./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.leader_election.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_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/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_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.leader_election.2.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/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_99dc5891-3d77-4607-8b2b-1390b856ae8d/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 0ee861ec790d755a173912ecdbaf3a3505d58be8e59ff829dd03bbfd8b644b53
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 00:41:36,524 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 00:41:36,602 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 00:41:36,616 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 00:41:36,617 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 00:41:36,641 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 00:41:36,641 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 00:41:36,642 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 00:41:36,642 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 00:41:36,643 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 00:41:36,644 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 00:41:36,644 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 00:41:36,645 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 00:41:36,645 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 00:41:36,646 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 00:41:36,646 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 00:41:36,647 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 00:41:36,647 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 00:41:36,648 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 00:41:36,648 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 00:41:36,649 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 00:41:36,649 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 00:41:36,650 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 00:41:36,650 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 00:41:36,651 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 00:41:36,651 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 00:41:36,652 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 00:41:36,652 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 00:41:36,652 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 00:41:36,653 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 00:41:36,653 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 00:41:36,654 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 00:41:36,654 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 00:41:36,655 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 00:41:36,655 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 00:41:36,655 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 00:41:36,656 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 00:41:36,656 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 00:41:36,656 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 00:41:36,656 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_99dc5891-3d77-4607-8b2b-1390b856ae8d/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_99dc5891-3d77-4607-8b2b-1390b856ae8d/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 -> 0ee861ec790d755a173912ecdbaf3a3505d58be8e59ff829dd03bbfd8b644b53
[2023-11-29 00:41:36,889 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 00:41:36,910 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 00:41:36,913 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 00:41:36,914 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 00:41:36,915 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 00:41:36,916 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.leader_election.2.prop1-back-serstep.c
[2023-11-29 00:41:39,600 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 00:41:40,076 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 00:41:40,077 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.leader_election.2.prop1-back-serstep.c
[2023-11-29 00:41:40,122 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/data/d39bcd602/1a89d17cc0af405f9b03c0f1fdf28e79/FLAGe40d3e81c
[2023-11-29 00:41:40,137 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/data/d39bcd602/1a89d17cc0af405f9b03c0f1fdf28e79
[2023-11-29 00:41:40,139 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 00:41:40,141 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 00:41:40,142 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 00:41:40,142 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 00:41:40,148 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 00:41:40,148 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:40" (1/1) ...
[2023-11-29 00:41:40,149 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35047c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:40, skipping insertion in model container
[2023-11-29 00:41:40,150 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:40" (1/1) ...
[2023-11-29 00:41:40,349 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 00:41:40,646 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_99dc5891-3d77-4607-8b2b-1390b856ae8d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.leader_election.2.prop1-back-serstep.c[1183,1196]
[2023-11-29 00:41:41,795 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 00:41:41,803 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 00:41:41,812 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_99dc5891-3d77-4607-8b2b-1390b856ae8d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.leader_election.2.prop1-back-serstep.c[1183,1196]
[2023-11-29 00:41:42,784 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 00:41:42,800 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 00:41:42,800 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42 WrapperNode
[2023-11-29 00:41:42,801 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 00:41:42,802 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 00:41:42,802 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 00:41:42,802 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 00:41:42,809 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:43,084 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:45,588 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43345
[2023-11-29 00:41:45,588 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 00:41:45,589 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 00:41:45,589 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 00:41:45,589 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 00:41:45,602 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:45,602 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:46,536 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:47,105 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 00:41:47,105 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:47,105 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:47,809 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:47,984 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:48,172 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:48,303 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:48,742 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 00:41:48,743 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 00:41:48,743 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 00:41:48,743 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 00:41:48,744 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ...
[2023-11-29 00:41:48,749 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 00:41:48,761 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:41:48,773 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 00:41:48,775 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 00:41:48,808 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 00:41:48,808 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 00:41:48,808 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 00:41:48,808 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 00:41:50,755 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 00:41:50,757 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 00:42:09,746 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 00:42:10,308 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 00:42:10,308 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 00:42:10,313 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:42:10 BoogieIcfgContainer
[2023-11-29 00:42:10,313 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 00:42:10,316 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 00:42:10,316 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 00:42:10,319 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 00:42:10,320 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:41:40" (1/3) ...
[2023-11-29 00:42:10,321 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6d810d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:42:10, skipping insertion in model container
[2023-11-29 00:42:10,321 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (2/3) ...
[2023-11-29 00:42:10,321 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6d810d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:42:10, skipping insertion in model container
[2023-11-29 00:42:10,321 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:42:10" (3/3) ...
[2023-11-29 00:42:10,323 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.leader_election.2.prop1-back-serstep.c
[2023-11-29 00:42:10,342 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 00:42:10,342 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 00:42:10,525 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 00:42:10,532 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;@6a4d1fa5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 00:42:10,533 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 00:42:10,565 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 9449 states, 9447 states have (on average 1.6687837408701176) internal successors, (15765), 9448 states have internal predecessors, (15765), 0 states have call successors, (0), 0 states 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 00:42:10,636 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1087
[2023-11-29 00:42:10,636 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:42:10,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:42:10,638 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:42:10,644 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:42:10,645 INFO  L85        PathProgramCache]: Analyzing trace with hash 937681214, now seen corresponding path program 1 times
[2023-11-29 00:42:10,654 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:42:10,655 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439240362]
[2023-11-29 00:42:10,655 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:10,656 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:42:11,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:42:15,236 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 00:42:15,236 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:42:15,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439240362]
[2023-11-29 00:42:15,237 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439240362] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:42:15,237 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:42:15,238 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:42:15,239 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326800399]
[2023-11-29 00:42:15,240 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:42:15,246 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:42:15,247 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:42:15,273 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:42:15,274 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:42:15,292 INFO  L87              Difference]: Start difference. First operand  has 9449 states, 9447 states have (on average 1.6687837408701176) internal successors, (15765), 9448 states have internal predecessors, (15765), 0 states have call successors, (0), 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 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 00:42:15,860 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:42:15,860 INFO  L93              Difference]: Finished difference Result 18468 states and 30816 transitions.
[2023-11-29 00:42:15,861 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:42:15,863 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 0 states have call successors, (0), 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 1086
[2023-11-29 00:42:15,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:42:15,921 INFO  L225             Difference]: With dead ends: 18468
[2023-11-29 00:42:15,922 INFO  L226             Difference]: Without dead ends: 9449
[2023-11-29 00:42:15,936 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 00:42:15,939 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 1 mSDsluCounter, 31511 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47269 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 00:42:15,940 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47269 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:42:15,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9449 states.
[2023-11-29 00:42:16,140 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9449 to 9449.
[2023-11-29 00:42:16,161 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9449 states, 9448 states have (on average 1.6683954276037256) internal successors, (15763), 9448 states have internal predecessors, (15763), 0 states have call successors, (0), 0 states 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 00:42:16,189 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9449 states to 9449 states and 15763 transitions.
[2023-11-29 00:42:16,190 INFO  L78                 Accepts]: Start accepts. Automaton has 9449 states and 15763 transitions. Word has length 1086
[2023-11-29 00:42:16,193 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:42:16,194 INFO  L495      AbstractCegarLoop]: Abstraction has 9449 states and 15763 transitions.
[2023-11-29 00:42:16,195 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 00:42:16,195 INFO  L276                IsEmpty]: Start isEmpty. Operand 9449 states and 15763 transitions.
[2023-11-29 00:42:16,269 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1088
[2023-11-29 00:42:16,269 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:42:16,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:42:16,270 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 00:42:16,270 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:42:16,271 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:42:16,271 INFO  L85        PathProgramCache]: Analyzing trace with hash -994921998, now seen corresponding path program 1 times
[2023-11-29 00:42:16,272 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:42:16,272 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12091219]
[2023-11-29 00:42:16,272 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:16,273 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:42:16,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:42:18,939 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 00:42:18,939 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:42:18,940 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12091219]
[2023-11-29 00:42:18,940 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12091219] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:42:18,940 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:42:18,940 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:42:18,941 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496719972]
[2023-11-29 00:42:18,941 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:42:18,944 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:42:18,944 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:42:18,946 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:42:18,946 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:42:18,947 INFO  L87              Difference]: Start difference. First operand 9449 states and 15763 transitions. Second operand  has 4 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states 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 00:42:19,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:42:19,411 INFO  L93              Difference]: Finished difference Result 18471 states and 30814 transitions.
[2023-11-29 00:42:19,411 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:42:19,412 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 0 states have call successors, (0), 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 1087
[2023-11-29 00:42:19,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:42:19,452 INFO  L225             Difference]: With dead ends: 18471
[2023-11-29 00:42:19,452 INFO  L226             Difference]: Without dead ends: 9452
[2023-11-29 00:42:19,458 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 00:42:19,459 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 1 mSDsluCounter, 31509 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47267 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 00:42:19,460 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47267 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:42:19,474 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9452 states.
[2023-11-29 00:42:19,583 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9452 to 9451.
[2023-11-29 00:42:19,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9451 states, 9450 states have (on average 1.6682539682539683) internal successors, (15765), 9450 states have internal predecessors, (15765), 0 states have call successors, (0), 0 states 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 00:42:19,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9451 states to 9451 states and 15765 transitions.
[2023-11-29 00:42:19,613 INFO  L78                 Accepts]: Start accepts. Automaton has 9451 states and 15765 transitions. Word has length 1087
[2023-11-29 00:42:19,614 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:42:19,614 INFO  L495      AbstractCegarLoop]: Abstraction has 9451 states and 15765 transitions.
[2023-11-29 00:42:19,615 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states 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 00:42:19,615 INFO  L276                IsEmpty]: Start isEmpty. Operand 9451 states and 15765 transitions.
[2023-11-29 00:42:19,624 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1089
[2023-11-29 00:42:19,624 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:42:19,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:42:19,625 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 00:42:19,625 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:42:19,626 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:42:19,627 INFO  L85        PathProgramCache]: Analyzing trace with hash -988236840, now seen corresponding path program 1 times
[2023-11-29 00:42:19,627 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:42:19,627 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77929560]
[2023-11-29 00:42:19,628 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:19,628 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:42:19,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:42:21,234 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 00:42:21,235 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:42:21,235 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77929560]
[2023-11-29 00:42:21,235 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77929560] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:42:21,235 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:42:21,236 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:42:21,236 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043904172]
[2023-11-29 00:42:21,236 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:42:21,239 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:42:21,239 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:42:21,240 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:42:21,241 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:42:21,241 INFO  L87              Difference]: Start difference. First operand 9451 states and 15765 transitions. Second operand  has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states 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 00:42:21,830 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:42:21,830 INFO  L93              Difference]: Finished difference Result 27487 states and 45854 transitions.
[2023-11-29 00:42:21,831 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 00:42:21,831 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 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 1088
[2023-11-29 00:42:21,833 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:42:21,887 INFO  L225             Difference]: With dead ends: 27487
[2023-11-29 00:42:21,887 INFO  L226             Difference]: Without dead ends: 18466
[2023-11-29 00:42:21,901 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 00:42:21,902 INFO  L413           NwaCegarLoop]: 17738 mSDtfsCounter, 15036 mSDsluCounter, 33487 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15036 SdHoareTripleChecker+Valid, 51225 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:42:21,903 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15036 Valid, 51225 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 00:42:21,931 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18466 states.
[2023-11-29 00:42:22,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 9453.
[2023-11-29 00:42:22,152 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9453 states, 9452 states have (on average 1.6681125687685145) internal successors, (15767), 9452 states have internal predecessors, (15767), 0 states have call successors, (0), 0 states 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 00:42:22,169 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9453 states to 9453 states and 15767 transitions.
[2023-11-29 00:42:22,170 INFO  L78                 Accepts]: Start accepts. Automaton has 9453 states and 15767 transitions. Word has length 1088
[2023-11-29 00:42:22,172 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:42:22,172 INFO  L495      AbstractCegarLoop]: Abstraction has 9453 states and 15767 transitions.
[2023-11-29 00:42:22,172 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states 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 00:42:22,172 INFO  L276                IsEmpty]: Start isEmpty. Operand 9453 states and 15767 transitions.
[2023-11-29 00:42:22,186 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1090
[2023-11-29 00:42:22,186 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:42:22,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:42:22,187 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 00:42:22,187 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:42:22,188 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:42:22,188 INFO  L85        PathProgramCache]: Analyzing trace with hash 1029342296, now seen corresponding path program 1 times
[2023-11-29 00:42:22,189 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:42:22,189 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332290812]
[2023-11-29 00:42:22,189 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:22,189 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:42:22,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:42:24,329 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 00:42:24,329 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:42:24,329 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332290812]
[2023-11-29 00:42:24,329 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332290812] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:42:24,329 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:42:24,330 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 00:42:24,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876979316]
[2023-11-29 00:42:24,330 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:42:24,332 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 00:42:24,332 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:42:24,333 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 00:42:24,334 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 00:42:24,334 INFO  L87              Difference]: Start difference. First operand 9453 states and 15767 transitions. Second operand  has 6 states, 6 states have (on average 181.5) internal successors, (1089), 5 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states 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 00:42:25,097 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:42:25,098 INFO  L93              Difference]: Finished difference Result 28681 states and 47840 transitions.
[2023-11-29 00:42:25,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:42:25,098 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 181.5) internal successors, (1089), 5 states have internal predecessors, (1089), 0 states have call successors, (0), 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 1089
[2023-11-29 00:42:25,101 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:42:25,128 INFO  L225             Difference]: With dead ends: 28681
[2023-11-29 00:42:25,129 INFO  L226             Difference]: Without dead ends: 19658
[2023-11-29 00:42:25,140 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-11-29 00:42:25,141 INFO  L413           NwaCegarLoop]: 17737 mSDtfsCounter, 61772 mSDsluCounter, 46544 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61772 SdHoareTripleChecker+Valid, 64281 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:42:25,142 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [61772 Valid, 64281 Invalid, 20 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:42:25,171 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19658 states.
[2023-11-29 00:42:25,450 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19658 to 10641.
[2023-11-29 00:42:25,466 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10641 states, 10640 states have (on average 1.667951127819549) internal successors, (17747), 10640 states have internal predecessors, (17747), 0 states have call successors, (0), 0 states 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 00:42:25,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10641 states to 10641 states and 17747 transitions.
[2023-11-29 00:42:25,489 INFO  L78                 Accepts]: Start accepts. Automaton has 10641 states and 17747 transitions. Word has length 1089
[2023-11-29 00:42:25,491 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:42:25,491 INFO  L495      AbstractCegarLoop]: Abstraction has 10641 states and 17747 transitions.
[2023-11-29 00:42:25,492 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 181.5) internal successors, (1089), 5 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states 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 00:42:25,492 INFO  L276                IsEmpty]: Start isEmpty. Operand 10641 states and 17747 transitions.
[2023-11-29 00:42:25,907 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-11-29 00:42:25,908 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:42:25,911 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 00:42:25,911 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 00:42:25,912 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:42:25,912 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:42:25,914 INFO  L85        PathProgramCache]: Analyzing trace with hash -346094520, now seen corresponding path program 1 times
[2023-11-29 00:42:25,914 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:42:25,914 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371124595]
[2023-11-29 00:42:25,915 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:25,915 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:42:26,647 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:42:26,648 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637767470]
[2023-11-29 00:42:26,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:26,650 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:42:26,650 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:42:26,656 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:42:26,657 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 00:42:35,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:42:35,475 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35219 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 00:42:35,633 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:42:35,855 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:42:35,855 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:42:35,855 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:42:35,855 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371124595]
[2023-11-29 00:42:35,855 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:42:35,855 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637767470]
[2023-11-29 00:42:35,856 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [637767470] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:42:35,856 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:42:35,858 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:42:35,858 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502281773]
[2023-11-29 00:42:35,858 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:42:35,865 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:42:35,865 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:42:35,871 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:42:35,871 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:42:35,873 INFO  L87              Difference]: Start difference. First operand 10641 states and 17747 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:42:36,103 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:42:36,103 INFO  L93              Difference]: Finished difference Result 19674 states and 32814 transitions.
[2023-11-29 00:42:36,104 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:42:36,106 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 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 7000
[2023-11-29 00:42:36,109 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:42:36,137 INFO  L225             Difference]: With dead ends: 19674
[2023-11-29 00:42:36,138 INFO  L226             Difference]: Without dead ends: 10651
[2023-11-29 00:42:36,149 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 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 00:42:36,151 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 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 00:42:36,151 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:42:36,170 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10651 states.
[2023-11-29 00:42:36,309 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10651 to 10643.
[2023-11-29 00:42:36,324 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10643 states, 10642 states have (on average 1.667825596692351) internal successors, (17749), 10642 states have internal predecessors, (17749), 0 states have call successors, (0), 0 states 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 00:42:36,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10643 states to 10643 states and 17749 transitions.
[2023-11-29 00:42:36,341 INFO  L78                 Accepts]: Start accepts. Automaton has 10643 states and 17749 transitions. Word has length 7000
[2023-11-29 00:42:36,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:42:36,345 INFO  L495      AbstractCegarLoop]: Abstraction has 10643 states and 17749 transitions.
[2023-11-29 00:42:36,347 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:42:36,348 INFO  L276                IsEmpty]: Start isEmpty. Operand 10643 states and 17749 transitions.
[2023-11-29 00:42:36,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-11-29 00:42:36,921 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:42:36,926 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 00:42:37,022 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 00:42:37,126 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:42:37,127 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:42:37,129 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:42:37,131 INFO  L85        PathProgramCache]: Analyzing trace with hash 868051386, now seen corresponding path program 1 times
[2023-11-29 00:42:37,131 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:42:37,131 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345796768]
[2023-11-29 00:42:37,132 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:37,132 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:42:37,959 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:42:37,959 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361556507]
[2023-11-29 00:42:37,960 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:37,960 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:42:37,961 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:42:37,962 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:42:37,964 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 00:42:46,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:42:46,673 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35220 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 00:42:46,811 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:42:47,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:42:47,027 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:42:47,027 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:42:47,027 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345796768]
[2023-11-29 00:42:47,027 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:42:47,027 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361556507]
[2023-11-29 00:42:47,028 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361556507] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:42:47,028 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:42:47,030 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:42:47,030 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694098334]
[2023-11-29 00:42:47,030 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:42:47,038 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:42:47,038 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:42:47,046 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:42:47,046 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:42:47,049 INFO  L87              Difference]: Start difference. First operand 10643 states and 17749 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:42:47,332 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:42:47,332 INFO  L93              Difference]: Finished difference Result 19677 states and 32816 transitions.
[2023-11-29 00:42:47,333 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:42:47,336 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 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 7000
[2023-11-29 00:42:47,338 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:42:47,371 INFO  L225             Difference]: With dead ends: 19677
[2023-11-29 00:42:47,371 INFO  L226             Difference]: Without dead ends: 10652
[2023-11-29 00:42:47,383 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 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 00:42:47,384 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 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 00:42:47,384 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:42:47,400 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10652 states.
[2023-11-29 00:42:47,553 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10652 to 10644.
[2023-11-29 00:42:47,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10644 states, 10643 states have (on average 1.6677628488208212) internal successors, (17750), 10643 states have internal predecessors, (17750), 0 states have call successors, (0), 0 states 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 00:42:47,583 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10644 states to 10644 states and 17750 transitions.
[2023-11-29 00:42:47,583 INFO  L78                 Accepts]: Start accepts. Automaton has 10644 states and 17750 transitions. Word has length 7000
[2023-11-29 00:42:47,587 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:42:47,587 INFO  L495      AbstractCegarLoop]: Abstraction has 10644 states and 17750 transitions.
[2023-11-29 00:42:47,589 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:42:47,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 10644 states and 17750 transitions.
