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:56:46,917 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:56:50,115 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 36 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:56:50,115 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:56:50,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked.
[2023-11-29 02:56:50,299 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:56:50,299 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448492662]
[2023-11-29 02:56:50,299 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:56:50,299 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565810694]
[2023-11-29 02:56:50,299 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [565810694] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:56:50,299 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:56:50,303 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:56:50,303 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229033071]
[2023-11-29 02:56:50,303 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:56:50,306 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:56:50,306 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:56:50,310 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:56:50,310 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:56:50,312 INFO  L87              Difference]: Start difference. First operand 9254 states and 15400 transitions. Second operand  has 5 states, 5 states have (on average 1109.6) internal successors, (5548), 5 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:57:00,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:57:00,401 INFO  L93              Difference]: Finished difference Result 32986 states and 54645 transitions.
[2023-11-29 02:57:00,402 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:57:00,403 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1109.6) internal successors, (5548), 5 states have internal predecessors, (5548), 0 states have call successors, (0), 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 6119
[2023-11-29 02:57:00,408 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:57:00,422 INFO  L225             Difference]: With dead ends: 32986
[2023-11-29 02:57:00,422 INFO  L226             Difference]: Without dead ends: 17360
[2023-11-29 02:57:00,431 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12237 GetRequests, 12228 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:57:00,431 INFO  L413           NwaCegarLoop]: 22901 mSDtfsCounter, 36057 mSDsluCounter, 21988 mSDsCounter, 0 mSdLazyCounter, 10801 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36057 SdHoareTripleChecker+Valid, 44889 SdHoareTripleChecker+Invalid, 11532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:57:00,432 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36057 Valid, 44889 Invalid, 11532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10801 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time]
[2023-11-29 02:57:00,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17360 states.
[2023-11-29 02:57:00,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17360 to 9256.
[2023-11-29 02:57:00,544 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9256 states, 9255 states have (on average 1.6641815235008104) internal successors, (15402), 9255 states have internal predecessors, (15402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:57:00,554 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9256 states to 9256 states and 15402 transitions.
[2023-11-29 02:57:00,555 INFO  L78                 Accepts]: Start accepts. Automaton has 9256 states and 15402 transitions. Word has length 6119
[2023-11-29 02:57:00,558 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:57:00,558 INFO  L495      AbstractCegarLoop]: Abstraction has 9256 states and 15402 transitions.
[2023-11-29 02:57:00,559 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1109.6) internal successors, (5548), 5 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:57:00,560 INFO  L276                IsEmpty]: Start isEmpty. Operand 9256 states and 15402 transitions.
[2023-11-29 02:57:00,710 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6121
[2023-11-29 02:57:00,710 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:57:00,711 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:57:00,787 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 02:57:00,911 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:57:00,912 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:57:00,912 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:57:00,913 INFO  L85        PathProgramCache]: Analyzing trace with hash 465832844, now seen corresponding path program 1 times
[2023-11-29 02:57:00,913 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:57:00,913 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28761553]
[2023-11-29 02:57:00,914 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:57:00,914 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:57:01,601 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:57:01,601 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521327419]
[2023-11-29 02:57:01,602 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:57:01,602 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:57:01,602 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:57:01,603 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:57:01,604 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 02:57:08,185 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:57:08,363 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28905 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:57:08,438 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:57:10,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 38 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:57:10,886 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:57:11,054 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked.
[2023-11-29 02:57:11,054 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:57:11,054 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28761553]
[2023-11-29 02:57:11,054 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:57:11,054 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521327419]
[2023-11-29 02:57:11,054 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521327419] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:57:11,054 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:57:11,057 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:57:11,057 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052174223]
[2023-11-29 02:57:11,057 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:57:11,060 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:57:11,060 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:57:11,062 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:57:11,063 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:57:11,064 INFO  L87              Difference]: Start difference. First operand 9256 states and 15402 transitions. Second operand  has 5 states, 5 states have (on average 1110.2) internal successors, (5551), 5 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:57:22,723 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:57:22,723 INFO  L93              Difference]: Finished difference Result 32994 states and 54653 transitions.
[2023-11-29 02:57:22,723 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:57:22,725 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1110.2) internal successors, (5551), 5 states have internal predecessors, (5551), 0 states have call successors, (0), 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 6120
[2023-11-29 02:57:22,728 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:57:22,739 INFO  L225             Difference]: With dead ends: 32994
[2023-11-29 02:57:22,739 INFO  L226             Difference]: Without dead ends: 17361
[2023-11-29 02:57:22,744 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12239 GetRequests, 12230 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:57:22,745 INFO  L413           NwaCegarLoop]: 22893 mSDtfsCounter, 24752 mSDsluCounter, 33240 mSDsCounter, 0 mSdLazyCounter, 14817 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24752 SdHoareTripleChecker+Valid, 56133 SdHoareTripleChecker+Invalid, 15548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 14817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time
[2023-11-29 02:57:22,745 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24752 Valid, 56133 Invalid, 15548 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 14817 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time]
[2023-11-29 02:57:22,759 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17361 states.
[2023-11-29 02:57:22,839 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17361 to 9258.
[2023-11-29 02:57:22,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9258 states, 9257 states have (on average 1.664038025278168) internal successors, (15404), 9257 states have internal predecessors, (15404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:57:22,856 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9258 states to 9258 states and 15404 transitions.
[2023-11-29 02:57:22,857 INFO  L78                 Accepts]: Start accepts. Automaton has 9258 states and 15404 transitions. Word has length 6120
[2023-11-29 02:57:22,860 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:57:22,860 INFO  L495      AbstractCegarLoop]: Abstraction has 9258 states and 15404 transitions.
[2023-11-29 02:57:22,861 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1110.2) internal successors, (5551), 5 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:57:22,861 INFO  L276                IsEmpty]: Start isEmpty. Operand 9258 states and 15404 transitions.
[2023-11-29 02:57:23,011 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6122
[2023-11-29 02:57:23,011 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:57:23,013 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:57:23,091 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 02:57:23,213 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:57:23,213 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:57:23,214 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:57:23,214 INFO  L85        PathProgramCache]: Analyzing trace with hash 2004492650, now seen corresponding path program 1 times
[2023-11-29 02:57:23,214 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:57:23,215 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759423857]
[2023-11-29 02:57:23,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:57:23,215 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:57:23,823 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:57:23,823 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968811382]
[2023-11-29 02:57:23,825 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:57:23,825 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:57:23,825 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:57:23,826 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:57:23,827 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 02:57:30,304 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:57:30,481 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28908 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:57:30,556 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:57:33,031 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 40 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:57:33,031 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:57:33,217 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked.