[2023-11-29 00:42:47,991 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-11-29 00:42:47,992 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:42:47,997 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 00:42:48,091 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 00:42:48,199 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-29 00:42:48,200 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:42:48,202 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:42:48,204 INFO  L85        PathProgramCache]: Analyzing trace with hash 2006041644, now seen corresponding path program 1 times
[2023-11-29 00:42:48,204 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:42:48,204 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466321765]
[2023-11-29 00:42:48,204 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:48,205 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:42:48,802 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:42:48,803 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992653808]
[2023-11-29 00:42:48,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:48,804 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:42:48,804 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:42:48,805 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:42:48,806 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 00:42:57,119 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:42:57,349 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35221 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 00:42:57,477 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:42:57,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:42:57,616 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:42:57,616 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:42:57,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466321765]
[2023-11-29 00:42:57,616 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:42:57,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992653808]
[2023-11-29 00:42:57,617 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [992653808] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:42:57,617 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:42:57,619 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:42:57,619 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878674695]
[2023-11-29 00:42:57,619 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:42:57,625 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:42:57,625 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:42:57,630 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:42:57,630 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:42:57,632 INFO  L87              Difference]: Start difference. First operand 10644 states and 17750 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:42:57,842 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:42:57,842 INFO  L93              Difference]: Finished difference Result 19679 states and 32818 transitions.
[2023-11-29 00:42:57,843 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:42:57,844 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 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 7000
[2023-11-29 00:42:57,846 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:42:57,861 INFO  L225             Difference]: With dead ends: 19679
[2023-11-29 00:42:57,861 INFO  L226             Difference]: Without dead ends: 10653
[2023-11-29 00:42:57,869 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 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 00:42:57,870 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 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 00:42:57,870 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:42:57,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10653 states.
[2023-11-29 00:42:57,983 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10653 to 10645.
[2023-11-29 00:42:57,993 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10645 states, 10644 states have (on average 1.6677001127395716) internal successors, (17751), 10644 states have internal predecessors, (17751), 0 states have call successors, (0), 0 states 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 00:42:58,006 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10645 states to 10645 states and 17751 transitions.
[2023-11-29 00:42:58,006 INFO  L78                 Accepts]: Start accepts. Automaton has 10645 states and 17751 transitions. Word has length 7000
[2023-11-29 00:42:58,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:42:58,008 INFO  L495      AbstractCegarLoop]: Abstraction has 10645 states and 17751 transitions.
[2023-11-29 00:42:58,010 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:42:58,010 INFO  L276                IsEmpty]: Start isEmpty. Operand 10645 states and 17751 transitions.
[2023-11-29 00:42:58,349 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-11-29 00:42:58,350 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:42:58,353 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:42:58,446 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 00:42:58,553 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:42:58,554 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:42:58,556 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:42:58,558 INFO  L85        PathProgramCache]: Analyzing trace with hash -634389602, now seen corresponding path program 1 times
[2023-11-29 00:42:58,558 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:42:58,558 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289474168]
[2023-11-29 00:42:58,559 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:58,559 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:42:59,138 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:42:59,138 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130059037]
[2023-11-29 00:42:59,140 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:42:59,140 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:42:59,140 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:42:59,141 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:42:59,142 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 00:43:07,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:43:07,486 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35222 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 00:43:07,616 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:43:07,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:43:07,762 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:43:07,762 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:43:07,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289474168]
[2023-11-29 00:43:07,762 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:43:07,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130059037]
[2023-11-29 00:43:07,762 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [130059037] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:43:07,762 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:43:07,765 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:43:07,765 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763865042]
[2023-11-29 00:43:07,765 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:43:07,771 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:43:07,771 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:43:07,776 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:43:07,777 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:43:07,779 INFO  L87              Difference]: Start difference. First operand 10645 states and 17751 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:08,129 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:43:08,130 INFO  L93              Difference]: Finished difference Result 19681 states and 32820 transitions.
[2023-11-29 00:43:08,130 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:43:08,131 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 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 7000
[2023-11-29 00:43:08,133 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:43:08,140 INFO  L225             Difference]: With dead ends: 19681
[2023-11-29 00:43:08,140 INFO  L226             Difference]: Without dead ends: 10654
[2023-11-29 00:43:08,146 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 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 00:43:08,147 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:43:08,147 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:43:08,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10654 states.
[2023-11-29 00:43:08,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10654 to 10646.
[2023-11-29 00:43:08,254 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10646 states, 10645 states have (on average 1.6676373884452795) internal successors, (17752), 10645 states have internal predecessors, (17752), 0 states have call successors, (0), 0 states 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 00:43:08,267 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 17752 transitions.
[2023-11-29 00:43:08,267 INFO  L78                 Accepts]: Start accepts. Automaton has 10646 states and 17752 transitions. Word has length 7000
[2023-11-29 00:43:08,269 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:43:08,269 INFO  L495      AbstractCegarLoop]: Abstraction has 10646 states and 17752 transitions.
[2023-11-29 00:43:08,271 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:08,271 INFO  L276                IsEmpty]: Start isEmpty. Operand 10646 states and 17752 transitions.
[2023-11-29 00:43:08,470 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-11-29 00:43:08,470 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:43:08,473 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 00:43:08,569 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 00:43:08,674 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:43:08,675 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:43:08,675 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:43:08,677 INFO  L85        PathProgramCache]: Analyzing trace with hash -1725466352, now seen corresponding path program 1 times
[2023-11-29 00:43:08,678 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:43:08,678 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387596958]
[2023-11-29 00:43:08,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:08,678 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:43:09,247 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:43:09,248 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433411013]
[2023-11-29 00:43:09,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:09,249 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:43:09,249 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:43:09,250 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:43:09,251 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 00:43:17,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:43:17,993 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35223 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 00:43:18,094 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:43:18,240 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:43:18,240 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:43:18,240 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:43:18,240 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387596958]
[2023-11-29 00:43:18,241 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:43:18,241 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433411013]
[2023-11-29 00:43:18,241 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [433411013] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:43:18,241 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:43:18,243 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:43:18,243 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867024442]
[2023-11-29 00:43:18,243 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:43:18,248 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:43:18,249 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:43:18,254 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:43:18,254 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:43:18,256 INFO  L87              Difference]: Start difference. First operand 10646 states and 17752 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:18,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:43:18,469 INFO  L93              Difference]: Finished difference Result 19683 states and 32822 transitions.
[2023-11-29 00:43:18,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:43:18,471 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 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 7000
[2023-11-29 00:43:18,473 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:43:18,482 INFO  L225             Difference]: With dead ends: 19683
[2023-11-29 00:43:18,482 INFO  L226             Difference]: Without dead ends: 10655
[2023-11-29 00:43:18,488 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 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 00:43:18,488 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 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 00:43:18,489 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:43:18,502 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10655 states.
[2023-11-29 00:43:18,586 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10655 to 10647.
[2023-11-29 00:43:18,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10647 states, 10646 states have (on average 1.6675746759346233) internal successors, (17753), 10646 states have internal predecessors, (17753), 0 states have call successors, (0), 0 states 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 00:43:18,610 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10647 states to 10647 states and 17753 transitions.
[2023-11-29 00:43:18,610 INFO  L78                 Accepts]: Start accepts. Automaton has 10647 states and 17753 transitions. Word has length 7000
[2023-11-29 00:43:18,612 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:43:18,612 INFO  L495      AbstractCegarLoop]: Abstraction has 10647 states and 17753 transitions.
[2023-11-29 00:43:18,614 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:18,614 INFO  L276                IsEmpty]: Start isEmpty. Operand 10647 states and 17753 transitions.
[2023-11-29 00:43:18,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-11-29 00:43:18,816 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:43:18,820 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 00:43:18,919 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 00:43:19,020 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:43:19,021 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:43:19,021 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:43:19,023 INFO  L85        PathProgramCache]: Analyzing trace with hash -689528446, now seen corresponding path program 1 times
[2023-11-29 00:43:19,023 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:43:19,024 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220987711]
[2023-11-29 00:43:19,024 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:19,024 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:43:19,677 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:43:19,678 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193149953]
[2023-11-29 00:43:19,679 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:19,679 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:43:19,679 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:43:19,680 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:43:19,682 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 00:43:28,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:43:28,459 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35224 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 00:43:28,553 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:43:28,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:43:28,679 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:43:28,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:43:28,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220987711]
[2023-11-29 00:43:28,679 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:43:28,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193149953]
[2023-11-29 00:43:28,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [193149953] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:43:28,679 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:43:28,681 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:43:28,681 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945918404]
[2023-11-29 00:43:28,681 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:43:28,686 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:43:28,686 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:43:28,691 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:43:28,691 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:43:28,693 INFO  L87              Difference]: Start difference. First operand 10647 states and 17753 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:28,894 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:43:28,894 INFO  L93              Difference]: Finished difference Result 19685 states and 32824 transitions.
[2023-11-29 00:43:28,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:43:28,896 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 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 7000
[2023-11-29 00:43:28,898 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:43:28,905 INFO  L225             Difference]: With dead ends: 19685
[2023-11-29 00:43:28,905 INFO  L226             Difference]: Without dead ends: 10656
[2023-11-29 00:43:28,910 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 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 00:43:28,910 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 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 00:43:28,911 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:43:28,922 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10656 states.
[2023-11-29 00:43:28,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 10648.
[2023-11-29 00:43:29,006 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10648 states, 10647 states have (on average 1.6675119752042828) internal successors, (17754), 10647 states have internal predecessors, (17754), 0 states have call successors, (0), 0 states 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 00:43:29,018 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10648 states to 10648 states and 17754 transitions.
[2023-11-29 00:43:29,018 INFO  L78                 Accepts]: Start accepts. Automaton has 10648 states and 17754 transitions. Word has length 7000
[2023-11-29 00:43:29,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:43:29,020 INFO  L495      AbstractCegarLoop]: Abstraction has 10648 states and 17754 transitions.
[2023-11-29 00:43:29,022 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:29,022 INFO  L276                IsEmpty]: Start isEmpty. Operand 10648 states and 17754 transitions.
[2023-11-29 00:43:29,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-11-29 00:43:29,213 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:43:29,216 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 00:43:29,313 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 00:43:29,417 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 00:43:29,417 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:43:29,418 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:43:29,420 INFO  L85        PathProgramCache]: Analyzing trace with hash 263756788, now seen corresponding path program 1 times
[2023-11-29 00:43:29,420 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:43:29,420 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206049330]
[2023-11-29 00:43:29,421 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:29,421 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:43:29,995 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:43:29,995 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231641450]
[2023-11-29 00:43:29,996 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:29,996 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:43:29,997 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:43:29,997 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:43:29,998 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 00:43:38,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:43:38,831 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35225 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 00:43:38,927 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:43:39,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:43:39,040 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:43:39,040 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:43:39,040 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206049330]
[2023-11-29 00:43:39,040 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:43:39,040 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231641450]
[2023-11-29 00:43:39,040 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231641450] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:43:39,041 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:43:39,042 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:43:39,042 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360801871]
[2023-11-29 00:43:39,043 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:43:39,048 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:43:39,049 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:43:39,054 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:43:39,054 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:43:39,056 INFO  L87              Difference]: Start difference. First operand 10648 states and 17754 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:39,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:43:39,258 INFO  L93              Difference]: Finished difference Result 19687 states and 32826 transitions.
[2023-11-29 00:43:39,259 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:43:39,260 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 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 7000
[2023-11-29 00:43:39,262 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:43:39,269 INFO  L225             Difference]: With dead ends: 19687
[2023-11-29 00:43:39,269 INFO  L226             Difference]: Without dead ends: 10657
[2023-11-29 00:43:39,275 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 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 00:43:39,275 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 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 00:43:39,275 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:43:39,287 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10657 states.
[2023-11-29 00:43:39,363 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10657 to 10649.
[2023-11-29 00:43:39,372 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10649 states, 10648 states have (on average 1.6674492862509391) internal successors, (17755), 10648 states have internal predecessors, (17755), 0 states have call successors, (0), 0 states 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 00:43:39,384 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10649 states to 10649 states and 17755 transitions.
[2023-11-29 00:43:39,384 INFO  L78                 Accepts]: Start accepts. Automaton has 10649 states and 17755 transitions. Word has length 7000
[2023-11-29 00:43:39,386 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:43:39,386 INFO  L495      AbstractCegarLoop]: Abstraction has 10649 states and 17755 transitions.
[2023-11-29 00:43:39,387 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:39,388 INFO  L276                IsEmpty]: Start isEmpty. Operand 10649 states and 17755 transitions.
[2023-11-29 00:43:39,690 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-11-29 00:43:39,691 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:43:39,694 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 00:43:39,791 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 00:43:39,894 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 00:43:39,895 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:43:39,895 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:43:39,897 INFO  L85        PathProgramCache]: Analyzing trace with hash 224686950, now seen corresponding path program 1 times
[2023-11-29 00:43:39,898 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:43:39,898 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323356621]
[2023-11-29 00:43:39,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:39,898 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:43:40,494 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:43:40,494 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039322698]
[2023-11-29 00:43:40,495 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:40,495 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:43:40,495 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:43:40,496 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:43:40,497 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 00:43:49,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:43:49,232 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35226 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 00:43:49,330 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:43:49,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:43:49,460 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:43:49,460 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:43:49,461 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323356621]
[2023-11-29 00:43:49,461 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:43:49,461 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039322698]
[2023-11-29 00:43:49,461 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039322698] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:43:49,461 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:43:49,463 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:43:49,463 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632954510]
[2023-11-29 00:43:49,463 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:43:49,468 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:43:49,469 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:43:49,476 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:43:49,476 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:43:49,478 INFO  L87              Difference]: Start difference. First operand 10649 states and 17755 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:49,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:43:49,679 INFO  L93              Difference]: Finished difference Result 19689 states and 32828 transitions.
[2023-11-29 00:43:49,680 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:43:49,681 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 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 7000
[2023-11-29 00:43:49,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:43:49,690 INFO  L225             Difference]: With dead ends: 19689
[2023-11-29 00:43:49,690 INFO  L226             Difference]: Without dead ends: 10658
[2023-11-29 00:43:49,697 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 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 00:43:49,698 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 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 00:43:49,698 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:43:49,713 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10658 states.
[2023-11-29 00:43:49,794 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10658 to 10650.
[2023-11-29 00:43:49,803 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10650 states, 10649 states have (on average 1.6673866090712743) internal successors, (17756), 10649 states have internal predecessors, (17756), 0 states have call successors, (0), 0 states 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 00:43:49,816 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 17756 transitions.
[2023-11-29 00:43:49,816 INFO  L78                 Accepts]: Start accepts. Automaton has 10650 states and 17756 transitions. Word has length 7000
[2023-11-29 00:43:49,818 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:43:49,818 INFO  L495      AbstractCegarLoop]: Abstraction has 10650 states and 17756 transitions.
[2023-11-29 00:43:49,819 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 00:43:49,819 INFO  L276                IsEmpty]: Start isEmpty. Operand 10650 states and 17756 transitions.
[2023-11-29 00:43:50,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-11-29 00:43:50,107 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:43:50,110 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 00:43:50,207 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 00:43:50,310 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 00:43:50,311 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:43:50,311 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:43:50,312 INFO  L85        PathProgramCache]: Analyzing trace with hash -1602535464, now seen corresponding path program 1 times
[2023-11-29 00:43:50,312 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:43:50,312 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016552579]
[2023-11-29 00:43:50,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:50,313 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:43:50,895 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:43:50,896 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190865812]
[2023-11-29 00:43:50,897 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:43:50,897 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:43:50,897 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:43:50,898 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:43:50,899 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 00:43:59,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:43:59,508 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35227 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:43:59,628 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:44:00,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked.
[2023-11-29 00:44:00,417 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:44:00,417 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:44:00,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016552579]
[2023-11-29 00:44:00,417 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:44:00,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190865812]
[2023-11-29 00:44:00,417 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190865812] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:44:00,417 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:44:00,420 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:44:00,420 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062988915]
[2023-11-29 00:44:00,420 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:44:00,426 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:44:00,426 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:44:00,433 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:44:00,434 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:44:00,436 INFO  L87              Difference]: Start difference. First operand 10650 states and 17756 transitions. Second operand  has 7 states, 7 states have (on average 887.2857142857143) internal successors, (6211), 7 states have internal predecessors, (6211), 0 states have call successors, (0), 0 states 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 00:44:01,042 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:44:01,043 INFO  L93              Difference]: Finished difference Result 28709 states and 47868 transitions.
[2023-11-29 00:44:01,043 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:44:01,045 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 887.2857142857143) internal successors, (6211), 7 states have internal predecessors, (6211), 0 states have call successors, (0), 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 7000
[2023-11-29 00:44:01,051 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:44:01,069 INFO  L225             Difference]: With dead ends: 28709
[2023-11-29 00:44:01,069 INFO  L226             Difference]: Without dead ends: 19676
[2023-11-29 00:44:01,080 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7009 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:44:01,080 INFO  L413           NwaCegarLoop]: 17730 mSDtfsCounter, 43572 mSDsluCounter, 68929 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43572 SdHoareTripleChecker+Valid, 86659 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:44:01,081 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43572 Valid, 86659 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:44:01,099 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19676 states.
[2023-11-29 00:44:01,206 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19676 to 10652.
[2023-11-29 00:44:01,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10652 states, 10651 states have (on average 1.6672612900197166) internal successors, (17758), 10651 states have internal predecessors, (17758), 0 states have call successors, (0), 0 states 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 00:44:01,229 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 17758 transitions.
[2023-11-29 00:44:01,229 INFO  L78                 Accepts]: Start accepts. Automaton has 10652 states and 17758 transitions. Word has length 7000
[2023-11-29 00:44:01,232 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:44:01,232 INFO  L495      AbstractCegarLoop]: Abstraction has 10652 states and 17758 transitions.
[2023-11-29 00:44:01,234 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 887.2857142857143) internal successors, (6211), 7 states have internal predecessors, (6211), 0 states have call successors, (0), 0 states 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 00:44:01,234 INFO  L276                IsEmpty]: Start isEmpty. Operand 10652 states and 17758 transitions.
[2023-11-29 00:44:01,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7002
[2023-11-29 00:44:01,562 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:44:01,563 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 00:44:01,666 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 00:44:01,764 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 00:44:01,764 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:44:01,764 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:44:01,766 INFO  L85        PathProgramCache]: Analyzing trace with hash -1508948492, now seen corresponding path program 1 times
[2023-11-29 00:44:01,766 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:44:01,766 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977962650]
[2023-11-29 00:44:01,767 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:01,767 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:44:02,343 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:44:02,343 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54495078]
[2023-11-29 00:44:02,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:02,345 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:44:02,345 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:44:02,346 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:44:02,347 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 00:44:10,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:44:10,994 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35231 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:44:11,102 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:44:11,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked.
[2023-11-29 00:44:11,479 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:44:11,479 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:44:11,479 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977962650]
[2023-11-29 00:44:11,479 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:44:11,480 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54495078]
[2023-11-29 00:44:11,480 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [54495078] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:44:11,480 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:44:11,481 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:44:11,482 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939947567]
[2023-11-29 00:44:11,482 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:44:11,485 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:44:11,485 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:44:11,489 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:44:11,489 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:44:11,491 INFO  L87              Difference]: Start difference. First operand 10652 states and 17758 transitions. Second operand  has 7 states, 7 states have (on average 887.7142857142857) internal successors, (6214), 7 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states 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 00:44:12,148 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:44:12,148 INFO  L93              Difference]: Finished difference Result 28715 states and 47874 transitions.
[2023-11-29 00:44:12,149 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:44:12,150 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 887.7142857142857) internal successors, (6214), 7 states have internal predecessors, (6214), 0 states have call successors, (0), 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 7001
[2023-11-29 00:44:12,154 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:44:12,166 INFO  L225             Difference]: With dead ends: 28715
[2023-11-29 00:44:12,166 INFO  L226             Difference]: Without dead ends: 19677
[2023-11-29 00:44:12,172 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7010 GetRequests, 6998 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:44:12,173 INFO  L413           NwaCegarLoop]: 17725 mSDtfsCounter, 43571 mSDsluCounter, 68914 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43571 SdHoareTripleChecker+Valid, 86639 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:44:12,173 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43571 Valid, 86639 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:44:12,189 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19677 states.
[2023-11-29 00:44:12,282 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19677 to 10654.
[2023-11-29 00:44:12,291 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10654 states, 10653 states have (on average 1.667136018023092) internal successors, (17760), 10653 states have internal predecessors, (17760), 0 states have call successors, (0), 0 states 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 00:44:12,317 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10654 states to 10654 states and 17760 transitions.
[2023-11-29 00:44:12,317 INFO  L78                 Accepts]: Start accepts. Automaton has 10654 states and 17760 transitions. Word has length 7001
[2023-11-29 00:44:12,321 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:44:12,321 INFO  L495      AbstractCegarLoop]: Abstraction has 10654 states and 17760 transitions.
[2023-11-29 00:44:12,323 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 887.7142857142857) internal successors, (6214), 7 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states 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 00:44:12,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 10654 states and 17760 transitions.
[2023-11-29 00:44:12,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7003
[2023-11-29 00:44:12,564 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:44:12,565 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 00:44:12,665 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 00:44:12,765 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:44:12,766 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:44:12,766 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:44:12,767 INFO  L85        PathProgramCache]: Analyzing trace with hash 2142155072, now seen corresponding path program 1 times
[2023-11-29 00:44:12,767 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:44:12,768 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522360221]
[2023-11-29 00:44:12,769 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:12,769 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:44:13,336 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:44:13,336 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857214805]
[2023-11-29 00:44:13,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:13,338 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:44:13,338 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:44:13,339 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:44:13,340 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 00:44:21,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:44:21,999 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35234 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:44:22,084 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:44:22,453 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked.
[2023-11-29 00:44:22,453 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:44:22,453 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:44:22,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522360221]
[2023-11-29 00:44:22,453 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:44:22,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857214805]
[2023-11-29 00:44:22,453 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857214805] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:44:22,453 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:44:22,455 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:44:22,455 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168977694]
[2023-11-29 00:44:22,455 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:44:22,458 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:44:22,459 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:44:22,536 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:44:22,536 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:44:22,537 INFO  L87              Difference]: Start difference. First operand 10654 states and 17760 transitions. Second operand  has 7 states, 7 states have (on average 888.1428571428571) internal successors, (6217), 7 states have internal predecessors, (6217), 0 states have call successors, (0), 0 states 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 00:44:23,091 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:44:23,092 INFO  L93              Difference]: Finished difference Result 28721 states and 47880 transitions.
[2023-11-29 00:44:23,092 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:44:23,093 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 888.1428571428571) internal successors, (6217), 7 states have internal predecessors, (6217), 0 states have call successors, (0), 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 7002
[2023-11-29 00:44:23,098 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:44:23,114 INFO  L225             Difference]: With dead ends: 28721
[2023-11-29 00:44:23,114 INFO  L226             Difference]: Without dead ends: 19678
[2023-11-29 00:44:23,122 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7011 GetRequests, 6999 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:44:23,123 INFO  L413           NwaCegarLoop]: 17720 mSDtfsCounter, 43570 mSDsluCounter, 68899 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43570 SdHoareTripleChecker+Valid, 86619 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:44:23,123 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43570 Valid, 86619 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:44:23,139 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19678 states.
[2023-11-29 00:44:23,236 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19678 to 10656.
[2023-11-29 00:44:23,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10656 states, 10655 states have (on average 1.6670107930549038) internal successors, (17762), 10655 states have internal predecessors, (17762), 0 states have call successors, (0), 0 states 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 00:44:23,257 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10656 states to 10656 states and 17762 transitions.
[2023-11-29 00:44:23,257 INFO  L78                 Accepts]: Start accepts. Automaton has 10656 states and 17762 transitions. Word has length 7002
[2023-11-29 00:44:23,261 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:44:23,261 INFO  L495      AbstractCegarLoop]: Abstraction has 10656 states and 17762 transitions.
[2023-11-29 00:44:23,262 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 888.1428571428571) internal successors, (6217), 7 states have internal predecessors, (6217), 0 states have call successors, (0), 0 states 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 00:44:23,262 INFO  L276                IsEmpty]: Start isEmpty. Operand 10656 states and 17762 transitions.
[2023-11-29 00:44:23,449 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7004
[2023-11-29 00:44:23,450 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:44:23,451 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]
[2023-11-29 00:44:23,549 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 00:44:23,651 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 00:44:23,652 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:44:23,652 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:44:23,653 INFO  L85        PathProgramCache]: Analyzing trace with hash 141300878, now seen corresponding path program 1 times
[2023-11-29 00:44:23,653 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:44:23,653 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998984011]
[2023-11-29 00:44:23,654 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:23,654 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:44:24,291 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:44:24,291 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271080329]
[2023-11-29 00:44:24,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:24,293 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:44:24,293 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:44:24,294 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:44:24,296 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 00:44:32,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:44:32,857 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35237 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:44:32,946 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:44:33,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked.
[2023-11-29 00:44:33,357 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:44:33,357 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:44:33,357 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998984011]
[2023-11-29 00:44:33,357 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:44:33,357 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271080329]
[2023-11-29 00:44:33,357 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271080329] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:44:33,357 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:44:33,359 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:44:33,359 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369272412]
[2023-11-29 00:44:33,359 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:44:33,362 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:44:33,362 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:44:33,366 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:44:33,366 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:44:33,367 INFO  L87              Difference]: Start difference. First operand 10656 states and 17762 transitions. Second operand  has 7 states, 7 states have (on average 888.5714285714286) internal successors, (6220), 7 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states 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 00:44:33,988 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:44:33,989 INFO  L93              Difference]: Finished difference Result 28727 states and 47886 transitions.
[2023-11-29 00:44:33,989 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:44:33,990 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 888.5714285714286) internal successors, (6220), 7 states have internal predecessors, (6220), 0 states have call successors, (0), 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 7003
[2023-11-29 00:44:33,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:44:34,006 INFO  L225             Difference]: With dead ends: 28727
[2023-11-29 00:44:34,006 INFO  L226             Difference]: Without dead ends: 19679
[2023-11-29 00:44:34,012 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7012 GetRequests, 7000 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:44:34,013 INFO  L413           NwaCegarLoop]: 17715 mSDtfsCounter, 43569 mSDsluCounter, 68884 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43569 SdHoareTripleChecker+Valid, 86599 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:44:34,013 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43569 Valid, 86599 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:44:34,030 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19679 states.
[2023-11-29 00:44:34,125 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19679 to 10658.
[2023-11-29 00:44:34,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10658 states, 10657 states have (on average 1.6668856150886742) internal successors, (17764), 10657 states have internal predecessors, (17764), 0 states have call successors, (0), 0 states 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 00:44:34,146 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10658 states to 10658 states and 17764 transitions.
[2023-11-29 00:44:34,147 INFO  L78                 Accepts]: Start accepts. Automaton has 10658 states and 17764 transitions. Word has length 7003
[2023-11-29 00:44:34,150 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:44:34,150 INFO  L495      AbstractCegarLoop]: Abstraction has 10658 states and 17764 transitions.
[2023-11-29 00:44:34,151 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 888.5714285714286) internal successors, (6220), 7 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states 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 00:44:34,151 INFO  L276                IsEmpty]: Start isEmpty. Operand 10658 states and 17764 transitions.
[2023-11-29 00:44:34,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7005
[2023-11-29 00:44:34,340 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:44:34,342 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 00:44:34,442 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 00:44:34,542 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 00:44:34,543 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:44:34,543 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:44:34,544 INFO  L85        PathProgramCache]: Analyzing trace with hash 1283549094, now seen corresponding path program 1 times
[2023-11-29 00:44:34,544 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:44:34,544 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700552260]
[2023-11-29 00:44:34,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:34,545 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:44:35,104 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:44:35,104 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435399243]
[2023-11-29 00:44:35,105 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:35,105 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:44:35,105 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:44:35,106 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:44:35,107 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 00:44:43,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:44:43,835 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35240 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:44:43,923 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:44:44,300 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked.
[2023-11-29 00:44:44,301 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:44:44,301 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:44:44,301 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700552260]
[2023-11-29 00:44:44,301 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:44:44,301 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435399243]
[2023-11-29 00:44:44,301 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435399243] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:44:44,301 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:44:44,304 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:44:44,304 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593641204]
[2023-11-29 00:44:44,304 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:44:44,308 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:44:44,308 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:44:44,311 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:44:44,312 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:44:44,313 INFO  L87              Difference]: Start difference. First operand 10658 states and 17764 transitions. Second operand  has 7 states, 7 states have (on average 889.0) internal successors, (6223), 7 states have internal predecessors, (6223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:44:44,887 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:44:44,887 INFO  L93              Difference]: Finished difference Result 28733 states and 47892 transitions.
[2023-11-29 00:44:44,887 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:44:44,889 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 889.0) internal successors, (6223), 7 states have internal predecessors, (6223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7004
[2023-11-29 00:44:44,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:44:44,907 INFO  L225             Difference]: With dead ends: 28733
[2023-11-29 00:44:44,907 INFO  L226             Difference]: Without dead ends: 19680
[2023-11-29 00:44:44,914 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7013 GetRequests, 7001 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:44:44,914 INFO  L413           NwaCegarLoop]: 17710 mSDtfsCounter, 43568 mSDsluCounter, 68869 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43568 SdHoareTripleChecker+Valid, 86579 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:44:44,915 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43568 Valid, 86579 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:44:44,932 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19680 states.
[2023-11-29 00:44:45,031 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19680 to 10660.
[2023-11-29 00:44:45,040 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10660 states, 10659 states have (on average 1.6667604840979453) internal successors, (17766), 10659 states have internal predecessors, (17766), 0 states have call successors, (0), 0 states 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 00:44:45,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10660 states to 10660 states and 17766 transitions.
[2023-11-29 00:44:45,052 INFO  L78                 Accepts]: Start accepts. Automaton has 10660 states and 17766 transitions. Word has length 7004
[2023-11-29 00:44:45,055 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:44:45,056 INFO  L495      AbstractCegarLoop]: Abstraction has 10660 states and 17766 transitions.
[2023-11-29 00:44:45,057 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 889.0) internal successors, (6223), 7 states have internal predecessors, (6223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:44:45,057 INFO  L276                IsEmpty]: Start isEmpty. Operand 10660 states and 17766 transitions.
[2023-11-29 00:44:45,341 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7006
[2023-11-29 00:44:45,341 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:44:45,343 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 00:44:45,443 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 00:44:45,544 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 00:44:45,544 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:44:45,544 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:44:45,546 INFO  L85        PathProgramCache]: Analyzing trace with hash 661175082, now seen corresponding path program 1 times
[2023-11-29 00:44:45,546 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:44:45,546 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970729575]
[2023-11-29 00:44:45,547 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:45,547 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:44:46,154 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:44:46,154 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763891098]
[2023-11-29 00:44:46,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:46,155 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:44:46,155 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:44:46,156 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:44:46,157 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 00:44:54,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:44:54,845 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35244 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:44:54,931 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:44:55,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked.
[2023-11-29 00:44:55,291 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:44:55,291 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:44:55,291 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970729575]
[2023-11-29 00:44:55,291 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:44:55,291 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763891098]
[2023-11-29 00:44:55,291 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [763891098] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:44:55,291 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:44:55,293 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:44:55,293 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990643172]
[2023-11-29 00:44:55,293 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:44:55,296 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:44:55,297 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:44:55,300 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:44:55,300 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:44:55,302 INFO  L87              Difference]: Start difference. First operand 10660 states and 17766 transitions. Second operand  has 7 states, 7 states have (on average 889.4285714285714) internal successors, (6226), 7 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states 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 00:44:55,842 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:44:55,842 INFO  L93              Difference]: Finished difference Result 28739 states and 47898 transitions.
[2023-11-29 00:44:55,842 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:44:55,844 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 889.4285714285714) internal successors, (6226), 7 states have internal predecessors, (6226), 0 states have call successors, (0), 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 7005
[2023-11-29 00:44:55,849 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:44:55,862 INFO  L225             Difference]: With dead ends: 28739
[2023-11-29 00:44:55,862 INFO  L226             Difference]: Without dead ends: 19681
[2023-11-29 00:44:55,869 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7014 GetRequests, 7002 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:44:55,870 INFO  L413           NwaCegarLoop]: 17705 mSDtfsCounter, 43567 mSDsluCounter, 68854 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43567 SdHoareTripleChecker+Valid, 86559 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:44:55,870 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43567 Valid, 86559 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:44:55,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19681 states.
[2023-11-29 00:44:55,989 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19681 to 10662.
[2023-11-29 00:44:55,998 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10662 states, 10661 states have (on average 1.66663540005628) internal successors, (17768), 10661 states have internal predecessors, (17768), 0 states have call successors, (0), 0 states 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 00:44:56,011 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10662 states to 10662 states and 17768 transitions.
[2023-11-29 00:44:56,011 INFO  L78                 Accepts]: Start accepts. Automaton has 10662 states and 17768 transitions. Word has length 7005
[2023-11-29 00:44:56,015 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:44:56,015 INFO  L495      AbstractCegarLoop]: Abstraction has 10662 states and 17768 transitions.
[2023-11-29 00:44:56,016 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 889.4285714285714) internal successors, (6226), 7 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states 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 00:44:56,016 INFO  L276                IsEmpty]: Start isEmpty. Operand 10662 states and 17768 transitions.
[2023-11-29 00:44:56,206 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7007
[2023-11-29 00:44:56,206 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:44:56,208 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 00:44:56,309 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 00:44:56,408 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 00:44:56,409 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:44:56,409 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:44:56,410 INFO  L85        PathProgramCache]: Analyzing trace with hash 222358030, now seen corresponding path program 1 times
[2023-11-29 00:44:56,410 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:44:56,410 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175385324]
[2023-11-29 00:44:56,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:56,411 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:44:57,050 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:44:57,050 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849517110]
[2023-11-29 00:44:57,052 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:44:57,052 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:44:57,052 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:44:57,053 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:44:57,055 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 00:45:05,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:45:05,773 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35247 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:45:05,884 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:45:06,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked.
[2023-11-29 00:45:06,234 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:45:06,234 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:45:06,235 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175385324]
[2023-11-29 00:45:06,235 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:45:06,235 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849517110]
[2023-11-29 00:45:06,235 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [849517110] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:45:06,235 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:45:06,237 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:45:06,237 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863597009]
[2023-11-29 00:45:06,237 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:45:06,240 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:45:06,240 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:45:06,243 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:45:06,244 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:45:06,245 INFO  L87              Difference]: Start difference. First operand 10662 states and 17768 transitions. Second operand  has 7 states, 7 states have (on average 889.8571428571429) internal successors, (6229), 7 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states 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 00:45:06,794 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:45:06,795 INFO  L93              Difference]: Finished difference Result 28745 states and 47904 transitions.
[2023-11-29 00:45:06,795 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:45:06,796 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 889.8571428571429) internal successors, (6229), 7 states have internal predecessors, (6229), 0 states have call successors, (0), 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 7006
[2023-11-29 00:45:06,801 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:45:06,815 INFO  L225             Difference]: With dead ends: 28745
[2023-11-29 00:45:06,816 INFO  L226             Difference]: Without dead ends: 19682
[2023-11-29 00:45:06,924 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7015 GetRequests, 7003 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:45:06,925 INFO  L413           NwaCegarLoop]: 17700 mSDtfsCounter, 43566 mSDsluCounter, 68839 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43566 SdHoareTripleChecker+Valid, 86539 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:45:06,925 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43566 Valid, 86539 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:45:06,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19682 states.
[2023-11-29 00:45:07,028 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19682 to 10664.
[2023-11-29 00:45:07,038 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10664 states, 10663 states have (on average 1.6665103629372597) internal successors, (17770), 10663 states have internal predecessors, (17770), 0 states have call successors, (0), 0 states 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 00:45:07,050 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10664 states to 10664 states and 17770 transitions.
[2023-11-29 00:45:07,050 INFO  L78                 Accepts]: Start accepts. Automaton has 10664 states and 17770 transitions. Word has length 7006
[2023-11-29 00:45:07,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:45:07,054 INFO  L495      AbstractCegarLoop]: Abstraction has 10664 states and 17770 transitions.
[2023-11-29 00:45:07,055 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 889.8571428571429) internal successors, (6229), 7 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states 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 00:45:07,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 10664 states and 17770 transitions.
[2023-11-29 00:45:07,246 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7008
[2023-11-29 00:45:07,246 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:45:07,248 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 00:45:07,356 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 00:45:07,448 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:07,449 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:45:07,449 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:45:07,449 INFO  L85        PathProgramCache]: Analyzing trace with hash -851630652, now seen corresponding path program 1 times
[2023-11-29 00:45:07,450 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:45:07,450 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193375835]
[2023-11-29 00:45:07,450 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:07,450 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:45:08,036 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:45:08,036 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857822442]
[2023-11-29 00:45:08,037 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:08,038 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:08,038 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:45:08,038 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:45:08,039 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 00:45:16,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:45:17,186 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35250 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:45:17,266 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:45:17,636 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked.
[2023-11-29 00:45:17,636 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:45:17,637 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:45:17,637 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193375835]
[2023-11-29 00:45:17,637 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:45:17,637 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857822442]
[2023-11-29 00:45:17,637 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [857822442] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:45:17,637 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:45:17,639 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:45:17,639 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61824451]
[2023-11-29 00:45:17,639 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:45:17,644 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:45:17,644 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:45:17,649 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:45:17,649 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:45:17,651 INFO  L87              Difference]: Start difference. First operand 10664 states and 17770 transitions. Second operand  has 7 states, 7 states have (on average 890.2857142857143) internal successors, (6232), 7 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:45:18,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:45:18,179 INFO  L93              Difference]: Finished difference Result 28751 states and 47910 transitions.
[2023-11-29 00:45:18,179 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:45:18,181 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 890.2857142857143) internal successors, (6232), 7 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7007
[2023-11-29 00:45:18,186 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:45:18,204 INFO  L225             Difference]: With dead ends: 28751
[2023-11-29 00:45:18,204 INFO  L226             Difference]: Without dead ends: 19683
[2023-11-29 00:45:18,212 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7016 GetRequests, 7004 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:45:18,213 INFO  L413           NwaCegarLoop]: 17695 mSDtfsCounter, 43565 mSDsluCounter, 68824 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43565 SdHoareTripleChecker+Valid, 86519 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:45:18,213 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43565 Valid, 86519 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:45:18,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19683 states.
[2023-11-29 00:45:18,336 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19683 to 10666.
[2023-11-29 00:45:18,345 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10666 states, 10665 states have (on average 1.6663853727144866) internal successors, (17772), 10665 states have internal predecessors, (17772), 0 states have call successors, (0), 0 states 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 00:45:18,355 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10666 states to 10666 states and 17772 transitions.
[2023-11-29 00:45:18,355 INFO  L78                 Accepts]: Start accepts. Automaton has 10666 states and 17772 transitions. Word has length 7007
[2023-11-29 00:45:18,358 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:45:18,358 INFO  L495      AbstractCegarLoop]: Abstraction has 10666 states and 17772 transitions.
[2023-11-29 00:45:18,360 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 890.2857142857143) internal successors, (6232), 7 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:45:18,360 INFO  L276                IsEmpty]: Start isEmpty. Operand 10666 states and 17772 transitions.
[2023-11-29 00:45:18,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7009
[2023-11-29 00:45:18,554 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:45:18,556 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 00:45:18,647 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 00:45:18,757 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:18,757 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:45:18,757 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:45:18,758 INFO  L85        PathProgramCache]: Analyzing trace with hash -942480268, now seen corresponding path program 1 times
[2023-11-29 00:45:18,758 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:45:18,758 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826535878]
[2023-11-29 00:45:18,759 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:18,759 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:45:19,380 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:45:19,380 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801784963]
[2023-11-29 00:45:19,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:19,382 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:19,382 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:45:19,383 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:45:19,384 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 00:45:28,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:45:28,408 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35253 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:45:28,490 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:45:28,839 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked.