[2023-11-29 02:57:33,218 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:57:33,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759423857]
[2023-11-29 02:57:33,218 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:57:33,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968811382]
[2023-11-29 02:57:33,218 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968811382] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:57:33,218 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:57:33,222 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:57:33,222 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931718272]
[2023-11-29 02:57:33,222 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:57:33,225 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:57:33,225 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:57:33,228 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:57:33,228 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:57:33,229 INFO  L87              Difference]: Start difference. First operand 9258 states and 15404 transitions. Second operand  has 5 states, 5 states have (on average 1111.2) internal successors, (5556), 5 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:57:43,484 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:57:43,484 INFO  L93              Difference]: Finished difference Result 33005 states and 54666 transitions.
[2023-11-29 02:57:43,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:57:43,485 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1111.2) internal successors, (5556), 5 states have internal predecessors, (5556), 0 states have call successors, (0), 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 6121
[2023-11-29 02:57:43,490 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:57:43,504 INFO  L225             Difference]: With dead ends: 33005
[2023-11-29 02:57:43,504 INFO  L226             Difference]: Without dead ends: 17365
[2023-11-29 02:57:43,512 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12241 GetRequests, 12232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:57:43,513 INFO  L413           NwaCegarLoop]: 22880 mSDtfsCounter, 36020 mSDsluCounter, 21978 mSDsCounter, 0 mSdLazyCounter, 10797 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36020 SdHoareTripleChecker+Valid, 44858 SdHoareTripleChecker+Invalid, 11528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2023-11-29 02:57:43,513 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36020 Valid, 44858 Invalid, 11528 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10797 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2023-11-29 02:57:43,529 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17365 states.
[2023-11-29 02:57:43,615 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17365 to 9263.
[2023-11-29 02:57:43,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9263 states, 9262 states have (on average 1.663895486935867) internal successors, (15411), 9262 states have internal predecessors, (15411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:57:43,633 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 15411 transitions.
[2023-11-29 02:57:43,633 INFO  L78                 Accepts]: Start accepts. Automaton has 9263 states and 15411 transitions. Word has length 6121
[2023-11-29 02:57:43,636 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:57:43,636 INFO  L495      AbstractCegarLoop]: Abstraction has 9263 states and 15411 transitions.
[2023-11-29 02:57:43,637 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1111.2) internal successors, (5556), 5 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:57:43,637 INFO  L276                IsEmpty]: Start isEmpty. Operand 9263 states and 15411 transitions.
[2023-11-29 02:57:43,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6123
[2023-11-29 02:57:43,788 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:57:43,789 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, 2, 2, 2, 2, 2, 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[2023-11-29 02:57:43,862 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 02:57:43,989 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:57:43,990 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:57:43,990 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:57:43,991 INFO  L85        PathProgramCache]: Analyzing trace with hash 1945985110, now seen corresponding path program 1 times
[2023-11-29 02:57:43,991 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:57:43,991 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131847229]
[2023-11-29 02:57:43,992 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:57:43,992 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:57:44,731 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:57:44,731 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126945182]
[2023-11-29 02:57:44,732 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:57:44,732 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:57:44,732 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:57:44,733 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:57:44,734 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 02:57:51,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:57:51,456 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28912 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:57:51,523 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:57:53,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 44 proven. 566 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:57:53,888 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:57:54,094 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked.
[2023-11-29 02:57:54,094 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:57:54,094 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131847229]
[2023-11-29 02:57:54,095 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:57:54,095 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126945182]
[2023-11-29 02:57:54,095 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126945182] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:57:54,095 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:57:54,099 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:57:54,099 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685894791]
[2023-11-29 02:57:54,099 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:57:54,101 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:57:54,102 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:57:54,104 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:57:54,104 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:57:54,105 INFO  L87              Difference]: Start difference. First operand 9263 states and 15411 transitions. Second operand  has 5 states, 5 states have (on average 1112.2) internal successors, (5561), 5 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:58:03,985 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:58:03,985 INFO  L93              Difference]: Finished difference Result 33078 states and 54782 transitions.
[2023-11-29 02:58:03,985 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:58:03,986 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1112.2) internal successors, (5561), 5 states have internal predecessors, (5561), 0 states have call successors, (0), 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 6122
[2023-11-29 02:58:03,991 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:58:04,005 INFO  L225             Difference]: With dead ends: 33078
[2023-11-29 02:58:04,005 INFO  L226             Difference]: Without dead ends: 17369
[2023-11-29 02:58:04,014 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12243 GetRequests, 12234 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:58:04,014 INFO  L413           NwaCegarLoop]: 22867 mSDtfsCounter, 36007 mSDsluCounter, 21972 mSDsCounter, 0 mSdLazyCounter, 10793 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36007 SdHoareTripleChecker+Valid, 44839 SdHoareTripleChecker+Invalid, 11524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time
[2023-11-29 02:58:04,014 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36007 Valid, 44839 Invalid, 11524 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10793 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time]
[2023-11-29 02:58:04,029 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17369 states.
[2023-11-29 02:58:04,121 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17369 to 9268.
[2023-11-29 02:58:04,129 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9268 states, 9267 states have (on average 1.6637531024063883) internal successors, (15418), 9267 states have internal predecessors, (15418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:58:04,139 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 15418 transitions.
[2023-11-29 02:58:04,140 INFO  L78                 Accepts]: Start accepts. Automaton has 9268 states and 15418 transitions. Word has length 6122
[2023-11-29 02:58:04,143 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:58:04,143 INFO  L495      AbstractCegarLoop]: Abstraction has 9268 states and 15418 transitions.
[2023-11-29 02:58:04,144 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1112.2) internal successors, (5561), 5 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:58:04,144 INFO  L276                IsEmpty]: Start isEmpty. Operand 9268 states and 15418 transitions.
[2023-11-29 02:58:04,397 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6124
[2023-11-29 02:58:04,397 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:58:04,398 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:58:04,474 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 02:58:04,598 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-11-29 02:58:04,599 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:58:04,600 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:58:04,601 INFO  L85        PathProgramCache]: Analyzing trace with hash 1222188572, now seen corresponding path program 1 times
[2023-11-29 02:58:04,601 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:58:04,601 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478546422]
[2023-11-29 02:58:04,601 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:58:04,602 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:58:05,208 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:58:05,208 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560196046]
[2023-11-29 02:58:05,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:58:05,209 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:58:05,209 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:58:05,210 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:58:05,211 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 02:58:11,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:58:12,110 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28915 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:58:12,178 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:58:14,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 48 proven. 562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:58:14,628 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:58:14,807 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked.
[2023-11-29 02:58:14,807 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:58:14,807 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478546422]
[2023-11-29 02:58:14,807 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:58:14,807 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560196046]
[2023-11-29 02:58:14,807 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [560196046] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:58:14,808 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:58:14,810 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:58:14,810 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733168327]
[2023-11-29 02:58:14,810 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:58:14,813 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:58:14,813 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:58:14,815 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:58:14,816 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:58:14,817 INFO  L87              Difference]: Start difference. First operand 9268 states and 15418 transitions. Second operand  has 5 states, 5 states have (on average 1113.2) internal successors, (5566), 5 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:58:25,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:58:25,099 INFO  L93              Difference]: Finished difference Result 33102 states and 54816 transitions.
[2023-11-29 02:58:25,099 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:58:25,100 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1113.2) internal successors, (5566), 5 states have internal predecessors, (5566), 0 states have call successors, (0), 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 6123
[2023-11-29 02:58:25,104 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:58:25,114 INFO  L225             Difference]: With dead ends: 33102
[2023-11-29 02:58:25,114 INFO  L226             Difference]: Without dead ends: 17373
[2023-11-29 02:58:25,118 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12245 GetRequests, 12236 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:58:25,118 INFO  L413           NwaCegarLoop]: 22854 mSDtfsCounter, 36015 mSDsluCounter, 21965 mSDsCounter, 0 mSdLazyCounter, 10789 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36015 SdHoareTripleChecker+Valid, 44819 SdHoareTripleChecker+Invalid, 11520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:58:25,118 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36015 Valid, 44819 Invalid, 11520 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10789 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time]
[2023-11-29 02:58:25,130 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17373 states.
[2023-11-29 02:58:25,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17373 to 9273.
[2023-11-29 02:58:25,217 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9273 states, 9272 states have (on average 1.6636108714408973) internal successors, (15425), 9272 states have internal predecessors, (15425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:58:25,227 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9273 states to 9273 states and 15425 transitions.
[2023-11-29 02:58:25,227 INFO  L78                 Accepts]: Start accepts. Automaton has 9273 states and 15425 transitions. Word has length 6123
[2023-11-29 02:58:25,230 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:58:25,230 INFO  L495      AbstractCegarLoop]: Abstraction has 9273 states and 15425 transitions.
[2023-11-29 02:58:25,231 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1113.2) internal successors, (5566), 5 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:58:25,231 INFO  L276                IsEmpty]: Start isEmpty. Operand 9273 states and 15425 transitions.
[2023-11-29 02:58:25,386 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6125
[2023-11-29 02:58:25,386 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:58:25,387 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:58:25,462 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2023-11-29 02:58:25,587 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:58:25,588 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:58:25,588 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:58:25,590 INFO  L85        PathProgramCache]: Analyzing trace with hash -1792053856, now seen corresponding path program 1 times
[2023-11-29 02:58:25,590 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:58:25,590 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325196278]
[2023-11-29 02:58:25,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:58:25,591 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:58:26,325 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:58:26,325 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755580797]
[2023-11-29 02:58:26,326 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:58:26,327 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:58:26,327 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:58:26,327 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:58:26,328 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 02:58:33,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:58:33,312 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28919 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:58:33,408 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:58:35,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 52 proven. 558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:58:35,837 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:58:36,048 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked.
[2023-11-29 02:58:36,049 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:58:36,049 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325196278]
[2023-11-29 02:58:36,049 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:58:36,049 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755580797]
[2023-11-29 02:58:36,049 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755580797] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:58:36,049 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:58:36,053 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:58:36,053 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381866198]
[2023-11-29 02:58:36,053 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:58:36,056 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:58:36,056 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:58:36,058 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:58:36,058 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:58:36,060 INFO  L87              Difference]: Start difference. First operand 9273 states and 15425 transitions. Second operand  has 5 states, 5 states have (on average 1113.8) internal successors, (5569), 5 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:58:47,503 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:58:47,503 INFO  L93              Difference]: Finished difference Result 33123 states and 54845 transitions.
[2023-11-29 02:58:47,503 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:58:47,504 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1113.8) internal successors, (5569), 5 states have internal predecessors, (5569), 0 states have call successors, (0), 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 6124
[2023-11-29 02:58:47,509 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:58:47,521 INFO  L225             Difference]: With dead ends: 33123
[2023-11-29 02:58:47,521 INFO  L226             Difference]: Without dead ends: 17374
[2023-11-29 02:58:47,529 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12247 GetRequests, 12238 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:58:47,529 INFO  L413           NwaCegarLoop]: 22846 mSDtfsCounter, 24744 mSDsluCounter, 32493 mSDsCounter, 0 mSdLazyCounter, 13717 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24744 SdHoareTripleChecker+Valid, 55339 SdHoareTripleChecker+Invalid, 14448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 13717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time
[2023-11-29 02:58:47,530 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24744 Valid, 55339 Invalid, 14448 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 13717 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time]
[2023-11-29 02:58:47,544 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17374 states.
[2023-11-29 02:58:47,651 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17374 to 9275.
[2023-11-29 02:58:47,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9275 states, 9274 states have (on average 1.6634677593271512) internal successors, (15427), 9274 states have internal predecessors, (15427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:58:47,668 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 15427 transitions.
[2023-11-29 02:58:47,669 INFO  L78                 Accepts]: Start accepts. Automaton has 9275 states and 15427 transitions. Word has length 6124
[2023-11-29 02:58:47,672 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:58:47,672 INFO  L495      AbstractCegarLoop]: Abstraction has 9275 states and 15427 transitions.
[2023-11-29 02:58:47,673 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1113.8) internal successors, (5569), 5 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:58:47,673 INFO  L276                IsEmpty]: Start isEmpty. Operand 9275 states and 15427 transitions.