[2023-11-29 00:45:28,839 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:45:28,839 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:45:28,839 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826535878]
[2023-11-29 00:45:28,839 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:45:28,839 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801784963]
[2023-11-29 00:45:28,839 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [801784963] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:45:28,839 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:45:28,842 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:45:28,842 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831915970]
[2023-11-29 00:45:28,842 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:45:28,845 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:45:28,845 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:45:28,849 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:45:28,849 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:45:28,851 INFO  L87              Difference]: Start difference. First operand 10666 states and 17772 transitions. Second operand  has 7 states, 7 states have (on average 890.7142857142857) internal successors, (6235), 7 states have internal predecessors, (6235), 0 states have call successors, (0), 0 states 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 00:45:29,376 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:45:29,377 INFO  L93              Difference]: Finished difference Result 28757 states and 47916 transitions.
[2023-11-29 00:45:29,377 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:45:29,378 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 890.7142857142857) internal successors, (6235), 7 states have internal predecessors, (6235), 0 states have call successors, (0), 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 7008
[2023-11-29 00:45:29,383 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:45:29,395 INFO  L225             Difference]: With dead ends: 28757
[2023-11-29 00:45:29,396 INFO  L226             Difference]: Without dead ends: 19684
[2023-11-29 00:45:29,402 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7017 GetRequests, 7005 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:45:29,402 INFO  L413           NwaCegarLoop]: 17690 mSDtfsCounter, 43564 mSDsluCounter, 68809 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43564 SdHoareTripleChecker+Valid, 86499 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:45:29,402 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43564 Valid, 86499 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:45:29,417 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19684 states.
[2023-11-29 00:45:29,505 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19684 to 10668.
[2023-11-29 00:45:29,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10668 states, 10667 states have (on average 1.6662604293615824) internal successors, (17774), 10667 states have internal predecessors, (17774), 0 states have call successors, (0), 0 states 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 00:45:29,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 17774 transitions.
[2023-11-29 00:45:29,524 INFO  L78                 Accepts]: Start accepts. Automaton has 10668 states and 17774 transitions. Word has length 7008
[2023-11-29 00:45:29,527 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:45:29,527 INFO  L495      AbstractCegarLoop]: Abstraction has 10668 states and 17774 transitions.
[2023-11-29 00:45:29,529 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 890.7142857142857) internal successors, (6235), 7 states have internal predecessors, (6235), 0 states have call successors, (0), 0 states 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 00:45:29,529 INFO  L276                IsEmpty]: Start isEmpty. Operand 10668 states and 17774 transitions.
[2023-11-29 00:45:29,810 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7010
[2023-11-29 00:45:29,810 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:45:29,812 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 00:45:29,901 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 00:45:30,012 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:30,012 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:45:30,013 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:45:30,014 INFO  L85        PathProgramCache]: Analyzing trace with hash 1943188832, now seen corresponding path program 1 times
[2023-11-29 00:45:30,014 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:45:30,015 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444632042]
[2023-11-29 00:45:30,016 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:30,016 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:45:30,552 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:45:30,552 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204473252]
[2023-11-29 00:45:30,553 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:30,553 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:30,554 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:45:30,554 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:45:30,555 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 00:45:38,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:45:39,081 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35257 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:45:39,160 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:45:39,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked.
[2023-11-29 00:45:39,515 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:45:39,515 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:45:39,515 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444632042]
[2023-11-29 00:45:39,515 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:45:39,515 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204473252]
[2023-11-29 00:45:39,515 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [204473252] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:45:39,515 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:45:39,517 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:45:39,517 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098242679]
[2023-11-29 00:45:39,517 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:45:39,520 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:45:39,520 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:45:39,524 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:45:39,524 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:45:39,525 INFO  L87              Difference]: Start difference. First operand 10668 states and 17774 transitions. Second operand  has 7 states, 7 states have (on average 891.1428571428571) internal successors, (6238), 7 states have internal predecessors, (6238), 0 states have call successors, (0), 0 states 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 00:45:40,159 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:45:40,159 INFO  L93              Difference]: Finished difference Result 28763 states and 47922 transitions.
[2023-11-29 00:45:40,160 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:45:40,161 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 891.1428571428571) internal successors, (6238), 7 states have internal predecessors, (6238), 0 states have call successors, (0), 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 7009
[2023-11-29 00:45:40,165 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:45:40,173 INFO  L225             Difference]: With dead ends: 28763
[2023-11-29 00:45:40,173 INFO  L226             Difference]: Without dead ends: 19685
[2023-11-29 00:45:40,176 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7018 GetRequests, 7006 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:45:40,177 INFO  L413           NwaCegarLoop]: 17685 mSDtfsCounter, 43563 mSDsluCounter, 68794 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43563 SdHoareTripleChecker+Valid, 86479 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:45:40,177 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43563 Valid, 86479 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:45:40,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19685 states.
[2023-11-29 00:45:40,267 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19685 to 10670.
[2023-11-29 00:45:40,275 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10670 states, 10669 states have (on average 1.6661355328521885) internal successors, (17776), 10669 states have internal predecessors, (17776), 0 states have call successors, (0), 0 states 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 00:45:40,285 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10670 states to 10670 states and 17776 transitions.
[2023-11-29 00:45:40,285 INFO  L78                 Accepts]: Start accepts. Automaton has 10670 states and 17776 transitions. Word has length 7009
[2023-11-29 00:45:40,288 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:45:40,288 INFO  L495      AbstractCegarLoop]: Abstraction has 10670 states and 17776 transitions.
[2023-11-29 00:45:40,289 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 891.1428571428571) internal successors, (6238), 7 states have internal predecessors, (6238), 0 states have call successors, (0), 0 states 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 00:45:40,289 INFO  L276                IsEmpty]: Start isEmpty. Operand 10670 states and 17776 transitions.
[2023-11-29 00:45:40,476 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7011
[2023-11-29 00:45:40,476 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:45:40,477 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 00:45:40,567 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 00:45:40,677 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:40,677 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:45:40,678 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:45:40,678 INFO  L85        PathProgramCache]: Analyzing trace with hash 1850636252, now seen corresponding path program 1 times
[2023-11-29 00:45:40,679 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:45:40,679 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33856055]
[2023-11-29 00:45:40,679 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:40,679 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:45:41,210 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:45:41,210 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604565453]
[2023-11-29 00:45:41,212 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:41,212 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:41,212 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:45:41,212 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:45:41,213 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 00:45:49,046 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:45:49,248 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35260 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:45:49,327 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:45:49,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked.
[2023-11-29 00:45:49,677 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:45:49,677 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:45:49,677 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33856055]
[2023-11-29 00:45:49,677 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:45:49,677 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604565453]
[2023-11-29 00:45:49,677 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [604565453] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:45:49,677 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:45:49,679 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:45:49,680 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998461490]
[2023-11-29 00:45:49,680 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:45:49,683 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:45:49,683 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:45:49,685 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:45:49,686 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:45:49,687 INFO  L87              Difference]: Start difference. First operand 10670 states and 17776 transitions. Second operand  has 7 states, 7 states have (on average 891.5714285714286) internal successors, (6241), 7 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:45:50,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:45:50,343 INFO  L93              Difference]: Finished difference Result 28769 states and 47928 transitions.
[2023-11-29 00:45:50,344 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:45:50,345 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 891.5714285714286) internal successors, (6241), 7 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7010
[2023-11-29 00:45:50,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:45:50,367 INFO  L225             Difference]: With dead ends: 28769
[2023-11-29 00:45:50,367 INFO  L226             Difference]: Without dead ends: 19686
[2023-11-29 00:45:50,374 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7019 GetRequests, 7007 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:45:50,375 INFO  L413           NwaCegarLoop]: 17680 mSDtfsCounter, 43562 mSDsluCounter, 68779 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43562 SdHoareTripleChecker+Valid, 86459 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:45:50,375 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43562 Valid, 86459 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 00:45:50,394 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19686 states.
[2023-11-29 00:45:50,482 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19686 to 10672.
[2023-11-29 00:45:50,490 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10672 states, 10671 states have (on average 1.6660106831599664) internal successors, (17778), 10671 states have internal predecessors, (17778), 0 states have call successors, (0), 0 states 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 00:45:50,501 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10672 states to 10672 states and 17778 transitions.
[2023-11-29 00:45:50,501 INFO  L78                 Accepts]: Start accepts. Automaton has 10672 states and 17778 transitions. Word has length 7010
[2023-11-29 00:45:50,504 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:45:50,504 INFO  L495      AbstractCegarLoop]: Abstraction has 10672 states and 17778 transitions.
[2023-11-29 00:45:50,505 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 891.5714285714286) internal successors, (6241), 7 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:45:50,505 INFO  L276                IsEmpty]: Start isEmpty. Operand 10672 states and 17778 transitions.
[2023-11-29 00:45:50,696 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7012
[2023-11-29 00:45:50,696 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:45:50,697 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 00:45:50,786 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 00:45:50,897 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:50,898 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:45:50,898 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:45:50,899 INFO  L85        PathProgramCache]: Analyzing trace with hash -805094406, now seen corresponding path program 1 times
[2023-11-29 00:45:50,899 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:45:50,899 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806634071]
[2023-11-29 00:45:50,899 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:50,900 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:45:51,452 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:45:51,452 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264380422]
[2023-11-29 00:45:51,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:45:51,454 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:45:51,454 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:45:51,455 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:45:51,456 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 00:45:59,845 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:46:00,050 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35263 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:46:00,128 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:46:00,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked.
[2023-11-29 00:46:00,505 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:46:00,505 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:46:00,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806634071]
[2023-11-29 00:46:00,506 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:46:00,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264380422]
[2023-11-29 00:46:00,506 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [264380422] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:46:00,506 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:46:00,508 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:46:00,508 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120737923]
[2023-11-29 00:46:00,509 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:46:00,511 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:46:00,511 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:46:00,514 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:46:00,514 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:46:00,515 INFO  L87              Difference]: Start difference. First operand 10672 states and 17778 transitions. Second operand  has 7 states, 7 states have (on average 892.0) internal successors, (6244), 7 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states 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 00:46:01,295 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:46:01,295 INFO  L93              Difference]: Finished difference Result 28775 states and 47934 transitions.
[2023-11-29 00:46:01,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:46:01,297 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 892.0) internal successors, (6244), 7 states have internal predecessors, (6244), 0 states have call successors, (0), 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 7011
[2023-11-29 00:46:01,302 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:46:01,319 INFO  L225             Difference]: With dead ends: 28775
[2023-11-29 00:46:01,319 INFO  L226             Difference]: Without dead ends: 19687
[2023-11-29 00:46:01,327 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7020 GetRequests, 7008 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:46:01,327 INFO  L413           NwaCegarLoop]: 17675 mSDtfsCounter, 43561 mSDsluCounter, 68764 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43561 SdHoareTripleChecker+Valid, 86439 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:46:01,328 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43561 Valid, 86439 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:46:01,349 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19687 states.
[2023-11-29 00:46:01,451 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19687 to 10674.
[2023-11-29 00:46:01,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10674 states, 10673 states have (on average 1.6658858802585965) internal successors, (17780), 10673 states have internal predecessors, (17780), 0 states have call successors, (0), 0 states 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 00:46:01,471 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10674 states to 10674 states and 17780 transitions.
[2023-11-29 00:46:01,471 INFO  L78                 Accepts]: Start accepts. Automaton has 10674 states and 17780 transitions. Word has length 7011
[2023-11-29 00:46:01,474 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:46:01,474 INFO  L495      AbstractCegarLoop]: Abstraction has 10674 states and 17780 transitions.
[2023-11-29 00:46:01,475 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 892.0) internal successors, (6244), 7 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states 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 00:46:01,475 INFO  L276                IsEmpty]: Start isEmpty. Operand 10674 states and 17780 transitions.
[2023-11-29 00:46:01,674 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7013
[2023-11-29 00:46:01,674 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:46:01,675 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 00:46:01,769 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 00:46:01,876 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:46:01,876 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:46:01,877 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:46:01,878 INFO  L85        PathProgramCache]: Analyzing trace with hash -700762558, now seen corresponding path program 1 times
[2023-11-29 00:46:01,878 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:46:01,878 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903315427]
[2023-11-29 00:46:01,879 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:01,879 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:46:02,415 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:46:02,415 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126501629]
[2023-11-29 00:46:02,416 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:02,417 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:46:02,417 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:46:02,417 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:46:02,418 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 00:46:10,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:46:11,025 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35266 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:46:11,104 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:46:11,510 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked.
[2023-11-29 00:46:11,510 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:46:11,511 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:46:11,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903315427]
[2023-11-29 00:46:11,511 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:46:11,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126501629]
[2023-11-29 00:46:11,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126501629] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:46:11,511 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:46:11,513 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:46:11,513 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579532209]
[2023-11-29 00:46:11,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:46:11,517 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:46:11,517 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:46:11,520 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:46:11,521 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:46:11,522 INFO  L87              Difference]: Start difference. First operand 10674 states and 17780 transitions. Second operand  has 7 states, 7 states have (on average 892.4285714285714) internal successors, (6247), 7 states have internal predecessors, (6247), 0 states have call successors, (0), 0 states 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 00:46:12,239 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:46:12,239 INFO  L93              Difference]: Finished difference Result 28781 states and 47940 transitions.
[2023-11-29 00:46:12,239 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:46:12,240 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 892.4285714285714) internal successors, (6247), 7 states have internal predecessors, (6247), 0 states have call successors, (0), 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 7012
[2023-11-29 00:46:12,246 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:46:12,256 INFO  L225             Difference]: With dead ends: 28781
[2023-11-29 00:46:12,256 INFO  L226             Difference]: Without dead ends: 19688
[2023-11-29 00:46:12,259 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7021 GetRequests, 7009 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:46:12,260 INFO  L413           NwaCegarLoop]: 17670 mSDtfsCounter, 43560 mSDsluCounter, 68749 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43560 SdHoareTripleChecker+Valid, 86419 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:46:12,260 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43560 Valid, 86419 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:46:12,274 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19688 states.
[2023-11-29 00:46:12,352 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19688 to 10676.
[2023-11-29 00:46:12,361 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10676 states, 10675 states have (on average 1.6657611241217798) internal successors, (17782), 10675 states have internal predecessors, (17782), 0 states have call successors, (0), 0 states 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 00:46:12,371 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10676 states to 10676 states and 17782 transitions.
[2023-11-29 00:46:12,371 INFO  L78                 Accepts]: Start accepts. Automaton has 10676 states and 17782 transitions. Word has length 7012
[2023-11-29 00:46:12,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:46:12,374 INFO  L495      AbstractCegarLoop]: Abstraction has 10676 states and 17782 transitions.
[2023-11-29 00:46:12,375 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 892.4285714285714) internal successors, (6247), 7 states have internal predecessors, (6247), 0 states have call successors, (0), 0 states 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 00:46:12,375 INFO  L276                IsEmpty]: Start isEmpty. Operand 10676 states and 17782 transitions.
[2023-11-29 00:46:12,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7014
[2023-11-29 00:46:12,563 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:46:12,565 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 00:46:12,655 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 00:46:12,765 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-29 00:46:12,765 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:46:12,766 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:46:12,767 INFO  L85        PathProgramCache]: Analyzing trace with hash 250262678, now seen corresponding path program 1 times
[2023-11-29 00:46:12,767 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:46:12,767 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656723232]
[2023-11-29 00:46:12,769 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:12,769 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:46:13,470 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:46:13,470 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237508936]
[2023-11-29 00:46:13,471 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:13,472 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:46:13,472 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:46:13,472 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:46:13,473 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 00:46:21,871 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:46:22,074 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35270 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:46:22,151 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:46:22,492 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked.
[2023-11-29 00:46:22,492 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:46:22,492 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:46:22,492 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656723232]
[2023-11-29 00:46:22,493 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:46:22,493 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237508936]
[2023-11-29 00:46:22,493 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [237508936] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:46:22,493 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:46:22,494 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:46:22,495 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963499350]
[2023-11-29 00:46:22,495 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:46:22,497 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:46:22,497 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:46:22,500 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:46:22,500 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:46:22,501 INFO  L87              Difference]: Start difference. First operand 10676 states and 17782 transitions. Second operand  has 7 states, 7 states have (on average 892.8571428571429) internal successors, (6250), 7 states have internal predecessors, (6250), 0 states have call successors, (0), 0 states 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 00:46:23,021 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:46:23,021 INFO  L93              Difference]: Finished difference Result 28787 states and 47946 transitions.
[2023-11-29 00:46:23,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:46:23,023 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 892.8571428571429) internal successors, (6250), 7 states have internal predecessors, (6250), 0 states have call successors, (0), 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 7013
[2023-11-29 00:46:23,027 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:46:23,040 INFO  L225             Difference]: With dead ends: 28787
[2023-11-29 00:46:23,040 INFO  L226             Difference]: Without dead ends: 19689
[2023-11-29 00:46:23,046 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7022 GetRequests, 7010 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:46:23,046 INFO  L413           NwaCegarLoop]: 17665 mSDtfsCounter, 43559 mSDsluCounter, 68734 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43559 SdHoareTripleChecker+Valid, 86399 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:46:23,047 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43559 Valid, 86399 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:46:23,062 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19689 states.
[2023-11-29 00:46:23,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19689 to 10678.
[2023-11-29 00:46:23,155 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10678 states, 10677 states have (on average 1.6656364147232368) internal successors, (17784), 10677 states have internal predecessors, (17784), 0 states have call successors, (0), 0 states 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 00:46:23,165 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10678 states to 10678 states and 17784 transitions.
[2023-11-29 00:46:23,165 INFO  L78                 Accepts]: Start accepts. Automaton has 10678 states and 17784 transitions. Word has length 7013
[2023-11-29 00:46:23,168 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:46:23,168 INFO  L495      AbstractCegarLoop]: Abstraction has 10678 states and 17784 transitions.
[2023-11-29 00:46:23,169 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 892.8571428571429) internal successors, (6250), 7 states have internal predecessors, (6250), 0 states have call successors, (0), 0 states 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 00:46:23,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 10678 states and 17784 transitions.
[2023-11-29 00:46:23,486 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7015
[2023-11-29 00:46:23,487 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:46:23,488 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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[2023-11-29 00:46:23,582 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2023-11-29 00:46:23,688 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-11-29 00:46:23,689 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:46:23,689 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:46:23,690 INFO  L85        PathProgramCache]: Analyzing trace with hash 1642257066, now seen corresponding path program 1 times
[2023-11-29 00:46:23,690 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:46:23,690 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128106293]
[2023-11-29 00:46:23,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:23,690 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:46:24,220 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:46:24,220 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838642795]
[2023-11-29 00:46:24,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:24,222 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:46:24,222 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:46:24,223 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:46:24,223 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 00:46:32,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:46:32,473 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35273 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:46:32,552 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:46:32,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked.
[2023-11-29 00:46:32,902 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:46:32,902 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:46:32,902 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128106293]
[2023-11-29 00:46:32,902 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:46:32,902 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838642795]
[2023-11-29 00:46:32,902 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [838642795] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:46:32,903 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:46:32,905 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:46:32,905 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244939822]
[2023-11-29 00:46:32,905 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:46:32,909 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:46:32,909 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:46:32,912 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:46:32,912 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:46:32,913 INFO  L87              Difference]: Start difference. First operand 10678 states and 17784 transitions. Second operand  has 7 states, 7 states have (on average 893.2857142857143) internal successors, (6253), 7 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:46:33,496 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:46:33,496 INFO  L93              Difference]: Finished difference Result 28793 states and 47952 transitions.
[2023-11-29 00:46:33,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:46:33,498 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 893.2857142857143) internal successors, (6253), 7 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7014
[2023-11-29 00:46:33,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:46:33,515 INFO  L225             Difference]: With dead ends: 28793
[2023-11-29 00:46:33,515 INFO  L226             Difference]: Without dead ends: 19690
[2023-11-29 00:46:33,522 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7023 GetRequests, 7011 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:46:33,522 INFO  L413           NwaCegarLoop]: 17660 mSDtfsCounter, 43558 mSDsluCounter, 68719 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43558 SdHoareTripleChecker+Valid, 86379 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:46:33,522 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43558 Valid, 86379 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:46:33,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19690 states.