[2023-11-29 02:58:47,828 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6126
[2023-11-29 02:58:47,828 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:58:47,829 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:58:47,905 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-11-29 02:58:48,030 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 02:58:48,030 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:58:48,030 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:58:48,031 INFO  L85        PathProgramCache]: Analyzing trace with hash -264617036, now seen corresponding path program 1 times
[2023-11-29 02:58:48,031 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:58:48,031 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557504191]
[2023-11-29 02:58:48,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:58:48,032 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:58:48,653 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:58:48,653 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663214171]
[2023-11-29 02:58:48,654 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:58:48,654 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:58:48,654 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:58:48,655 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:58:48,656 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 02:58:55,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:58:55,589 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28922 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:58:55,660 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:58:58,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 54 proven. 556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:58:58,114 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:58:58,502 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked.
[2023-11-29 02:58:58,502 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:58:58,502 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557504191]
[2023-11-29 02:58:58,502 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:58:58,502 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663214171]
[2023-11-29 02:58:58,502 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663214171] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:58:58,502 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:58:58,506 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:58:58,506 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799871135]
[2023-11-29 02:58:58,506 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:58:58,509 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:58:58,509 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:58:58,512 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:58:58,512 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:58:58,513 INFO  L87              Difference]: Start difference. First operand 9275 states and 15427 transitions. Second operand  has 5 states, 5 states have (on average 1114.8) internal successors, (5574), 5 states have internal predecessors, (5574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:59:08,588 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:59:08,588 INFO  L93              Difference]: Finished difference Result 33134 states and 54858 transitions.
[2023-11-29 02:59:08,588 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:59:08,589 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1114.8) internal successors, (5574), 5 states have internal predecessors, (5574), 0 states have call successors, (0), 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 6125
[2023-11-29 02:59:08,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:59:08,608 INFO  L225             Difference]: With dead ends: 33134
[2023-11-29 02:59:08,608 INFO  L226             Difference]: Without dead ends: 17378
[2023-11-29 02:59:08,617 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12249 GetRequests, 12240 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:59:08,618 INFO  L413           NwaCegarLoop]: 22833 mSDtfsCounter, 35972 mSDsluCounter, 21955 mSDsCounter, 0 mSdLazyCounter, 10785 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35972 SdHoareTripleChecker+Valid, 44788 SdHoareTripleChecker+Invalid, 11516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:59:08,618 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35972 Valid, 44788 Invalid, 11516 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10785 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time]
[2023-11-29 02:59:08,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17378 states.
[2023-11-29 02:59:08,733 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17378 to 9280.
[2023-11-29 02:59:08,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9280 states, 9279 states have (on average 1.663325789416963) internal successors, (15434), 9279 states have internal predecessors, (15434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:59:08,756 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9280 states to 9280 states and 15434 transitions.
[2023-11-29 02:59:08,757 INFO  L78                 Accepts]: Start accepts. Automaton has 9280 states and 15434 transitions. Word has length 6125
[2023-11-29 02:59:08,760 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:59:08,761 INFO  L495      AbstractCegarLoop]: Abstraction has 9280 states and 15434 transitions.
[2023-11-29 02:59:08,762 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1114.8) internal successors, (5574), 5 states have internal predecessors, (5574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:59:08,762 INFO  L276                IsEmpty]: Start isEmpty. Operand 9280 states and 15434 transitions.
[2023-11-29 02:59:08,914 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6127
[2023-11-29 02:59:08,914 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:59:08,915 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:59:08,991 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 02:59:09,116 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:59:09,116 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:59:09,116 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:59:09,117 INFO  L85        PathProgramCache]: Analyzing trace with hash -208298516, now seen corresponding path program 1 times
[2023-11-29 02:59:09,118 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:59:09,118 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381135421]
[2023-11-29 02:59:09,119 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:59:09,119 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:59:09,793 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:59:09,793 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105348958]
[2023-11-29 02:59:09,795 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:59:09,795 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:59:09,795 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:59:09,796 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:59:09,797 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 02:59:16,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:59:16,850 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28925 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:59:16,921 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:59:19,369 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 58 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:59:19,369 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:59:19,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked.
[2023-11-29 02:59:19,555 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:59:19,555 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381135421]
[2023-11-29 02:59:19,555 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:59:19,555 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105348958]
[2023-11-29 02:59:19,555 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105348958] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:59:19,555 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:59:19,559 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:59:19,559 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933472240]
[2023-11-29 02:59:19,559 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:59:19,562 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:59:19,562 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:59:19,564 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:59:19,564 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:59:19,565 INFO  L87              Difference]: Start difference. First operand 9280 states and 15434 transitions. Second operand  has 5 states, 5 states have (on average 1115.8) internal successors, (5579), 5 states have internal predecessors, (5579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:59:30,061 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:59:30,061 INFO  L93              Difference]: Finished difference Result 33161 states and 54897 transitions.
[2023-11-29 02:59:30,061 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:59:30,063 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1115.8) internal successors, (5579), 5 states have internal predecessors, (5579), 0 states have call successors, (0), 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 6126
[2023-11-29 02:59:30,067 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:59:30,076 INFO  L225             Difference]: With dead ends: 33161
[2023-11-29 02:59:30,076 INFO  L226             Difference]: Without dead ends: 17382
[2023-11-29 02:59:30,080 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12251 GetRequests, 12242 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:59:30,081 INFO  L413           NwaCegarLoop]: 22820 mSDtfsCounter, 35959 mSDsluCounter, 21949 mSDsCounter, 0 mSdLazyCounter, 10781 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35959 SdHoareTripleChecker+Valid, 44769 SdHoareTripleChecker+Invalid, 11512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time
[2023-11-29 02:59:30,081 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35959 Valid, 44769 Invalid, 11512 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10781 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time]
[2023-11-29 02:59:30,094 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17382 states.
[2023-11-29 02:59:30,172 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17382 to 9285.
[2023-11-29 02:59:30,181 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9285 states, 9284 states have (on average 1.6631839724256785) internal successors, (15441), 9284 states have internal predecessors, (15441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:59:30,191 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9285 states to 9285 states and 15441 transitions.
[2023-11-29 02:59:30,191 INFO  L78                 Accepts]: Start accepts. Automaton has 9285 states and 15441 transitions. Word has length 6126
[2023-11-29 02:59:30,194 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:59:30,194 INFO  L495      AbstractCegarLoop]: Abstraction has 9285 states and 15441 transitions.