[2023-11-29 00:46:33,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19690 to 10680.
[2023-11-29 00:46:33,631 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10680 states, 10679 states have (on average 1.6655117520367075) internal successors, (17786), 10679 states have internal predecessors, (17786), 0 states have call successors, (0), 0 states 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 00:46:33,641 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10680 states to 10680 states and 17786 transitions.
[2023-11-29 00:46:33,641 INFO  L78                 Accepts]: Start accepts. Automaton has 10680 states and 17786 transitions. Word has length 7014
[2023-11-29 00:46:33,644 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:46:33,644 INFO  L495      AbstractCegarLoop]: Abstraction has 10680 states and 17786 transitions.
[2023-11-29 00:46:33,645 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 893.2857142857143) internal successors, (6253), 7 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:46:33,645 INFO  L276                IsEmpty]: Start isEmpty. Operand 10680 states and 17786 transitions.
[2023-11-29 00:46:33,837 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7016
[2023-11-29 00:46:33,837 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:46:33,839 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 00:46:33,934 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2023-11-29 00:46:34,039 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-11-29 00:46:34,039 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:46:34,040 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:46:34,041 INFO  L85        PathProgramCache]: Analyzing trace with hash -2040801488, now seen corresponding path program 1 times
[2023-11-29 00:46:34,041 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:46:34,041 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242907805]
[2023-11-29 00:46:34,042 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:34,042 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:46:34,775 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:46:34,775 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601533566]
[2023-11-29 00:46:34,776 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:34,776 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:46:34,776 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:46:34,777 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:46:34,778 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 00:46:42,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:46:43,054 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35276 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:46:43,131 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:46:43,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-11-29 00:46:43,466 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:46:43,466 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:46:43,466 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242907805]
[2023-11-29 00:46:43,466 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:46:43,466 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601533566]
[2023-11-29 00:46:43,466 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [601533566] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:46:43,466 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:46:43,468 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:46:43,469 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941467796]
[2023-11-29 00:46:43,469 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:46:43,471 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:46:43,472 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:46:43,474 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:46:43,474 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:46:43,475 INFO  L87              Difference]: Start difference. First operand 10680 states and 17786 transitions. Second operand  has 7 states, 7 states have (on average 893.7142857142857) internal successors, (6256), 7 states have internal predecessors, (6256), 0 states have call successors, (0), 0 states 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 00:46:44,008 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:46:44,008 INFO  L93              Difference]: Finished difference Result 28799 states and 47958 transitions.
[2023-11-29 00:46:44,009 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:46:44,010 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 893.7142857142857) internal successors, (6256), 7 states have internal predecessors, (6256), 0 states have call successors, (0), 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 7015
[2023-11-29 00:46:44,015 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:46:44,027 INFO  L225             Difference]: With dead ends: 28799
[2023-11-29 00:46:44,027 INFO  L226             Difference]: Without dead ends: 19691
[2023-11-29 00:46:44,034 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7024 GetRequests, 7012 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:46:44,034 INFO  L413           NwaCegarLoop]: 17655 mSDtfsCounter, 43557 mSDsluCounter, 68704 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43557 SdHoareTripleChecker+Valid, 86359 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:46:44,034 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43557 Valid, 86359 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:46:44,050 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19691 states.
[2023-11-29 00:46:44,135 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19691 to 10682.
[2023-11-29 00:46:44,143 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10682 states, 10681 states have (on average 1.6653871360359518) internal successors, (17788), 10681 states have internal predecessors, (17788), 0 states have call successors, (0), 0 states 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 00:46:44,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10682 states to 10682 states and 17788 transitions.
[2023-11-29 00:46:44,153 INFO  L78                 Accepts]: Start accepts. Automaton has 10682 states and 17788 transitions. Word has length 7015
[2023-11-29 00:46:44,157 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:46:44,157 INFO  L495      AbstractCegarLoop]: Abstraction has 10682 states and 17788 transitions.
[2023-11-29 00:46:44,158 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 893.7142857142857) internal successors, (6256), 7 states have internal predecessors, (6256), 0 states have call successors, (0), 0 states 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 00:46:44,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 10682 states and 17788 transitions.
[2023-11-29 00:46:44,345 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7017
[2023-11-29 00:46:44,345 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:46:44,346 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 00:46:44,433 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-11-29 00:46:44,546 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-11-29 00:46:44,547 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:46:44,547 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:46:44,548 INFO  L85        PathProgramCache]: Analyzing trace with hash 482729232, now seen corresponding path program 1 times
[2023-11-29 00:46:44,548 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:46:44,548 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845777597]
[2023-11-29 00:46:44,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:44,549 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:46:45,078 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:46:45,079 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127804418]
[2023-11-29 00:46:45,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:45,080 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:46:45,080 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:46:45,081 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:46:45,081 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 00:46:53,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:46:53,727 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35279 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:46:53,838 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:46:54,304 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked.
[2023-11-29 00:46:54,304 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:46:54,304 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:46:54,304 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845777597]
[2023-11-29 00:46:54,304 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:46:54,305 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127804418]
[2023-11-29 00:46:54,305 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127804418] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:46:54,305 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:46:54,307 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:46:54,307 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623461863]
[2023-11-29 00:46:54,307 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:46:54,313 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:46:54,313 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:46:54,317 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:46:54,318 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:46:54,319 INFO  L87              Difference]: Start difference. First operand 10682 states and 17788 transitions. Second operand  has 7 states, 7 states have (on average 894.1428571428571) internal successors, (6259), 7 states have internal predecessors, (6259), 0 states have call successors, (0), 0 states 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 00:46:55,033 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:46:55,033 INFO  L93              Difference]: Finished difference Result 28805 states and 47964 transitions.
[2023-11-29 00:46:55,033 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:46:55,035 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 894.1428571428571) internal successors, (6259), 7 states have internal predecessors, (6259), 0 states have call successors, (0), 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 7016
[2023-11-29 00:46:55,041 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:46:55,056 INFO  L225             Difference]: With dead ends: 28805
[2023-11-29 00:46:55,056 INFO  L226             Difference]: Without dead ends: 19692
[2023-11-29 00:46:55,064 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7025 GetRequests, 7013 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:46:55,065 INFO  L413           NwaCegarLoop]: 17650 mSDtfsCounter, 43556 mSDsluCounter, 68689 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43556 SdHoareTripleChecker+Valid, 86339 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:46:55,065 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43556 Valid, 86339 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:46:55,085 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19692 states.
[2023-11-29 00:46:55,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19692 to 10684.
[2023-11-29 00:46:55,222 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10684 states, 10683 states have (on average 1.6652625666947487) internal successors, (17790), 10683 states have internal predecessors, (17790), 0 states have call successors, (0), 0 states 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 00:46:55,236 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10684 states to 10684 states and 17790 transitions.
[2023-11-29 00:46:55,237 INFO  L78                 Accepts]: Start accepts. Automaton has 10684 states and 17790 transitions. Word has length 7016
[2023-11-29 00:46:55,241 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:46:55,241 INFO  L495      AbstractCegarLoop]: Abstraction has 10684 states and 17790 transitions.
[2023-11-29 00:46:55,243 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 894.1428571428571) internal successors, (6259), 7 states have internal predecessors, (6259), 0 states have call successors, (0), 0 states 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 00:46:55,243 INFO  L276                IsEmpty]: Start isEmpty. Operand 10684 states and 17790 transitions.
[2023-11-29 00:46:55,700 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7018
[2023-11-29 00:46:55,701 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:46:55,702 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 00:46:55,795 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 00:46:55,903 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 00:46:55,903 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:46:55,903 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:46:55,904 INFO  L85        PathProgramCache]: Analyzing trace with hash -1785841460, now seen corresponding path program 1 times
[2023-11-29 00:46:55,904 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:46:55,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504187941]
[2023-11-29 00:46:55,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:55,905 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:46:56,579 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:46:56,579 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188289]
[2023-11-29 00:46:56,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:46:56,580 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:46:56,580 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:46:56,581 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:46:56,582 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 00:47:04,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:47:04,872 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35283 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:47:04,949 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:47:05,351 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked.
[2023-11-29 00:47:05,351 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:47:05,352 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:47:05,352 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504187941]
[2023-11-29 00:47:05,352 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:47:05,352 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188289]
[2023-11-29 00:47:05,352 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188289] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:47:05,352 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:47:05,354 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:47:05,354 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449235549]
[2023-11-29 00:47:05,354 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:47:05,358 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:47:05,358 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:47:05,363 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:47:05,363 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:47:05,364 INFO  L87              Difference]: Start difference. First operand 10684 states and 17790 transitions. Second operand  has 7 states, 7 states have (on average 894.5714285714286) internal successors, (6262), 7 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:47:05,881 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:47:05,881 INFO  L93              Difference]: Finished difference Result 28811 states and 47970 transitions.
[2023-11-29 00:47:05,882 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:47:05,883 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 894.5714285714286) internal successors, (6262), 7 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7017
[2023-11-29 00:47:05,887 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:47:05,900 INFO  L225             Difference]: With dead ends: 28811
[2023-11-29 00:47:05,900 INFO  L226             Difference]: Without dead ends: 19693
[2023-11-29 00:47:05,907 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7026 GetRequests, 7014 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:47:05,907 INFO  L413           NwaCegarLoop]: 17645 mSDtfsCounter, 43555 mSDsluCounter, 68674 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43555 SdHoareTripleChecker+Valid, 86319 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:47:05,907 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43555 Valid, 86319 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:47:05,923 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19693 states.
[2023-11-29 00:47:06,010 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19693 to 10686.
[2023-11-29 00:47:06,018 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10686 states, 10685 states have (on average 1.6651380439868975) internal successors, (17792), 10685 states have internal predecessors, (17792), 0 states have call successors, (0), 0 states 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 00:47:06,028 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10686 states to 10686 states and 17792 transitions.
[2023-11-29 00:47:06,028 INFO  L78                 Accepts]: Start accepts. Automaton has 10686 states and 17792 transitions. Word has length 7017
[2023-11-29 00:47:06,031 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:47:06,031 INFO  L495      AbstractCegarLoop]: Abstraction has 10686 states and 17792 transitions.
[2023-11-29 00:47:06,032 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 894.5714285714286) internal successors, (6262), 7 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:47:06,033 INFO  L276                IsEmpty]: Start isEmpty. Operand 10686 states and 17792 transitions.
[2023-11-29 00:47:06,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7019
[2023-11-29 00:47:06,221 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:47:06,222 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 00:47:06,308 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-11-29 00:47:06,422 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:47:06,423 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:47:06,423 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:47:06,424 INFO  L85        PathProgramCache]: Analyzing trace with hash 139039352, now seen corresponding path program 1 times
[2023-11-29 00:47:06,424 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:47:06,424 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552865042]
[2023-11-29 00:47:06,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:06,425 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:47:06,964 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:47:06,964 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219648489]
[2023-11-29 00:47:06,967 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:06,967 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:47:06,967 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:47:06,968 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:47:06,968 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-11-29 00:47:15,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:47:15,222 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35286 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:47:15,299 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:47:15,645 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked.
[2023-11-29 00:47:15,645 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:47:15,645 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:47:15,645 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552865042]
[2023-11-29 00:47:15,645 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:47:15,645 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219648489]
[2023-11-29 00:47:15,645 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219648489] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:47:15,646 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:47:15,648 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:47:15,648 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140146746]
[2023-11-29 00:47:15,648 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:47:15,652 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:47:15,652 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:47:15,654 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:47:15,655 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:47:15,656 INFO  L87              Difference]: Start difference. First operand 10686 states and 17792 transitions. Second operand  has 7 states, 7 states have (on average 895.0) internal successors, (6265), 7 states have internal predecessors, (6265), 0 states have call successors, (0), 0 states 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 00:47:16,346 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:47:16,346 INFO  L93              Difference]: Finished difference Result 28817 states and 47976 transitions.
[2023-11-29 00:47:16,346 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:47:16,347 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 895.0) internal successors, (6265), 7 states have internal predecessors, (6265), 0 states have call successors, (0), 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 7018
[2023-11-29 00:47:16,352 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:47:16,363 INFO  L225             Difference]: With dead ends: 28817
[2023-11-29 00:47:16,363 INFO  L226             Difference]: Without dead ends: 19694
[2023-11-29 00:47:16,367 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7027 GetRequests, 7015 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:47:16,368 INFO  L413           NwaCegarLoop]: 17640 mSDtfsCounter, 43554 mSDsluCounter, 68659 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43554 SdHoareTripleChecker+Valid, 86299 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:47:16,368 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43554 Valid, 86299 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:47:16,382 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19694 states.
[2023-11-29 00:47:16,462 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19694 to 10688.
[2023-11-29 00:47:16,471 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10688 states, 10687 states have (on average 1.6650135678862168) internal successors, (17794), 10687 states have internal predecessors, (17794), 0 states have call successors, (0), 0 states 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 00:47:16,481 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10688 states to 10688 states and 17794 transitions.
[2023-11-29 00:47:16,481 INFO  L78                 Accepts]: Start accepts. Automaton has 10688 states and 17794 transitions. Word has length 7018
[2023-11-29 00:47:16,484 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:47:16,484 INFO  L495      AbstractCegarLoop]: Abstraction has 10688 states and 17794 transitions.
[2023-11-29 00:47:16,485 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 895.0) internal successors, (6265), 7 states have internal predecessors, (6265), 0 states have call successors, (0), 0 states 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 00:47:16,485 INFO  L276                IsEmpty]: Start isEmpty. Operand 10688 states and 17794 transitions.
[2023-11-29 00:47:16,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7020
[2023-11-29 00:47:16,673 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:47:16,674 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 00:47:16,760 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-11-29 00:47:16,874 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:47:16,875 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:47:16,875 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:47:16,875 INFO  L85        PathProgramCache]: Analyzing trace with hash 522483558, now seen corresponding path program 1 times
[2023-11-29 00:47:16,876 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:47:16,876 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864693460]
[2023-11-29 00:47:16,877 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:16,877 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:47:17,417 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:47:17,417 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487472880]
[2023-11-29 00:47:17,418 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:17,418 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:47:17,418 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:47:17,419 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:47:17,419 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-11-29 00:47:25,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:47:25,675 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35289 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:47:25,752 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:47:26,326 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked.
[2023-11-29 00:47:26,326 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:47:26,326 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:47:26,327 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864693460]
[2023-11-29 00:47:26,327 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:47:26,327 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487472880]
[2023-11-29 00:47:26,327 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487472880] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:47:26,327 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:47:26,329 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:47:26,329 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533041934]
[2023-11-29 00:47:26,329 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:47:26,331 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:47:26,331 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:47:26,334 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:47:26,334 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:47:26,335 INFO  L87              Difference]: Start difference. First operand 10688 states and 17794 transitions. Second operand  has 7 states, 7 states have (on average 895.4285714285714) internal successors, (6268), 7 states have internal predecessors, (6268), 0 states have call successors, (0), 0 states 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 00:47:26,843 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:47:26,843 INFO  L93              Difference]: Finished difference Result 28823 states and 47982 transitions.
[2023-11-29 00:47:26,843 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:47:26,845 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 895.4285714285714) internal successors, (6268), 7 states have internal predecessors, (6268), 0 states have call successors, (0), 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 7019
[2023-11-29 00:47:26,850 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:47:26,863 INFO  L225             Difference]: With dead ends: 28823
[2023-11-29 00:47:26,863 INFO  L226             Difference]: Without dead ends: 19695
[2023-11-29 00:47:26,869 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7028 GetRequests, 7016 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:47:26,870 INFO  L413           NwaCegarLoop]: 17635 mSDtfsCounter, 43553 mSDsluCounter, 68644 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43553 SdHoareTripleChecker+Valid, 86279 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:47:26,870 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43553 Valid, 86279 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:47:26,885 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19695 states.
[2023-11-29 00:47:26,975 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19695 to 10690.
[2023-11-29 00:47:26,984 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10690 states, 10689 states have (on average 1.664889138366545) internal successors, (17796), 10689 states have internal predecessors, (17796), 0 states have call successors, (0), 0 states 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 00:47:26,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10690 states to 10690 states and 17796 transitions.
[2023-11-29 00:47:26,994 INFO  L78                 Accepts]: Start accepts. Automaton has 10690 states and 17796 transitions. Word has length 7019
[2023-11-29 00:47:26,997 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:47:26,997 INFO  L495      AbstractCegarLoop]: Abstraction has 10690 states and 17796 transitions.
[2023-11-29 00:47:26,998 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 895.4285714285714) internal successors, (6268), 7 states have internal predecessors, (6268), 0 states have call successors, (0), 0 states 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 00:47:26,998 INFO  L276                IsEmpty]: Start isEmpty. Operand 10690 states and 17796 transitions.
[2023-11-29 00:47:27,186 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7021
[2023-11-29 00:47:27,186 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:47:27,187 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 00:47:27,274 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-11-29 00:47:27,387 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31
[2023-11-29 00:47:27,388 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:47:27,388 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:47:27,389 INFO  L85        PathProgramCache]: Analyzing trace with hash 29251806, now seen corresponding path program 1 times
[2023-11-29 00:47:27,389 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:47:27,389 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756685812]
[2023-11-29 00:47:27,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:27,389 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:47:27,928 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:47:27,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103095866]
[2023-11-29 00:47:27,929 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:27,929 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:47:27,929 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:47:27,930 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:47:27,931 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-11-29 00:47:35,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:47:36,174 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35292 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:47:36,251 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:47:36,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked.
[2023-11-29 00:47:36,597 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:47:36,597 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:47:36,598 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756685812]
[2023-11-29 00:47:36,598 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:47:36,598 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103095866]
[2023-11-29 00:47:36,598 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103095866] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:47:36,598 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:47:36,600 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:47:36,600 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040027023]
[2023-11-29 00:47:36,600 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:47:36,603 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:47:36,603 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:47:36,606 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:47:36,606 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:47:36,607 INFO  L87              Difference]: Start difference. First operand 10690 states and 17796 transitions. Second operand  has 7 states, 7 states have (on average 895.8571428571429) internal successors, (6271), 7 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states 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 00:47:37,125 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:47:37,125 INFO  L93              Difference]: Finished difference Result 28829 states and 47988 transitions.
[2023-11-29 00:47:37,125 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:47:37,126 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 895.8571428571429) internal successors, (6271), 7 states have internal predecessors, (6271), 0 states have call successors, (0), 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 7020
[2023-11-29 00:47:37,131 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:47:37,144 INFO  L225             Difference]: With dead ends: 28829
[2023-11-29 00:47:37,144 INFO  L226             Difference]: Without dead ends: 19696
[2023-11-29 00:47:37,150 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7029 GetRequests, 7017 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:47:37,151 INFO  L413           NwaCegarLoop]: 17630 mSDtfsCounter, 43552 mSDsluCounter, 68629 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43552 SdHoareTripleChecker+Valid, 86259 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:47:37,151 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43552 Valid, 86259 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:47:37,166 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19696 states.
[2023-11-29 00:47:37,251 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19696 to 10692.
[2023-11-29 00:47:37,259 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10692 states, 10691 states have (on average 1.6647647554017397) internal successors, (17798), 10691 states have internal predecessors, (17798), 0 states have call successors, (0), 0 states 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 00:47:37,270 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10692 states to 10692 states and 17798 transitions.
[2023-11-29 00:47:37,270 INFO  L78                 Accepts]: Start accepts. Automaton has 10692 states and 17798 transitions. Word has length 7020
[2023-11-29 00:47:37,273 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:47:37,273 INFO  L495      AbstractCegarLoop]: Abstraction has 10692 states and 17798 transitions.
[2023-11-29 00:47:37,274 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 895.8571428571429) internal successors, (6271), 7 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states 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 00:47:37,274 INFO  L276                IsEmpty]: Start isEmpty. Operand 10692 states and 17798 transitions.
[2023-11-29 00:47:37,462 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7022
[2023-11-29 00:47:37,462 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:47:37,463 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 00:47:37,549 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2023-11-29 00:47:37,663 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2023-11-29 00:47:37,664 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:47:37,664 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:47:37,665 INFO  L85        PathProgramCache]: Analyzing trace with hash 500875778, now seen corresponding path program 1 times
[2023-11-29 00:47:37,665 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:47:37,665 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880216218]
[2023-11-29 00:47:37,666 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:37,666 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:47:38,194 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:47:38,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763343893]
[2023-11-29 00:47:38,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:38,195 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:47:38,195 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:47:38,196 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:47:38,197 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-11-29 00:47:46,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:47:46,502 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35296 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:47:46,579 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:47:46,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked.
[2023-11-29 00:47:46,932 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:47:46,932 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:47:46,932 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880216218]
[2023-11-29 00:47:46,932 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:47:46,932 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763343893]
[2023-11-29 00:47:46,932 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [763343893] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:47:46,932 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:47:46,935 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:47:46,935 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988941295]
[2023-11-29 00:47:46,935 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:47:46,938 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:47:46,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:47:46,941 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:47:46,941 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:47:46,942 INFO  L87              Difference]: Start difference. First operand 10692 states and 17798 transitions. Second operand  has 7 states, 7 states have (on average 896.2857142857143) internal successors, (6274), 7 states have internal predecessors, (6274), 0 states have call successors, (0), 0 states 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 00:47:47,570 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:47:47,570 INFO  L93              Difference]: Finished difference Result 28835 states and 47994 transitions.
[2023-11-29 00:47:47,570 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:47:47,571 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 896.2857142857143) internal successors, (6274), 7 states have internal predecessors, (6274), 0 states have call successors, (0), 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 7021
[2023-11-29 00:47:47,576 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:47:47,586 INFO  L225             Difference]: With dead ends: 28835
[2023-11-29 00:47:47,586 INFO  L226             Difference]: Without dead ends: 19697
[2023-11-29 00:47:47,590 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7030 GetRequests, 7018 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:47:47,590 INFO  L413           NwaCegarLoop]: 17625 mSDtfsCounter, 43551 mSDsluCounter, 68614 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43551 SdHoareTripleChecker+Valid, 86239 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:47:47,591 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43551 Valid, 86239 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:47:47,604 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19697 states.
[2023-11-29 00:47:47,688 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19697 to 10694.
[2023-11-29 00:47:47,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10694 states, 10693 states have (on average 1.6646404189656785) internal successors, (17800), 10693 states have internal predecessors, (17800), 0 states have call successors, (0), 0 states 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 00:47:47,707 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10694 states to 10694 states and 17800 transitions.
[2023-11-29 00:47:47,707 INFO  L78                 Accepts]: Start accepts. Automaton has 10694 states and 17800 transitions. Word has length 7021
[2023-11-29 00:47:47,710 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:47:47,710 INFO  L495      AbstractCegarLoop]: Abstraction has 10694 states and 17800 transitions.
[2023-11-29 00:47:47,711 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 896.2857142857143) internal successors, (6274), 7 states have internal predecessors, (6274), 0 states have call successors, (0), 0 states 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 00:47:47,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 10694 states and 17800 transitions.
[2023-11-29 00:47:47,898 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7023
[2023-11-29 00:47:47,899 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:47:47,900 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 00:47:47,986 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-11-29 00:47:48,100 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2023-11-29 00:47:48,100 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:47:48,101 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:47:48,101 INFO  L85        PathProgramCache]: Analyzing trace with hash -1022484666, now seen corresponding path program 1 times
[2023-11-29 00:47:48,101 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:47:48,101 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107707057]
[2023-11-29 00:47:48,102 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:48,102 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:47:48,629 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:47:48,629 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016981241]
[2023-11-29 00:47:48,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:48,630 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:47:48,630 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:47:48,631 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:47:48,631 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-11-29 00:47:56,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:47:56,842 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35299 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:47:56,920 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:47:57,272 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked.
[2023-11-29 00:47:57,272 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:47:57,272 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:47:57,272 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107707057]
[2023-11-29 00:47:57,272 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:47:57,273 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016981241]
[2023-11-29 00:47:57,273 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016981241] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:47:57,273 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:47:57,275 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:47:57,275 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686063296]
[2023-11-29 00:47:57,275 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:47:57,279 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:47:57,279 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:47:57,282 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:47:57,282 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:47:57,283 INFO  L87              Difference]: Start difference. First operand 10694 states and 17800 transitions. Second operand  has 7 states, 7 states have (on average 896.7142857142857) internal successors, (6277), 7 states have internal predecessors, (6277), 0 states have call successors, (0), 0 states 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 00:47:57,802 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:47:57,803 INFO  L93              Difference]: Finished difference Result 28841 states and 48000 transitions.
[2023-11-29 00:47:57,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:47:57,805 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 896.7142857142857) internal successors, (6277), 7 states have internal predecessors, (6277), 0 states have call successors, (0), 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 7022
[2023-11-29 00:47:57,809 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:47:57,822 INFO  L225             Difference]: With dead ends: 28841
[2023-11-29 00:47:57,822 INFO  L226             Difference]: Without dead ends: 19698
[2023-11-29 00:47:57,829 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7031 GetRequests, 7019 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:47:57,829 INFO  L413           NwaCegarLoop]: 17620 mSDtfsCounter, 43550 mSDsluCounter, 68599 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43550 SdHoareTripleChecker+Valid, 86219 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:47:57,829 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43550 Valid, 86219 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:47:57,845 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19698 states.
[2023-11-29 00:47:57,930 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19698 to 10696.
[2023-11-29 00:47:57,938 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10696 states, 10695 states have (on average 1.664516129032258) internal successors, (17802), 10695 states have internal predecessors, (17802), 0 states have call successors, (0), 0 states 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 00:47:57,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10696 states to 10696 states and 17802 transitions.
[2023-11-29 00:47:57,949 INFO  L78                 Accepts]: Start accepts. Automaton has 10696 states and 17802 transitions. Word has length 7022
[2023-11-29 00:47:57,952 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:47:57,952 INFO  L495      AbstractCegarLoop]: Abstraction has 10696 states and 17802 transitions.
[2023-11-29 00:47:57,953 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 896.7142857142857) internal successors, (6277), 7 states have internal predecessors, (6277), 0 states have call successors, (0), 0 states 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 00:47:57,953 INFO  L276                IsEmpty]: Start isEmpty. Operand 10696 states and 17802 transitions.
[2023-11-29 00:47:58,142 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7024
[2023-11-29 00:47:58,142 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:47:58,143 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:58,229 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2023-11-29 00:47:58,343 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2023-11-29 00:47:58,344 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:47:58,344 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:47:58,345 INFO  L85        PathProgramCache]: Analyzing trace with hash -495280996, now seen corresponding path program 1 times
[2023-11-29 00:47:58,345 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:47:58,345 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553742679]
[2023-11-29 00:47:58,346 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:58,346 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:47:58,931 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:47:58,931 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551811930]
[2023-11-29 00:47:58,932 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:47:58,932 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:47:58,932 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:47:58,933 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:47:58,934 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-11-29 00:48:07,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:48:07,437 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35302 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:48:07,515 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:48:07,859 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked.
[2023-11-29 00:48:07,859 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:48:07,859 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:48:07,859 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553742679]
[2023-11-29 00:48:07,859 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:48:07,859 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551811930]
[2023-11-29 00:48:07,859 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551811930] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:48:07,859 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:48:07,861 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:48:07,861 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163861983]
[2023-11-29 00:48:07,861 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:48:07,864 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:48:07,864 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:48:07,867 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:48:07,867 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:48:07,868 INFO  L87              Difference]: Start difference. First operand 10696 states and 17802 transitions. Second operand  has 7 states, 7 states have (on average 897.1428571428571) internal successors, (6280), 7 states have internal predecessors, (6280), 0 states have call successors, (0), 0 states 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 00:48:08,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:48:08,378 INFO  L93              Difference]: Finished difference Result 28847 states and 48006 transitions.
[2023-11-29 00:48:08,378 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:48:08,380 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 897.1428571428571) internal successors, (6280), 7 states have internal predecessors, (6280), 0 states have call successors, (0), 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 7023
[2023-11-29 00:48:08,385 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:48:08,397 INFO  L225             Difference]: With dead ends: 28847
[2023-11-29 00:48:08,397 INFO  L226             Difference]: Without dead ends: 19699
[2023-11-29 00:48:08,404 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7032 GetRequests, 7020 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:48:08,404 INFO  L413           NwaCegarLoop]: 17615 mSDtfsCounter, 43549 mSDsluCounter, 68584 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43549 SdHoareTripleChecker+Valid, 86199 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:48:08,404 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43549 Valid, 86199 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:48:08,420 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19699 states.
[2023-11-29 00:48:08,505 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19699 to 10698.
[2023-11-29 00:48:08,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10698 states, 10697 states have (on average 1.664391885575395) internal successors, (17804), 10697 states have internal predecessors, (17804), 0 states have call successors, (0), 0 states 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 00:48:08,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10698 states to 10698 states and 17804 transitions.
[2023-11-29 00:48:08,524 INFO  L78                 Accepts]: Start accepts. Automaton has 10698 states and 17804 transitions. Word has length 7023
[2023-11-29 00:48:08,527 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:48:08,527 INFO  L495      AbstractCegarLoop]: Abstraction has 10698 states and 17804 transitions.
[2023-11-29 00:48:08,528 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 897.1428571428571) internal successors, (6280), 7 states have internal predecessors, (6280), 0 states have call successors, (0), 0 states 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 00:48:08,528 INFO  L276                IsEmpty]: Start isEmpty. Operand 10698 states and 17804 transitions.
[2023-11-29 00:48:08,716 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7025
[2023-11-29 00:48:08,716 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:48:08,717 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:48:08,803 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2023-11-29 00:48:08,917 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2023-11-29 00:48:08,918 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===



WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED.



[2023-11-29 00:48:29,101 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7027
[2023-11-29 00:48:29,101 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:48:29,102 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 00:48:29,189 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2023-11-29 00:48:29,302 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-11-29 00:48:29,303 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:48:29,303 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:48:29,304 INFO  L85        PathProgramCache]: Analyzing trace with hash 352059668, now seen corresponding path program 1 times
[2023-11-29 00:48:29,304 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:48:29,304 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718947357]
[2023-11-29 00:48:29,305 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:48:29,305 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:48:29,837 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:48:29,837 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779868611]
[2023-11-29 00:48:29,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:48:29,838 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:48:29,838 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:48:29,839 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:48:29,840 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-11-29 00:48:37,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:48:38,082 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35312 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:48:38,159 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:48:38,523 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked.
[2023-11-29 00:48:38,524 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:48:38,524 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:48:38,524 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718947357]
[2023-11-29 00:48:38,524 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:48:38,524 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779868611]
[2023-11-29 00:48:38,524 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [779868611] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:48:38,524 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:48:38,527 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:48:38,527 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761279010]
[2023-11-29 00:48:38,527 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:48:38,530 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:48:38,530 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:48:38,532 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:48:38,533 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:48:38,534 INFO  L87              Difference]: Start difference. First operand 10702 states and 17808 transitions. Second operand  has 7 states, 7 states have (on average 898.4285714285714) internal successors, (6289), 7 states have internal predecessors, (6289), 0 states have call successors, (0), 0 states 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 00:48:39,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:48:39,057 INFO  L93              Difference]: Finished difference Result 28865 states and 48024 transitions.
[2023-11-29 00:48:39,058 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:48:39,059 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 898.4285714285714) internal successors, (6289), 7 states have internal predecessors, (6289), 0 states have call successors, (0), 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 7026
[2023-11-29 00:48:39,064 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:48:39,076 INFO  L225             Difference]: With dead ends: 28865
[2023-11-29 00:48:39,076 INFO  L226             Difference]: Without dead ends: 19702
[2023-11-29 00:48:39,083 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7035 GetRequests, 7023 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:48:39,083 INFO  L413           NwaCegarLoop]: 17600 mSDtfsCounter, 43546 mSDsluCounter, 68539 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43546 SdHoareTripleChecker+Valid, 86139 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:48:39,083 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43546 Valid, 86139 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:48:39,098 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19702 states.
[2023-11-29 00:48:39,183 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19702 to 10704.
[2023-11-29 00:48:39,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10704 states, 10703 states have (on average 1.6640194338036065) internal successors, (17810), 10703 states have internal predecessors, (17810), 0 states have call successors, (0), 0 states 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 00:48:39,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10704 states to 10704 states and 17810 transitions.
[2023-11-29 00:48:39,202 INFO  L78                 Accepts]: Start accepts. Automaton has 10704 states and 17810 transitions. Word has length 7026
[2023-11-29 00:48:39,205 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:48:39,205 INFO  L495      AbstractCegarLoop]: Abstraction has 10704 states and 17810 transitions.
[2023-11-29 00:48:39,206 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 898.4285714285714) internal successors, (6289), 7 states have internal predecessors, (6289), 0 states have call successors, (0), 0 states 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 00:48:39,206 INFO  L276                IsEmpty]: Start isEmpty. Operand 10704 states and 17810 transitions.
[2023-11-29 00:48:39,534 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7028
[2023-11-29 00:48:39,534 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:48:39,536 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 00:48:39,621 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-11-29 00:48:39,736 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-11-29 00:48:39,736 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:48:39,737 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:48:39,737 INFO  L85        PathProgramCache]: Analyzing trace with hash -1849964846, now seen corresponding path program 1 times
[2023-11-29 00:48:39,737 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:48:39,737 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384076183]
[2023-11-29 00:48:39,738 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:48:39,738 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:48:40,265 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:48:40,265 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316489090]
[2023-11-29 00:48:40,266 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:48:40,266 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:48:40,266 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:48:40,267 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:48:40,268 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-11-29 00:48:48,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:48:48,417 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35315 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:48:48,494 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:48:48,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked.
[2023-11-29 00:48:48,822 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:48:48,822 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:48:48,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384076183]
[2023-11-29 00:48:48,822 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:48:48,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316489090]
[2023-11-29 00:48:48,822 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [316489090] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:48:48,822 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:48:48,824 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:48:48,825 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29376737]
[2023-11-29 00:48:48,825 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:48:48,827 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:48:48,827 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:48:48,830 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:48:48,830 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:48:48,832 INFO  L87              Difference]: Start difference. First operand 10704 states and 17810 transitions. Second operand  has 7 states, 7 states have (on average 898.8571428571429) internal successors, (6292), 7 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 00:48:49,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:48:49,351 INFO  L93              Difference]: Finished difference Result 28871 states and 48030 transitions.
[2023-11-29 00:48:49,352 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:48:49,353 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 898.8571428571429) internal successors, (6292), 7 states have internal predecessors, (6292), 0 states have call successors, (0), 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 7027
[2023-11-29 00:48:49,358 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:48:49,371 INFO  L225             Difference]: With dead ends: 28871
[2023-11-29 00:48:49,372 INFO  L226             Difference]: Without dead ends: 19703
[2023-11-29 00:48:49,379 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7036 GetRequests, 7024 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:48:49,379 INFO  L413           NwaCegarLoop]: 17595 mSDtfsCounter, 43545 mSDsluCounter, 68524 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43545 SdHoareTripleChecker+Valid, 86119 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:48:49,379 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43545 Valid, 86119 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:48:49,396 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19703 states.
[2023-11-29 00:48:49,493 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 10706.
[2023-11-29 00:48:49,502 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10706 states, 10705 states have (on average 1.6638953759925268) internal successors, (17812), 10705 states have internal predecessors, (17812), 0 states have call successors, (0), 0 states 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 00:48:49,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10706 states to 10706 states and 17812 transitions.
[2023-11-29 00:48:49,513 INFO  L78                 Accepts]: Start accepts. Automaton has 10706 states and 17812 transitions. Word has length 7027
[2023-11-29 00:48:49,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:48:49,516 INFO  L495      AbstractCegarLoop]: Abstraction has 10706 states and 17812 transitions.
[2023-11-29 00:48:49,518 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 898.8571428571429) internal successors, (6292), 7 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states 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 00:48:49,518 INFO  L276                IsEmpty]: Start isEmpty. Operand 10706 states and 17812 transitions.
[2023-11-29 00:48:49,706 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7029
[2023-11-29 00:48:49,706 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:48:49,707 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 00:48:49,798 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2023-11-29 00:48:49,908 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-11-29 00:48:49,908 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:48:49,908 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:48:49,909 INFO  L85        PathProgramCache]: Analyzing trace with hash 1181142906, now seen corresponding path program 1 times
[2023-11-29 00:48:49,909 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:48:49,909 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903212538]
[2023-11-29 00:48:49,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:48:49,910 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:48:50,461 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:48:50,461 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770386656]
[2023-11-29 00:48:50,462 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:48:50,462 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:48:50,462 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:48:50,463 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:48:50,464 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-11-29 00:48:58,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:48:58,792 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35318 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:48:58,869 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:48:59,221 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked.
[2023-11-29 00:48:59,221 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:48:59,221 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:48:59,221 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903212538]
[2023-11-29 00:48:59,221 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:48:59,221 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770386656]
[2023-11-29 00:48:59,221 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [770386656] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:48:59,221 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:48:59,224 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:48:59,224 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783578123]
[2023-11-29 00:48:59,224 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:48:59,227 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:48:59,227 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:48:59,229 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:48:59,230 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:48:59,231 INFO  L87              Difference]: Start difference. First operand 10706 states and 17812 transitions. Second operand  has 7 states, 7 states have (on average 899.2857142857143) internal successors, (6295), 7 states have internal predecessors, (6295), 0 states have call successors, (0), 0 states 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 00:48:59,736 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:48:59,736 INFO  L93              Difference]: Finished difference Result 28877 states and 48036 transitions.
[2023-11-29 00:48:59,737 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:48:59,738 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 899.2857142857143) internal successors, (6295), 7 states have internal predecessors, (6295), 0 states have call successors, (0), 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 7028
[2023-11-29 00:48:59,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:48:59,755 INFO  L225             Difference]: With dead ends: 28877
[2023-11-29 00:48:59,755 INFO  L226             Difference]: Without dead ends: 19704
[2023-11-29 00:48:59,762 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7037 GetRequests, 7025 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:48:59,762 INFO  L413           NwaCegarLoop]: 17590 mSDtfsCounter, 43544 mSDsluCounter, 68509 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43544 SdHoareTripleChecker+Valid, 86099 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:48:59,762 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43544 Valid, 86099 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:48:59,780 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19704 states.
[2023-11-29 00:48:59,870 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19704 to 10708.
[2023-11-29 00:48:59,878 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10708 states, 10707 states have (on average 1.6637713645278789) internal successors, (17814), 10707 states have internal predecessors, (17814), 0 states have call successors, (0), 0 states 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 00:48:59,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10708 states to 10708 states and 17814 transitions.
[2023-11-29 00:48:59,889 INFO  L78                 Accepts]: Start accepts. Automaton has 10708 states and 17814 transitions. Word has length 7028
[2023-11-29 00:48:59,892 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:48:59,892 INFO  L495      AbstractCegarLoop]: Abstraction has 10708 states and 17814 transitions.
[2023-11-29 00:48:59,894 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 899.2857142857143) internal successors, (6295), 7 states have internal predecessors, (6295), 0 states have call successors, (0), 0 states 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 00:48:59,894 INFO  L276                IsEmpty]: Start isEmpty. Operand 10708 states and 17814 transitions.
[2023-11-29 00:49:00,263 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7030
[2023-11-29 00:49:00,264 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:49:00,265 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:49:00,352 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2023-11-29 00:49:00,465 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40
[2023-11-29 00:49:00,465 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:49:00,466 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:49:00,467 INFO  L85        PathProgramCache]: Analyzing trace with hash 707060590, now seen corresponding path program 1 times
[2023-11-29 00:49:00,467 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:49:00,467 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849195100]
[2023-11-29 00:49:00,467 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:00,467 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:49:01,005 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:49:01,005 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243681599]
[2023-11-29 00:49:01,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:01,007 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:49:01,007 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:49:01,007 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:49:01,009 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-11-29 00:49:09,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:49:09,350 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35322 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:49:09,428 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:49:09,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked.