[2023-11-29 02:59:30,195 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1115.8) internal successors, (5579), 5 states have internal predecessors, (5579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:59:30,195 INFO  L276                IsEmpty]: Start isEmpty. Operand 9285 states and 15441 transitions.
[2023-11-29 02:59:30,354 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6128
[2023-11-29 02:59:30,355 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:59:30,356 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:59:30,432 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-11-29 02:59:30,556 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:59:30,556 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:59:30,557 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:59:30,557 INFO  L85        PathProgramCache]: Analyzing trace with hash 701684840, now seen corresponding path program 1 times
[2023-11-29 02:59:30,557 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:59:30,558 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146943685]
[2023-11-29 02:59:30,558 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:59:30,558 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:59:31,169 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:59:31,169 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547698581]
[2023-11-29 02:59:31,170 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:59:31,170 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:59:31,170 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:59:31,171 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:59:31,172 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-11-29 02:59:37,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:59:37,990 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28928 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:59:38,061 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:59:40,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 62 proven. 548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:59:40,469 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 02:59:40,657 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2023-11-29 02:59:40,657 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:59:40,658 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146943685]
[2023-11-29 02:59:40,658 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:59:40,658 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547698581]
[2023-11-29 02:59:40,658 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [547698581] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 02:59:40,658 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 02:59:40,660 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 02:59:40,660 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087018440]
[2023-11-29 02:59:40,660 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:59:40,663 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:59:40,663 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:59:40,665 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:59:40,666 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 02:59:40,667 INFO  L87              Difference]: Start difference. First operand 9285 states and 15441 transitions. Second operand  has 5 states, 5 states have (on average 1116.8) internal successors, (5584), 5 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:59:50,894 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:59:50,894 INFO  L93              Difference]: Finished difference Result 33185 states and 54931 transitions.
[2023-11-29 02:59:50,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:59:50,895 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1116.8) internal successors, (5584), 5 states have internal predecessors, (5584), 0 states have call successors, (0), 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 6127
[2023-11-29 02:59:50,900 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:59:50,913 INFO  L225             Difference]: With dead ends: 33185
[2023-11-29 02:59:50,913 INFO  L226             Difference]: Without dead ends: 17386
[2023-11-29 02:59:50,921 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12253 GetRequests, 12244 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 02:59:50,921 INFO  L413           NwaCegarLoop]: 22807 mSDtfsCounter, 35971 mSDsluCounter, 21942 mSDsCounter, 0 mSdLazyCounter, 10777 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35971 SdHoareTripleChecker+Valid, 44749 SdHoareTripleChecker+Invalid, 11508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:59:50,921 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35971 Valid, 44749 Invalid, 11508 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10777 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time]
[2023-11-29 02:59:50,936 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17386 states.
[2023-11-29 02:59:51,025 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17386 to 9290.
[2023-11-29 02:59:51,034 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9290 states, 9289 states have (on average 1.6630423081063623) internal successors, (15448), 9289 states have internal predecessors, (15448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:59:51,044 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9290 states to 9290 states and 15448 transitions.
[2023-11-29 02:59:51,044 INFO  L78                 Accepts]: Start accepts. Automaton has 9290 states and 15448 transitions. Word has length 6127
[2023-11-29 02:59:51,048 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:59:51,048 INFO  L495      AbstractCegarLoop]: Abstraction has 9290 states and 15448 transitions.
[2023-11-29 02:59:51,049 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1116.8) internal successors, (5584), 5 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:59:51,049 INFO  L276                IsEmpty]: Start isEmpty. Operand 9290 states and 15448 transitions.
[2023-11-29 02:59:51,201 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6129
[2023-11-29 02:59:51,201 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:59:51,202 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:59:51,277 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-11-29 02:59:51,402 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:59:51,403 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:59:51,403 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:59:51,404 INFO  L85        PathProgramCache]: Analyzing trace with hash 753077304, now seen corresponding path program 1 times
[2023-11-29 02:59:51,404 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:59:51,404 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946923598]
[2023-11-29 02:59:51,405 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:59:51,406 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:59:52,032 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:59:52,032 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836455395]
[2023-11-29 02:59:52,033 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:59:52,033 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:59:52,033 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:59:52,034 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:59:52,035 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-11-29 02:59:58,710 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:59:58,896 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28931 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:59:58,970 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:00:01,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 66 proven. 544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:00:01,417 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 03:00:01,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked.
[2023-11-29 03:00:01,617 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:00:01,617 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946923598]
[2023-11-29 03:00:01,617 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:00:01,617 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836455395]
[2023-11-29 03:00:01,617 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836455395] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 03:00:01,617 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 03:00:01,621 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 03:00:01,621 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544350849]
[2023-11-29 03:00:01,621 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:00:01,623 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 03:00:01,624 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:00:01,626 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 03:00:01,626 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:00:01,627 INFO  L87              Difference]: Start difference. First operand 9290 states and 15448 transitions. Second operand  has 5 states, 5 states have (on average 1117.8) internal successors, (5589), 5 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:00:13,381 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:00:13,381 INFO  L93              Difference]: Finished difference Result 33209 states and 54965 transitions.
[2023-11-29 03:00:13,381 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 03:00:13,382 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1117.8) internal successors, (5589), 5 states have internal predecessors, (5589), 0 states have call successors, (0), 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 6128
[2023-11-29 03:00:13,388 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:00:13,402 INFO  L225             Difference]: With dead ends: 33209
[2023-11-29 03:00:13,402 INFO  L226             Difference]: Without dead ends: 17390
[2023-11-29 03:00:13,411 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12255 GetRequests, 12246 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 03:00:13,411 INFO  L413           NwaCegarLoop]: 22794 mSDtfsCounter, 24690 mSDsluCounter, 33146 mSDsCounter, 0 mSdLazyCounter, 14761 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24690 SdHoareTripleChecker+Valid, 55940 SdHoareTripleChecker+Invalid, 15492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 14761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time
[2023-11-29 03:00:13,411 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24690 Valid, 55940 Invalid, 15492 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 14761 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time]
[2023-11-29 03:00:13,428 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17390 states.
[2023-11-29 03:00:13,523 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17390 to 9295.
[2023-11-29 03:00:13,532 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9295 states, 9294 states have (on average 1.6629007962126103) internal successors, (15455), 9294 states have internal predecessors, (15455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:00:13,543 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 15455 transitions.