[2023-11-29 00:49:09,785 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:49:09,786 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:49:09,786 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849195100]
[2023-11-29 00:49:09,786 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:49:09,786 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243681599]
[2023-11-29 00:49:09,786 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [243681599] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:49:09,786 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:49:09,788 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:49:09,788 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409636063]
[2023-11-29 00:49:09,788 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:49:09,791 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:49:09,791 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:49:09,794 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:49:09,794 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:49:09,795 INFO  L87              Difference]: Start difference. First operand 10708 states and 17814 transitions. Second operand  has 7 states, 7 states have (on average 899.7142857142857) internal successors, (6298), 7 states have internal predecessors, (6298), 0 states have call successors, (0), 0 states 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 00:49:10,322 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:49:10,322 INFO  L93              Difference]: Finished difference Result 28883 states and 48042 transitions.
[2023-11-29 00:49:10,322 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:49:10,324 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 899.7142857142857) internal successors, (6298), 7 states have internal predecessors, (6298), 0 states have call successors, (0), 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 7029
[2023-11-29 00:49:10,328 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:49:10,341 INFO  L225             Difference]: With dead ends: 28883
[2023-11-29 00:49:10,341 INFO  L226             Difference]: Without dead ends: 19705
[2023-11-29 00:49:10,348 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7038 GetRequests, 7026 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:49:10,348 INFO  L413           NwaCegarLoop]: 17585 mSDtfsCounter, 43543 mSDsluCounter, 68494 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43543 SdHoareTripleChecker+Valid, 86079 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:49:10,348 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43543 Valid, 86079 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:49:10,364 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19705 states.
[2023-11-29 00:49:10,449 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19705 to 10710.
[2023-11-29 00:49:10,457 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10710 states, 10709 states have (on average 1.663647399383696) internal successors, (17816), 10709 states have internal predecessors, (17816), 0 states have call successors, (0), 0 states 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 00:49:10,468 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10710 states to 10710 states and 17816 transitions.
[2023-11-29 00:49:10,468 INFO  L78                 Accepts]: Start accepts. Automaton has 10710 states and 17816 transitions. Word has length 7029
[2023-11-29 00:49:10,471 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:49:10,471 INFO  L495      AbstractCegarLoop]: Abstraction has 10710 states and 17816 transitions.
[2023-11-29 00:49:10,472 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 899.7142857142857) internal successors, (6298), 7 states have internal predecessors, (6298), 0 states have call successors, (0), 0 states 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 00:49:10,472 INFO  L276                IsEmpty]: Start isEmpty. Operand 10710 states and 17816 transitions.
[2023-11-29 00:49:10,660 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7031
[2023-11-29 00:49:10,660 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:49:10,662 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 00:49:10,749 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2023-11-29 00:49:10,862 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41
[2023-11-29 00:49:10,863 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:49:10,863 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:49:10,864 INFO  L85        PathProgramCache]: Analyzing trace with hash -2111916062, now seen corresponding path program 1 times
[2023-11-29 00:49:10,864 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:49:10,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887059674]
[2023-11-29 00:49:10,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:10,865 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:49:11,394 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:49:11,394 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144953892]
[2023-11-29 00:49:11,395 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:11,395 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:49:11,395 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:49:11,396 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:49:11,396 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-11-29 00:49:19,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:49:19,734 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35325 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 00:49:19,818 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:49:20,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked.
[2023-11-29 00:49:20,178 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:49:20,178 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:49:20,179 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887059674]
[2023-11-29 00:49:20,179 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:49:20,179 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144953892]
[2023-11-29 00:49:20,179 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144953892] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:49:20,179 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:49:20,181 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 00:49:20,181 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15223359]
[2023-11-29 00:49:20,181 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:49:20,183 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 00:49:20,184 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:49:20,187 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 00:49:20,187 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 00:49:20,188 INFO  L87              Difference]: Start difference. First operand 10710 states and 17816 transitions. Second operand  has 8 states, 8 states have (on average 787.625) internal successors, (6301), 8 states have internal predecessors, (6301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:49:20,771 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:49:20,771 INFO  L93              Difference]: Finished difference Result 28889 states and 48048 transitions.
[2023-11-29 00:49:20,771 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:49:20,773 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 787.625) internal successors, (6301), 8 states have internal predecessors, (6301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7030
[2023-11-29 00:49:20,778 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:49:20,791 INFO  L225             Difference]: With dead ends: 28889
[2023-11-29 00:49:20,791 INFO  L226             Difference]: Without dead ends: 19706
[2023-11-29 00:49:20,797 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7039 GetRequests, 7026 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 00:49:20,798 INFO  L413           NwaCegarLoop]: 17580 mSDtfsCounter, 43542 mSDsluCounter, 83419 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43542 SdHoareTripleChecker+Valid, 100999 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:49:20,798 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43542 Valid, 100999 Invalid, 54 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:49:20,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19706 states.
[2023-11-29 00:49:20,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19706 to 10712.
[2023-11-29 00:49:20,917 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10712 states, 10711 states have (on average 1.6635234805340304) internal successors, (17818), 10711 states have internal predecessors, (17818), 0 states have call successors, (0), 0 states 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 00:49:20,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10712 states to 10712 states and 17818 transitions.
[2023-11-29 00:49:20,928 INFO  L78                 Accepts]: Start accepts. Automaton has 10712 states and 17818 transitions. Word has length 7030
[2023-11-29 00:49:20,931 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:49:20,932 INFO  L495      AbstractCegarLoop]: Abstraction has 10712 states and 17818 transitions.
[2023-11-29 00:49:20,933 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 787.625) internal successors, (6301), 8 states have internal predecessors, (6301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:49:20,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 10712 states and 17818 transitions.
[2023-11-29 00:49:21,290 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7032
[2023-11-29 00:49:21,290 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:49:21,291 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 00:49:21,383 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-11-29 00:49:21,491 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42
[2023-11-29 00:49:21,492 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:49:21,492 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:49:21,493 INFO  L85        PathProgramCache]: Analyzing trace with hash -947554808, now seen corresponding path program 1 times
[2023-11-29 00:49:21,493 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:49:21,493 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579006566]
[2023-11-29 00:49:21,494 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:21,494 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:49:22,078 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:49:22,079 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289389903]
[2023-11-29 00:49:22,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:22,080 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:49:22,080 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:49:22,081 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:49:22,082 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-11-29 00:49:30,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:49:30,326 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35328 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:49:30,404 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:49:30,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked.
[2023-11-29 00:49:30,748 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:49:30,749 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:49:30,749 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579006566]
[2023-11-29 00:49:30,749 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:49:30,749 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289389903]
[2023-11-29 00:49:30,749 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289389903] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:49:30,749 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:49:30,751 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:49:30,751 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111324394]
[2023-11-29 00:49:30,751 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:49:30,754 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:49:30,754 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:49:30,756 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:49:30,756 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:49:30,757 INFO  L87              Difference]: Start difference. First operand 10712 states and 17818 transitions. Second operand  has 7 states, 7 states have (on average 900.5714285714286) internal successors, (6304), 7 states have internal predecessors, (6304), 0 states have call successors, (0), 0 states 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 00:49:31,281 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:49:31,281 INFO  L93              Difference]: Finished difference Result 28895 states and 48054 transitions.
[2023-11-29 00:49:31,282 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:49:31,283 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 900.5714285714286) internal successors, (6304), 7 states have internal predecessors, (6304), 0 states have call successors, (0), 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 7031
[2023-11-29 00:49:31,288 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:49:31,300 INFO  L225             Difference]: With dead ends: 28895
[2023-11-29 00:49:31,300 INFO  L226             Difference]: Without dead ends: 19707
[2023-11-29 00:49:31,307 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7040 GetRequests, 7028 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:49:31,307 INFO  L413           NwaCegarLoop]: 17575 mSDtfsCounter, 43541 mSDsluCounter, 68464 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43541 SdHoareTripleChecker+Valid, 86039 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:49:31,308 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43541 Valid, 86039 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:49:31,323 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19707 states.
[2023-11-29 00:49:31,408 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19707 to 10714.
[2023-11-29 00:49:31,416 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10714 states, 10713 states have (on average 1.6633996079529543) internal successors, (17820), 10713 states have internal predecessors, (17820), 0 states have call successors, (0), 0 states 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 00:49:31,427 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17820 transitions.
[2023-11-29 00:49:31,427 INFO  L78                 Accepts]: Start accepts. Automaton has 10714 states and 17820 transitions. Word has length 7031
[2023-11-29 00:49:31,430 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:49:31,430 INFO  L495      AbstractCegarLoop]: Abstraction has 10714 states and 17820 transitions.
[2023-11-29 00:49:31,431 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 900.5714285714286) internal successors, (6304), 7 states have internal predecessors, (6304), 0 states have call successors, (0), 0 states 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 00:49:31,431 INFO  L276                IsEmpty]: Start isEmpty. Operand 10714 states and 17820 transitions.
[2023-11-29 00:49:31,774 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7033
[2023-11-29 00:49:31,774 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:49:31,776 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 00:49:31,866 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0
[2023-11-29 00:49:31,976 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:49:31,977 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:49:31,977 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:49:31,978 INFO  L85        PathProgramCache]: Analyzing trace with hash 418237000, now seen corresponding path program 1 times
[2023-11-29 00:49:31,978 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:49:31,978 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062656172]
[2023-11-29 00:49:31,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:31,979 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:49:32,522 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:49:32,523 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795291468]
[2023-11-29 00:49:32,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:32,524 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:49:32,524 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:49:32,525 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:49:32,526 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2023-11-29 00:49:40,576 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:49:40,782 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35331 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:49:40,860 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:49:41,207 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked.
[2023-11-29 00:49:41,207 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:49:41,207 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:49:41,207 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062656172]
[2023-11-29 00:49:41,207 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:49:41,207 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795291468]
[2023-11-29 00:49:41,207 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795291468] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:49:41,207 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:49:41,209 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:49:41,209 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975731120]
[2023-11-29 00:49:41,209 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:49:41,212 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:49:41,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:49:41,215 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:49:41,215 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:49:41,216 INFO  L87              Difference]: Start difference. First operand 10714 states and 17820 transitions. Second operand  has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 0 states have call successors, (0), 0 states 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 00:49:41,916 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:49:41,916 INFO  L93              Difference]: Finished difference Result 28901 states and 48060 transitions.
[2023-11-29 00:49:41,916 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:49:41,917 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 0 states have call successors, (0), 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 7032
[2023-11-29 00:49:41,922 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:49:41,933 INFO  L225             Difference]: With dead ends: 28901
[2023-11-29 00:49:41,933 INFO  L226             Difference]: Without dead ends: 19708
[2023-11-29 00:49:41,939 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7041 GetRequests, 7029 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:49:41,939 INFO  L413           NwaCegarLoop]: 17570 mSDtfsCounter, 43540 mSDsluCounter, 68449 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43540 SdHoareTripleChecker+Valid, 86019 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:49:41,939 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43540 Valid, 86019 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:49:41,954 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19708 states.
[2023-11-29 00:49:42,038 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19708 to 10716.
[2023-11-29 00:49:42,047 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10716 states, 10715 states have (on average 1.6632757816145591) internal successors, (17822), 10715 states have internal predecessors, (17822), 0 states have call successors, (0), 0 states 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 00:49:42,057 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10716 states to 10716 states and 17822 transitions.
[2023-11-29 00:49:42,057 INFO  L78                 Accepts]: Start accepts. Automaton has 10716 states and 17822 transitions. Word has length 7032
[2023-11-29 00:49:42,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:49:42,060 INFO  L495      AbstractCegarLoop]: Abstraction has 10716 states and 17822 transitions.
[2023-11-29 00:49:42,061 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 0 states have call successors, (0), 0 states 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 00:49:42,061 INFO  L276                IsEmpty]: Start isEmpty. Operand 10716 states and 17822 transitions.
[2023-11-29 00:49:42,249 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7034
[2023-11-29 00:49:42,249 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:49:42,251 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:49:42,337 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0
[2023-11-29 00:49:42,451 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:49:42,451 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:49:42,451 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:49:42,452 INFO  L85        PathProgramCache]: Analyzing trace with hash -1734509660, now seen corresponding path program 1 times
[2023-11-29 00:49:42,452 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:49:42,452 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514330601]
[2023-11-29 00:49:42,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:42,454 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:49:42,985 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:49:42,985 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900101919]
[2023-11-29 00:49:42,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:42,986 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:49:42,986 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:49:42,987 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:49:42,988 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-11-29 00:49:51,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:49:51,413 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35335 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:49:51,489 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:49:51,831 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked.
[2023-11-29 00:49:51,831 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:49:51,831 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:49:51,831 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514330601]
[2023-11-29 00:49:51,831 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:49:51,831 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900101919]
[2023-11-29 00:49:51,831 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900101919] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:49:51,831 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:49:51,834 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:49:51,834 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948482241]
[2023-11-29 00:49:51,834 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:49:51,837 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:49:51,837 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:49:51,839 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:49:51,839 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:49:51,840 INFO  L87              Difference]: Start difference. First operand 10716 states and 17822 transitions. Second operand  has 7 states, 7 states have (on average 901.4285714285714) internal successors, (6310), 7 states have internal predecessors, (6310), 0 states have call successors, (0), 0 states 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 00:49:52,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:49:52,351 INFO  L93              Difference]: Finished difference Result 28907 states and 48066 transitions.
[2023-11-29 00:49:52,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:49:52,353 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 901.4285714285714) internal successors, (6310), 7 states have internal predecessors, (6310), 0 states have call successors, (0), 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 7033
[2023-11-29 00:49:52,357 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:49:52,370 INFO  L225             Difference]: With dead ends: 28907
[2023-11-29 00:49:52,370 INFO  L226             Difference]: Without dead ends: 19709
[2023-11-29 00:49:52,377 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7042 GetRequests, 7030 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:49:52,377 INFO  L413           NwaCegarLoop]: 17565 mSDtfsCounter, 43539 mSDsluCounter, 68434 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43539 SdHoareTripleChecker+Valid, 85999 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:49:52,377 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43539 Valid, 85999 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:49:52,392 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19709 states.
[2023-11-29 00:49:52,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19709 to 10718.
[2023-11-29 00:49:52,486 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10718 states, 10717 states have (on average 1.663152001492955) internal successors, (17824), 10717 states have internal predecessors, (17824), 0 states have call successors, (0), 0 states 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 00:49:52,497 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10718 states to 10718 states and 17824 transitions.
[2023-11-29 00:49:52,497 INFO  L78                 Accepts]: Start accepts. Automaton has 10718 states and 17824 transitions. Word has length 7033
[2023-11-29 00:49:52,500 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:49:52,500 INFO  L495      AbstractCegarLoop]: Abstraction has 10718 states and 17824 transitions.
[2023-11-29 00:49:52,501 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 901.4285714285714) internal successors, (6310), 7 states have internal predecessors, (6310), 0 states have call successors, (0), 0 states 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 00:49:52,501 INFO  L276                IsEmpty]: Start isEmpty. Operand 10718 states and 17824 transitions.
[2023-11-29 00:49:52,828 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7035
[2023-11-29 00:49:52,828 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:49:52,829 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 00:49:52,917 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0
[2023-11-29 00:49:53,029 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:49:53,030 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:49:53,030 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:49:53,031 INFO  L85        PathProgramCache]: Analyzing trace with hash 1874969520, now seen corresponding path program 1 times
[2023-11-29 00:49:53,031 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:49:53,031 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128191320]
[2023-11-29 00:49:53,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:53,032 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:49:53,562 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:49:53,563 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579576998]
[2023-11-29 00:49:53,564 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:49:53,564 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:49:53,564 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:49:53,565 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:49:53,565 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-11-29 00:50:01,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:50:01,893 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35338 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:50:01,971 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:50:02,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked.
[2023-11-29 00:50:02,305 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:50:02,305 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:50:02,305 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128191320]
[2023-11-29 00:50:02,306 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:50:02,306 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579576998]
[2023-11-29 00:50:02,306 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579576998] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:50:02,306 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:50:02,307 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:50:02,308 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540330543]
[2023-11-29 00:50:02,308 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:50:02,310 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:50:02,310 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:50:02,313 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:50:02,313 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:50:02,314 INFO  L87              Difference]: Start difference. First operand 10718 states and 17824 transitions. Second operand  has 7 states, 7 states have (on average 901.8571428571429) internal successors, (6313), 7 states have internal predecessors, (6313), 0 states have call successors, (0), 0 states 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 00:50:02,820 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:50:02,820 INFO  L93              Difference]: Finished difference Result 28913 states and 48072 transitions.
[2023-11-29 00:50:02,820 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:50:02,822 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 901.8571428571429) internal successors, (6313), 7 states have internal predecessors, (6313), 0 states have call successors, (0), 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 7034
[2023-11-29 00:50:02,826 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:50:02,839 INFO  L225             Difference]: With dead ends: 28913
[2023-11-29 00:50:02,839 INFO  L226             Difference]: Without dead ends: 19710
[2023-11-29 00:50:02,845 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7043 GetRequests, 7031 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:50:02,845 INFO  L413           NwaCegarLoop]: 17560 mSDtfsCounter, 43538 mSDsluCounter, 68419 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43538 SdHoareTripleChecker+Valid, 85979 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:50:02,845 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43538 Valid, 85979 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:50:02,861 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19710 states.
[2023-11-29 00:50:02,953 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19710 to 10720.
[2023-11-29 00:50:02,962 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10720 states, 10719 states have (on average 1.6630282675622725) internal successors, (17826), 10719 states have internal predecessors, (17826), 0 states have call successors, (0), 0 states 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 00:50:02,973 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10720 states to 10720 states and 17826 transitions.
[2023-11-29 00:50:02,973 INFO  L78                 Accepts]: Start accepts. Automaton has 10720 states and 17826 transitions. Word has length 7034
[2023-11-29 00:50:02,976 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:50:02,976 INFO  L495      AbstractCegarLoop]: Abstraction has 10720 states and 17826 transitions.
[2023-11-29 00:50:02,978 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 901.8571428571429) internal successors, (6313), 7 states have internal predecessors, (6313), 0 states have call successors, (0), 0 states 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 00:50:02,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 10720 states and 17826 transitions.
[2023-11-29 00:50:03,167 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7036
[2023-11-29 00:50:03,167 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:50:03,168 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 00:50:03,259 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0
[2023-11-29 00:50:03,368 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:50:03,369 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:50:03,369 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:50:03,370 INFO  L85        PathProgramCache]: Analyzing trace with hash 1471490622, now seen corresponding path program 1 times
[2023-11-29 00:50:03,370 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:50:03,370 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036482849]
[2023-11-29 00:50:03,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:03,371 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:50:03,920 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:50:03,920 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184661589]
[2023-11-29 00:50:03,921 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:03,921 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:50:03,921 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:50:03,922 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:50:03,922 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-11-29 00:50:12,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:50:12,480 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35341 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:50:12,566 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:50:12,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked.
[2023-11-29 00:50:12,935 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:50:12,935 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:50:12,935 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036482849]
[2023-11-29 00:50:12,935 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:50:12,935 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184661589]
[2023-11-29 00:50:12,935 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184661589] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:50:12,935 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:50:12,937 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:50:12,937 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14349168]
[2023-11-29 00:50:12,937 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:50:12,940 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:50:12,940 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:50:12,943 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:50:12,943 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:50:12,944 INFO  L87              Difference]: Start difference. First operand 10720 states and 17826 transitions. Second operand  has 7 states, 7 states have (on average 902.2857142857143) internal successors, (6316), 7 states have internal predecessors, (6316), 0 states have call successors, (0), 0 states 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 00:50:13,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:50:13,469 INFO  L93              Difference]: Finished difference Result 28919 states and 48078 transitions.