[2023-11-29 03:00:13,543 INFO  L78                 Accepts]: Start accepts. Automaton has 9295 states and 15455 transitions. Word has length 6128
[2023-11-29 03:00:13,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:00:13,546 INFO  L495      AbstractCegarLoop]: Abstraction has 9295 states and 15455 transitions.
[2023-11-29 03:00:13,547 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1117.8) internal successors, (5589), 5 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:00:13,548 INFO  L276                IsEmpty]: Start isEmpty. Operand 9295 states and 15455 transitions.
[2023-11-29 03:00:13,699 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6130
[2023-11-29 03:00:13,699 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:00:13,700 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 03:00:13,777 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-11-29 03:00:13,901 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:00:13,901 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:00:13,901 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:00:13,902 INFO  L85        PathProgramCache]: Analyzing trace with hash 1394775836, now seen corresponding path program 1 times
[2023-11-29 03:00:13,902 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:00:13,902 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631514055]
[2023-11-29 03:00:13,903 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:00:13,903 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:00:14,596 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:00:14,596 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357140858]
[2023-11-29 03:00:14,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:00:14,597 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:00:14,597 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:00:14,598 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:00:14,599 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-11-29 03:00:21,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:00:21,446 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28934 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 03:00:21,516 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:00:23,941 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 70 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:00:23,941 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 03:00:24,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked.
[2023-11-29 03:00:24,169 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:00:24,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631514055]
[2023-11-29 03:00:24,169 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:00:24,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357140858]
[2023-11-29 03:00:24,169 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [357140858] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 03:00:24,169 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 03:00:24,173 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 03:00:24,173 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278257421]
[2023-11-29 03:00:24,173 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:00:24,177 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 03:00:24,177 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:00:24,179 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 03:00:24,180 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:00:24,181 INFO  L87              Difference]: Start difference. First operand 9295 states and 15455 transitions. Second operand  has 5 states, 5 states have (on average 1118.8) internal successors, (5594), 5 states have internal predecessors, (5594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:00:34,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:00:34,465 INFO  L93              Difference]: Finished difference Result 33233 states and 54999 transitions.
[2023-11-29 03:00:34,465 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 03:00:34,466 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1118.8) internal successors, (5594), 5 states have internal predecessors, (5594), 0 states have call successors, (0), 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 6129
[2023-11-29 03:00:34,470 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:00:34,485 INFO  L225             Difference]: With dead ends: 33233
[2023-11-29 03:00:34,485 INFO  L226             Difference]: Without dead ends: 17394
[2023-11-29 03:00:34,494 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12257 GetRequests, 12248 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 03:00:34,495 INFO  L413           NwaCegarLoop]: 22781 mSDtfsCounter, 35920 mSDsluCounter, 21931 mSDsCounter, 0 mSdLazyCounter, 10769 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35920 SdHoareTripleChecker+Valid, 44712 SdHoareTripleChecker+Invalid, 11500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time
[2023-11-29 03:00:34,495 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35920 Valid, 44712 Invalid, 11500 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10769 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time]
[2023-11-29 03:00:34,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17394 states.
[2023-11-29 03:00:34,606 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17394 to 9300.
[2023-11-29 03:00:34,615 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9300 states, 9299 states have (on average 1.6627594364985483) internal successors, (15462), 9299 states have internal predecessors, (15462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:00:34,626 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9300 states to 9300 states and 15462 transitions.
[2023-11-29 03:00:34,626 INFO  L78                 Accepts]: Start accepts. Automaton has 9300 states and 15462 transitions. Word has length 6129
[2023-11-29 03:00:34,629 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:00:34,629 INFO  L495      AbstractCegarLoop]: Abstraction has 9300 states and 15462 transitions.
[2023-11-29 03:00:34,631 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1118.8) internal successors, (5594), 5 states have internal predecessors, (5594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:00:34,631 INFO  L276                IsEmpty]: Start isEmpty. Operand 9300 states and 15462 transitions.
[2023-11-29 03:00:34,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6131
[2023-11-29 03:00:34,784 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:00:34,785 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 03:00:34,862 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2023-11-29 03:00:34,986 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2023-11-29 03:00:34,986 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:00:34,987 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:00:34,987 INFO  L85        PathProgramCache]: Analyzing trace with hash 684390532, now seen corresponding path program 1 times
[2023-11-29 03:00:34,987 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:00:34,987 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809466180]
[2023-11-29 03:00:34,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:00:34,988 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:00:35,605 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:00:35,605 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947919219]
[2023-11-29 03:00:35,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:00:35,607 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:00:35,607 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:00:35,607 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:00:35,608 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-11-29 03:00:42,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:00:42,662 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28937 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 03:00:42,732 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:00:47,223 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 74 proven. 536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:00:47,224 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 03:00:47,463 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked.
[2023-11-29 03:00:47,463 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:00:47,463 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809466180]
[2023-11-29 03:00:47,463 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:00:47,463 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947919219]
[2023-11-29 03:00:47,463 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [947919219] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 03:00:47,463 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 03:00:47,467 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 03:00:47,467 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653726152]
[2023-11-29 03:00:47,467 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:00:47,470 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 03:00:47,470 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:00:47,472 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 03:00:47,472 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2023-11-29 03:00:47,473 INFO  L87              Difference]: Start difference. First operand 9300 states and 15462 transitions. Second operand  has 6 states, 6 states have (on average 933.1666666666666) internal successors, (5599), 6 states have internal predecessors, (5599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:01:06,756 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:01:06,756 INFO  L93              Difference]: Finished difference Result 41556 states and 68826 transitions.
[2023-11-29 03:01:06,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 03:01:06,758 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 933.1666666666666) internal successors, (5599), 6 states have internal predecessors, (5599), 0 states have call successors, (0), 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 6130
[2023-11-29 03:01:06,763 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:01:06,786 INFO  L225             Difference]: With dead ends: 41556
[2023-11-29 03:01:06,786 INFO  L226             Difference]: Without dead ends: 25697
[2023-11-29 03:01:06,797 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12261 GetRequests, 12248 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210
[2023-11-29 03:01:06,798 INFO  L413           NwaCegarLoop]: 22771 mSDtfsCounter, 60694 mSDsluCounter, 54312 mSDsCounter, 0 mSdLazyCounter, 22795 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60694 SdHoareTripleChecker+Valid, 77083 SdHoareTripleChecker+Invalid, 23530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 22795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time
[2023-11-29 03:01:06,798 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [60694 Valid, 77083 Invalid, 23530 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [735 Valid, 22795 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time]
[2023-11-29 03:01:06,819 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25697 states.
[2023-11-29 03:01:06,943 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25697 to 9305.
[2023-11-29 03:01:06,951 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9305 states, 9304 states have (on average 1.6626182287188307) internal successors, (15469), 9304 states have internal predecessors, (15469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:01:06,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9305 states to 9305 states and 15469 transitions.
[2023-11-29 03:01:06,962 INFO  L78                 Accepts]: Start accepts. Automaton has 9305 states and 15469 transitions. Word has length 6130
[2023-11-29 03:01:06,966 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:01:06,966 INFO  L495      AbstractCegarLoop]: Abstraction has 9305 states and 15469 transitions.
[2023-11-29 03:01:06,967 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 933.1666666666666) internal successors, (5599), 6 states have internal predecessors, (5599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:01:06,967 INFO  L276                IsEmpty]: Start isEmpty. Operand 9305 states and 15469 transitions.
[2023-11-29 03:01:07,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6132
[2023-11-29 03:01:07,120 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:01:07,121 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 03:01:07,199 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-11-29 03:01:07,322 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2023-11-29 03:01:07,322 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:01:07,322 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:01:07,323 INFO  L85        PathProgramCache]: Analyzing trace with hash 1058419664, now seen corresponding path program 1 times
[2023-11-29 03:01:07,323 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:01:07,323 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057168601]
[2023-11-29 03:01:07,324 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:01:07,324 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:01:08,018 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:01:08,018 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325592126]
[2023-11-29 03:01:08,020 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:01:08,020 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:01:08,020 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:01:08,021 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:01:08,022 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-11-29 03:01:14,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:01:14,929 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28940 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 03:01:15,004 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:01:17,506 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 78 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:01:17,506 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 03:01:17,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked.
[2023-11-29 03:01:17,725 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:01:17,725 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057168601]
[2023-11-29 03:01:17,725 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:01:17,725 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325592126]
[2023-11-29 03:01:17,725 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325592126] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 03:01:17,725 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 03:01:17,727 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 03:01:17,727 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924100483]
[2023-11-29 03:01:17,728 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:01:17,730 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 03:01:17,730 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:01:17,732 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 03:01:17,732 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:01:17,734 INFO  L87              Difference]: Start difference. First operand 9305 states and 15469 transitions. Second operand  has 5 states, 5 states have (on average 1120.8) internal successors, (5604), 5 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:01:27,974 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:01:27,974 INFO  L93              Difference]: Finished difference Result 33281 states and 55067 transitions.
[2023-11-29 03:01:27,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 03:01:27,976 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1120.8) internal successors, (5604), 5 states have internal predecessors, (5604), 0 states have call successors, (0), 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 6131
[2023-11-29 03:01:27,981 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:01:27,999 INFO  L225             Difference]: With dead ends: 33281
[2023-11-29 03:01:27,999 INFO  L226             Difference]: Without dead ends: 17402
[2023-11-29 03:01:28,008 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12261 GetRequests, 12252 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 03:01:28,008 INFO  L413           NwaCegarLoop]: 22755 mSDtfsCounter, 35923 mSDsluCounter, 21918 mSDsCounter, 0 mSdLazyCounter, 10761 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35923 SdHoareTripleChecker+Valid, 44673 SdHoareTripleChecker+Invalid, 11492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2023-11-29 03:01:28,009 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35923 Valid, 44673 Invalid, 11492 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10761 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2023-11-29 03:01:28,024 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17402 states.
[2023-11-29 03:01:28,131 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17402 to 9310.
[2023-11-29 03:01:28,139 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9310 states, 9309 states have (on average 1.662477172628639) internal successors, (15476), 9309 states have internal predecessors, (15476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:01:28,150 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9310 states to 9310 states and 15476 transitions.
[2023-11-29 03:01:28,150 INFO  L78                 Accepts]: Start accepts. Automaton has 9310 states and 15476 transitions. Word has length 6131
[2023-11-29 03:01:28,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:01:28,154 INFO  L495      AbstractCegarLoop]: Abstraction has 9310 states and 15476 transitions.
[2023-11-29 03:01:28,155 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1120.8) internal successors, (5604), 5 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:01:28,155 INFO  L276                IsEmpty]: Start isEmpty. Operand 9310 states and 15476 transitions.
[2023-11-29 03:01:28,482 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6133
[2023-11-29 03:01:28,482 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:01:28,483 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]
[2023-11-29 03:01:28,562 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2023-11-29 03:01:28,684 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2023-11-29 03:01:28,684 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:01:28,685 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:01:28,686 INFO  L85        PathProgramCache]: Analyzing trace with hash -1866423600, now seen corresponding path program 1 times
[2023-11-29 03:01:28,686 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:01:28,686 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652299135]
[2023-11-29 03:01:28,687 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:01:28,687 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:01:29,400 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:01:29,400 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817496819]
[2023-11-29 03:01:29,402 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:01:29,403 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:01:29,403 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:01:29,404 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:01:29,405 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-11-29 03:01:36,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:01:36,257 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28943 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 03:01:36,329 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:01:38,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 82 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:01:38,751 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 03:01:38,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked.
[2023-11-29 03:01:38,968 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:01:38,968 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652299135]
[2023-11-29 03:01:38,968 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:01:38,968 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817496819]
[2023-11-29 03:01:38,968 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [817496819] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 03:01:38,969 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 03:01:38,972 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 03:01:38,972 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639291880]
[2023-11-29 03:01:38,972 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:01:38,975 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 03:01:38,975 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:01:38,978 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 03:01:38,978 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:01:38,979 INFO  L87              Difference]: Start difference. First operand 9310 states and 15476 transitions. Second operand  has 5 states, 5 states have (on average 1121.8) internal successors, (5609), 5 states have internal predecessors, (5609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:01:49,165 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:01:49,165 INFO  L93              Difference]: Finished difference Result 33305 states and 55101 transitions.
[2023-11-29 03:01:49,165 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 03:01:49,166 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1121.8) internal successors, (5609), 5 states have internal predecessors, (5609), 0 states have call successors, (0), 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 6132
[2023-11-29 03:01:49,171 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:01:49,185 INFO  L225             Difference]: With dead ends: 33305
[2023-11-29 03:01:49,185 INFO  L226             Difference]: Without dead ends: 17406
[2023-11-29 03:01:49,194 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12263 GetRequests, 12254 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 03:01:49,195 INFO  L413           NwaCegarLoop]: 22742 mSDtfsCounter, 35881 mSDsluCounter, 21913 mSDsCounter, 0 mSdLazyCounter, 10757 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35881 SdHoareTripleChecker+Valid, 44655 SdHoareTripleChecker+Invalid, 11488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 10757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2023-11-29 03:01:49,195 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35881 Valid, 44655 Invalid, 11488 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 10757 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2023-11-29 03:01:49,210 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17406 states.
[2023-11-29 03:01:49,310 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17406 to 9315.
[2023-11-29 03:01:49,318 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9315 states, 9314 states have (on average 1.6623362679836804) internal successors, (15483), 9314 states have internal predecessors, (15483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:01:49,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9315 states to 9315 states and 15483 transitions.
[2023-11-29 03:01:49,329 INFO  L78                 Accepts]: Start accepts. Automaton has 9315 states and 15483 transitions. Word has length 6132
[2023-11-29 03:01:49,332 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:01:49,333 INFO  L495      AbstractCegarLoop]: Abstraction has 9315 states and 15483 transitions.
[2023-11-29 03:01:49,334 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1121.8) internal successors, (5609), 5 states have internal predecessors, (5609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:01:49,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 9315 states and 15483 transitions.
[2023-11-29 03:01:49,486 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6134
[2023-11-29 03:01:49,487 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:01:49,488 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 03:01:49,564 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2023-11-29 03:01:49,688 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2023-11-29 03:01:49,689 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:01:49,689 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:01:49,690 INFO  L85        PathProgramCache]: Analyzing trace with hash 1356493444, now seen corresponding path program 1 times
[2023-11-29 03:01:49,690 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:01:49,690 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524031856]
[2023-11-29 03:01:49,691 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:01:49,691 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:01:50,316 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:01:50,316 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59211323]
[2023-11-29 03:01:50,318 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:01:50,318 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:01:50,318 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:01:50,319 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:01:50,320 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-11-29 03:01:57,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:01:57,495 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28946 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 03:01:57,572 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:02:00,438 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 86 proven. 524 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:02:00,438 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 03:02:00,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked.
[2023-11-29 03:02:00,649 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:02:00,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524031856]
[2023-11-29 03:02:00,649 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:02:00,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59211323]
[2023-11-29 03:02:00,649 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [59211323] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 03:02:00,649 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 03:02:00,652 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 03:02:00,652 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307879411]
[2023-11-29 03:02:00,652 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:02:00,654 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 03:02:00,654 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:02:00,657 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 03:02:00,657 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:02:00,658 INFO  L87              Difference]: Start difference. First operand 9315 states and 15483 transitions. Second operand  has 5 states, 5 states have (on average 1122.4) internal successors, (5612), 5 states have internal predecessors, (5612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:02:12,452 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:02:12,453 INFO  L93              Difference]: Finished difference Result 33326 states and 55130 transitions.
[2023-11-29 03:02:12,453 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 03:02:12,454 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1122.4) internal successors, (5612), 5 states have internal predecessors, (5612), 0 states have call successors, (0), 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 6133
[2023-11-29 03:02:12,457 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:02:12,467 INFO  L225             Difference]: With dead ends: 33326
[2023-11-29 03:02:12,467 INFO  L226             Difference]: Without dead ends: 17407
[2023-11-29 03:02:12,472 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12265 GetRequests, 12256 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-11-29 03:02:12,472 INFO  L413           NwaCegarLoop]: 22734 mSDtfsCounter, 24652 mSDsluCounter, 33088 mSDsCounter, 0 mSdLazyCounter, 14729 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24652 SdHoareTripleChecker+Valid, 55822 SdHoareTripleChecker+Invalid, 15460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 14729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time
[2023-11-29 03:02:12,472 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24652 Valid, 55822 Invalid, 15460 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [731 Valid, 14729 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time]
[2023-11-29 03:02:12,488 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17407 states.
[2023-11-29 03:02:12,566 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17407 to 9317.
[2023-11-29 03:02:12,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9317 states, 9316 states have (on average 1.662194074710176) internal successors, (15485), 9316 states have internal predecessors, (15485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:02:12,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9317 states to 9317 states and 15485 transitions.
[2023-11-29 03:02:12,584 INFO  L78                 Accepts]: Start accepts. Automaton has 9317 states and 15485 transitions. Word has length 6133
[2023-11-29 03:02:12,588 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:02:12,588 INFO  L495      AbstractCegarLoop]: Abstraction has 9317 states and 15485 transitions.
[2023-11-29 03:02:12,589 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1122.4) internal successors, (5612), 5 states have internal predecessors, (5612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 03:02:12,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 9317 states and 15485 transitions.
[2023-11-29 03:02:12,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6135
[2023-11-29 03:02:12,742 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:02:12,743 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 03:02:12,819 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2023-11-29 03:02:12,943 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-11-29 03:02:12,944 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:02:12,944 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:02:12,946 INFO  L85        PathProgramCache]: Analyzing trace with hash 366861046, now seen corresponding path program 1 times
[2023-11-29 03:02:12,946 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:02:12,946 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434052589]
[2023-11-29 03:02:12,946 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:02:12,947 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:02:13,567 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:02:13,568 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374391936]
[2023-11-29 03:02:13,569 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:02:13,569 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:02:13,569 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:02:13,570 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:02:13,570 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca2ff1f-d35e-4080-80be-4246c086c4e1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-11-29 03:02:19,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:02:20,162 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28949 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 03:02:20,235 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:02:22,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 88 proven. 522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:02:22,698 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 03:02:22,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 610 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked.
[2023-11-29 03:02:22,949 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:02:22,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434052589]
[2023-11-29 03:02:22,949 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:02:22,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374391936]
[2023-11-29 03:02:22,949 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [374391936] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 03:02:22,949 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 03:02:22,951 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 03:02:22,951 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335105117]
[2023-11-29 03:02:22,951 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:02:22,954 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 03:02:22,954 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:02:22,956 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 03:02:22,956 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:02:22,958 INFO  L87              Difference]: Start difference. First operand 9317 states and 15485 transitions. Second operand  has 5 states, 5 states have (on average 1123.4) internal successors, (5617), 5 states have internal predecessors, (5617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)