[2023-11-29 00:50:13,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:50:13,471 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 902.2857142857143) internal successors, (6316), 7 states have internal predecessors, (6316), 0 states have call successors, (0), 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 7035
[2023-11-29 00:50:13,476 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:50:13,488 INFO  L225             Difference]: With dead ends: 28919
[2023-11-29 00:50:13,489 INFO  L226             Difference]: Without dead ends: 19711
[2023-11-29 00:50:13,616 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7044 GetRequests, 7032 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:50:13,617 INFO  L413           NwaCegarLoop]: 17555 mSDtfsCounter, 43537 mSDsluCounter, 68404 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43537 SdHoareTripleChecker+Valid, 85959 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:50:13,617 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43537 Valid, 85959 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:50:13,630 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19711 states.
[2023-11-29 00:50:13,705 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19711 to 10722.
[2023-11-29 00:50:13,713 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10722 states, 10721 states have (on average 1.6629045797966608) internal successors, (17828), 10721 states have internal predecessors, (17828), 0 states have call successors, (0), 0 states 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 00:50:13,724 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10722 states to 10722 states and 17828 transitions.
[2023-11-29 00:50:13,724 INFO  L78                 Accepts]: Start accepts. Automaton has 10722 states and 17828 transitions. Word has length 7035
[2023-11-29 00:50:13,727 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:50:13,727 INFO  L495      AbstractCegarLoop]: Abstraction has 10722 states and 17828 transitions.
[2023-11-29 00:50:13,728 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 902.2857142857143) internal successors, (6316), 7 states have internal predecessors, (6316), 0 states have call successors, (0), 0 states 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 00:50:13,728 INFO  L276                IsEmpty]: Start isEmpty. Operand 10722 states and 17828 transitions.
[2023-11-29 00:50:13,916 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7037
[2023-11-29 00:50:13,916 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:50:13,917 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 00:50:14,004 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0
[2023-11-29 00:50:14,118 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47
[2023-11-29 00:50:14,118 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:50:14,118 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:50:14,119 INFO  L85        PathProgramCache]: Analyzing trace with hash 798005782, now seen corresponding path program 1 times
[2023-11-29 00:50:14,119 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:50:14,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476141739]
[2023-11-29 00:50:14,120 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:14,120 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:50:14,648 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:50:14,649 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899761808]
[2023-11-29 00:50:14,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:14,650 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:50:14,650 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:50:14,651 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:50:14,651 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-11-29 00:50:22,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:50:23,057 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35344 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:50:23,138 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:50:23,471 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked.
[2023-11-29 00:50:23,471 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:50:23,472 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:50:23,472 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476141739]
[2023-11-29 00:50:23,472 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:50:23,472 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899761808]
[2023-11-29 00:50:23,472 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899761808] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:50:23,472 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:50:23,474 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:50:23,474 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8307983]
[2023-11-29 00:50:23,474 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:50:23,478 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:50:23,478 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:50:23,480 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:50:23,481 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:50:23,482 INFO  L87              Difference]: Start difference. First operand 10722 states and 17828 transitions. Second operand  has 7 states, 7 states have (on average 902.7142857142857) internal successors, (6319), 7 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states 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 00:50:23,998 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:50:23,998 INFO  L93              Difference]: Finished difference Result 28925 states and 48084 transitions.
[2023-11-29 00:50:23,999 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:50:24,000 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 902.7142857142857) internal successors, (6319), 7 states have internal predecessors, (6319), 0 states have call successors, (0), 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 7036
[2023-11-29 00:50:24,005 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:50:24,018 INFO  L225             Difference]: With dead ends: 28925
[2023-11-29 00:50:24,018 INFO  L226             Difference]: Without dead ends: 19712
[2023-11-29 00:50:24,025 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7045 GetRequests, 7033 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:50:24,025 INFO  L413           NwaCegarLoop]: 17550 mSDtfsCounter, 43536 mSDsluCounter, 68389 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43536 SdHoareTripleChecker+Valid, 85939 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:50:24,025 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43536 Valid, 85939 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:50:24,040 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19712 states.
[2023-11-29 00:50:24,126 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19712 to 10724.
[2023-11-29 00:50:24,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10724 states, 10723 states have (on average 1.6627809381702883) internal successors, (17830), 10723 states have internal predecessors, (17830), 0 states have call successors, (0), 0 states 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 00:50:24,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10724 states to 10724 states and 17830 transitions.
[2023-11-29 00:50:24,145 INFO  L78                 Accepts]: Start accepts. Automaton has 10724 states and 17830 transitions. Word has length 7036
[2023-11-29 00:50:24,148 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:50:24,148 INFO  L495      AbstractCegarLoop]: Abstraction has 10724 states and 17830 transitions.
[2023-11-29 00:50:24,149 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 902.7142857142857) internal successors, (6319), 7 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states 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 00:50:24,149 INFO  L276                IsEmpty]: Start isEmpty. Operand 10724 states and 17830 transitions.
[2023-11-29 00:50:24,337 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7038
[2023-11-29 00:50:24,337 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:50:24,338 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 00:50:24,425 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0
[2023-11-29 00:50:24,539 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2023-11-29 00:50:24,539 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:50:24,539 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:50:24,540 INFO  L85        PathProgramCache]: Analyzing trace with hash -1649076006, now seen corresponding path program 1 times
[2023-11-29 00:50:24,540 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:50:24,540 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411932058]
[2023-11-29 00:50:24,541 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:24,541 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:50:25,069 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:50:25,069 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429622419]
[2023-11-29 00:50:25,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:25,071 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:50:25,071 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:50:25,071 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:50:25,073 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-11-29 00:50:33,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:50:33,314 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35348 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:50:33,391 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:50:33,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked.
[2023-11-29 00:50:33,752 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:50:33,752 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:50:33,752 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411932058]
[2023-11-29 00:50:33,752 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:50:33,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429622419]
[2023-11-29 00:50:33,753 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429622419] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:50:33,753 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:50:33,755 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:50:33,755 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006712037]
[2023-11-29 00:50:33,755 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:50:33,758 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:50:33,758 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:50:33,761 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:50:33,761 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:50:33,762 INFO  L87              Difference]: Start difference. First operand 10724 states and 17830 transitions. Second operand  has 7 states, 7 states have (on average 903.1428571428571) internal successors, (6322), 7 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states 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 00:50:34,286 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:50:34,287 INFO  L93              Difference]: Finished difference Result 28931 states and 48090 transitions.
[2023-11-29 00:50:34,287 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:50:34,288 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 903.1428571428571) internal successors, (6322), 7 states have internal predecessors, (6322), 0 states have call successors, (0), 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 7037
[2023-11-29 00:50:34,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:50:34,305 INFO  L225             Difference]: With dead ends: 28931
[2023-11-29 00:50:34,306 INFO  L226             Difference]: Without dead ends: 19713
[2023-11-29 00:50:34,312 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7046 GetRequests, 7034 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:50:34,313 INFO  L413           NwaCegarLoop]: 17545 mSDtfsCounter, 43535 mSDsluCounter, 68374 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43535 SdHoareTripleChecker+Valid, 85919 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:50:34,313 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43535 Valid, 85919 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:50:34,328 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19713 states.
[2023-11-29 00:50:34,414 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 10726.
[2023-11-29 00:50:34,422 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10726 states, 10725 states have (on average 1.6626573426573426) internal successors, (17832), 10725 states have internal predecessors, (17832), 0 states have call successors, (0), 0 states 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 00:50:34,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10726 states to 10726 states and 17832 transitions.
[2023-11-29 00:50:34,433 INFO  L78                 Accepts]: Start accepts. Automaton has 10726 states and 17832 transitions. Word has length 7037
[2023-11-29 00:50:34,436 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:50:34,436 INFO  L495      AbstractCegarLoop]: Abstraction has 10726 states and 17832 transitions.
[2023-11-29 00:50:34,437 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 903.1428571428571) internal successors, (6322), 7 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states 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 00:50:34,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 10726 states and 17832 transitions.
[2023-11-29 00:50:34,625 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7039
[2023-11-29 00:50:34,625 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:50:34,627 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 00:50:34,714 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0
[2023-11-29 00:50:34,827 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49
[2023-11-29 00:50:34,827 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:50:34,827 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:50:34,829 INFO  L85        PathProgramCache]: Analyzing trace with hash 74491006, now seen corresponding path program 1 times
[2023-11-29 00:50:34,829 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:50:34,829 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686741291]
[2023-11-29 00:50:34,830 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:34,830 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:50:35,387 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:50:35,387 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246258232]
[2023-11-29 00:50:35,388 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:35,388 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:50:35,388 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:50:35,389 INFO  L229       MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:50:35,390 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2023-11-29 00:50:43,506 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:50:43,713 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35351 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:50:43,790 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:50:44,155 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked.
[2023-11-29 00:50:44,155 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:50:44,155 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:50:44,155 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686741291]
[2023-11-29 00:50:44,155 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:50:44,155 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246258232]
[2023-11-29 00:50:44,155 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [246258232] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:50:44,155 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:50:44,158 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:50:44,158 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055284184]
[2023-11-29 00:50:44,158 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:50:44,161 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:50:44,161 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:50:44,163 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:50:44,164 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:50:44,165 INFO  L87              Difference]: Start difference. First operand 10726 states and 17832 transitions. Second operand  has 7 states, 7 states have (on average 903.5714285714286) internal successors, (6325), 7 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states 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 00:50:44,690 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:50:44,690 INFO  L93              Difference]: Finished difference Result 28937 states and 48096 transitions.
[2023-11-29 00:50:44,691 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:50:44,692 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 903.5714285714286) internal successors, (6325), 7 states have internal predecessors, (6325), 0 states have call successors, (0), 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 7038
[2023-11-29 00:50:44,696 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:50:44,709 INFO  L225             Difference]: With dead ends: 28937
[2023-11-29 00:50:44,709 INFO  L226             Difference]: Without dead ends: 19714
[2023-11-29 00:50:44,716 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7047 GetRequests, 7035 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:50:44,716 INFO  L413           NwaCegarLoop]: 17540 mSDtfsCounter, 43534 mSDsluCounter, 68359 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43534 SdHoareTripleChecker+Valid, 85899 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:50:44,716 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43534 Valid, 85899 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:50:44,732 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19714 states.
[2023-11-29 00:50:44,821 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19714 to 10728.
[2023-11-29 00:50:44,830 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10728 states, 10727 states have (on average 1.6625337932320314) internal successors, (17834), 10727 states have internal predecessors, (17834), 0 states have call successors, (0), 0 states 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 00:50:44,840 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10728 states to 10728 states and 17834 transitions.
[2023-11-29 00:50:44,840 INFO  L78                 Accepts]: Start accepts. Automaton has 10728 states and 17834 transitions. Word has length 7038
[2023-11-29 00:50:44,843 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:50:44,843 INFO  L495      AbstractCegarLoop]: Abstraction has 10728 states and 17834 transitions.
[2023-11-29 00:50:44,844 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 903.5714285714286) internal successors, (6325), 7 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states 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 00:50:44,844 INFO  L276                IsEmpty]: Start isEmpty. Operand 10728 states and 17834 transitions.
[2023-11-29 00:50:45,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7040
[2023-11-29 00:50:45,032 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:50:45,034 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 00:50:45,119 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0
[2023-11-29 00:50:45,234 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:50:45,234 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:50:45,235 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:50:45,235 INFO  L85        PathProgramCache]: Analyzing trace with hash -1352113292, now seen corresponding path program 1 times
[2023-11-29 00:50:45,235 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:50:45,235 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44646877]
[2023-11-29 00:50:45,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:45,236 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:50:45,767 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:50:45,767 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375709599]
[2023-11-29 00:50:45,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:45,769 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:50:45,769 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:50:45,769 INFO  L229       MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:50:45,770 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2023-11-29 00:50:53,945 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:50:54,150 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35354 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:50:54,228 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:50:54,558 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked.
[2023-11-29 00:50:54,558 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:50:54,558 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:50:54,558 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44646877]
[2023-11-29 00:50:54,558 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:50:54,558 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375709599]
[2023-11-29 00:50:54,558 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [375709599] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:50:54,558 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:50:54,560 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:50:54,560 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776866401]
[2023-11-29 00:50:54,561 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:50:54,563 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:50:54,563 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:50:54,566 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:50:54,566 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:50:54,568 INFO  L87              Difference]: Start difference. First operand 10728 states and 17834 transitions. Second operand  has 7 states, 7 states have (on average 904.0) internal successors, (6328), 7 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states 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 00:50:55,075 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:50:55,075 INFO  L93              Difference]: Finished difference Result 28943 states and 48102 transitions.
[2023-11-29 00:50:55,075 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:50:55,077 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 904.0) internal successors, (6328), 7 states have internal predecessors, (6328), 0 states have call successors, (0), 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 7039
[2023-11-29 00:50:55,081 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:50:55,094 INFO  L225             Difference]: With dead ends: 28943
[2023-11-29 00:50:55,094 INFO  L226             Difference]: Without dead ends: 19715
[2023-11-29 00:50:55,101 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7048 GetRequests, 7036 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:50:55,101 INFO  L413           NwaCegarLoop]: 17535 mSDtfsCounter, 43533 mSDsluCounter, 68344 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43533 SdHoareTripleChecker+Valid, 85879 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:50:55,101 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43533 Valid, 85879 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:50:55,117 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19715 states.
[2023-11-29 00:50:55,205 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19715 to 10730.
[2023-11-29 00:50:55,213 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10730 states, 10729 states have (on average 1.6624102898685804) internal successors, (17836), 10729 states have internal predecessors, (17836), 0 states have call successors, (0), 0 states 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 00:50:55,224 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10730 states to 10730 states and 17836 transitions.
[2023-11-29 00:50:55,224 INFO  L78                 Accepts]: Start accepts. Automaton has 10730 states and 17836 transitions. Word has length 7039
[2023-11-29 00:50:55,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:50:55,227 INFO  L495      AbstractCegarLoop]: Abstraction has 10730 states and 17836 transitions.
[2023-11-29 00:50:55,228 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 904.0) internal successors, (6328), 7 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states 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 00:50:55,228 INFO  L276                IsEmpty]: Start isEmpty. Operand 10730 states and 17836 transitions.
[2023-11-29 00:50:55,416 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7041
[2023-11-29 00:50:55,417 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:50:55,418 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 00:50:55,505 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0
[2023-11-29 00:50:55,618 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:50:55,619 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:50:55,619 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:50:55,619 INFO  L85        PathProgramCache]: Analyzing trace with hash -690307356, now seen corresponding path program 1 times
[2023-11-29 00:50:55,620 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:50:55,620 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567464820]
[2023-11-29 00:50:55,620 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:55,620 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:50:56,150 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:50:56,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858056119]
[2023-11-29 00:50:56,152 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:50:56,152 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:50:56,152 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:50:56,153 INFO  L229       MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:50:56,153 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2023-11-29 00:51:04,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:51:04,547 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35357 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:51:04,625 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:51:04,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked.
[2023-11-29 00:51:04,971 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:51:04,971 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:51:04,972 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567464820]
[2023-11-29 00:51:04,972 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:51:04,972 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858056119]
[2023-11-29 00:51:04,972 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858056119] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:51:04,972 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:51:04,974 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:51:04,974 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439642998]
[2023-11-29 00:51:04,974 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:51:04,976 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:51:04,976 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:51:04,979 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:51:04,979 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:51:04,980 INFO  L87              Difference]: Start difference. First operand 10730 states and 17836 transitions. Second operand  has 7 states, 7 states have (on average 904.4285714285714) internal successors, (6331), 7 states have internal predecessors, (6331), 0 states have call successors, (0), 0 states 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 00:51:05,494 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:51:05,494 INFO  L93              Difference]: Finished difference Result 28949 states and 48108 transitions.
[2023-11-29 00:51:05,494 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:51:05,496 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 904.4285714285714) internal successors, (6331), 7 states have internal predecessors, (6331), 0 states have call successors, (0), 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 7040
[2023-11-29 00:51:05,500 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:51:05,513 INFO  L225             Difference]: With dead ends: 28949
[2023-11-29 00:51:05,513 INFO  L226             Difference]: Without dead ends: 19716
[2023-11-29 00:51:05,520 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7049 GetRequests, 7037 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:51:05,520 INFO  L413           NwaCegarLoop]: 17530 mSDtfsCounter, 43532 mSDsluCounter, 68329 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43532 SdHoareTripleChecker+Valid, 85859 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:51:05,520 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43532 Valid, 85859 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:51:05,535 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19716 states.
[2023-11-29 00:51:05,621 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19716 to 10732.
[2023-11-29 00:51:05,630 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10732 states, 10731 states have (on average 1.6622868325412357) internal successors, (17838), 10731 states have internal predecessors, (17838), 0 states have call successors, (0), 0 states 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 00:51:05,640 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10732 states to 10732 states and 17838 transitions.
[2023-11-29 00:51:05,640 INFO  L78                 Accepts]: Start accepts. Automaton has 10732 states and 17838 transitions. Word has length 7040
[2023-11-29 00:51:05,643 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:51:05,643 INFO  L495      AbstractCegarLoop]: Abstraction has 10732 states and 17838 transitions.
[2023-11-29 00:51:05,644 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 904.4285714285714) internal successors, (6331), 7 states have internal predecessors, (6331), 0 states have call successors, (0), 0 states 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 00:51:05,644 INFO  L276                IsEmpty]: Start isEmpty. Operand 10732 states and 17838 transitions.
[2023-11-29 00:51:05,833 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7042
[2023-11-29 00:51:05,833 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:51:05,834 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:51:05,921 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0
[2023-11-29 00:51:06,034 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:51:06,035 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:51:06,035 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:51:06,036 INFO  L85        PathProgramCache]: Analyzing trace with hash 1305033488, now seen corresponding path program 1 times
[2023-11-29 00:51:06,036 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:51:06,036 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568622961]
[2023-11-29 00:51:06,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:06,036 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:51:06,565 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:51:06,565 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859947494]
[2023-11-29 00:51:06,566 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:06,566 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:51:06,567 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:51:06,567 INFO  L229       MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:51:06,568 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-11-29 00:51:15,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:51:15,416 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35361 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:51:15,502 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:51:15,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked.
[2023-11-29 00:51:15,851 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:51:15,852 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:51:15,852 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568622961]
[2023-11-29 00:51:15,852 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:51:15,852 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859947494]
[2023-11-29 00:51:15,852 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [859947494] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:51:15,852 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:51:15,854 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:51:15,855 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945048981]
[2023-11-29 00:51:15,855 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:51:15,858 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:51:15,858 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:51:15,861 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:51:15,861 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:51:15,863 INFO  L87              Difference]: Start difference. First operand 10732 states and 17838 transitions. Second operand  has 7 states, 7 states have (on average 904.8571428571429) internal successors, (6334), 7 states have internal predecessors, (6334), 0 states have call successors, (0), 0 states 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 00:51:16,417 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:51:16,417 INFO  L93              Difference]: Finished difference Result 28955 states and 48114 transitions.
[2023-11-29 00:51:16,418 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:51:16,419 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 904.8571428571429) internal successors, (6334), 7 states have internal predecessors, (6334), 0 states have call successors, (0), 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 7041
[2023-11-29 00:51:16,424 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:51:16,439 INFO  L225             Difference]: With dead ends: 28955
[2023-11-29 00:51:16,439 INFO  L226             Difference]: Without dead ends: 19717
[2023-11-29 00:51:16,446 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7050 GetRequests, 7038 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:51:16,446 INFO  L413           NwaCegarLoop]: 17525 mSDtfsCounter, 43531 mSDsluCounter, 68314 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43531 SdHoareTripleChecker+Valid, 85839 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:51:16,446 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43531 Valid, 85839 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:51:16,463 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19717 states.
[2023-11-29 00:51:16,564 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19717 to 10734.
[2023-11-29 00:51:16,573 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10734 states, 10733 states have (on average 1.6621634212242615) internal successors, (17840), 10733 states have internal predecessors, (17840), 0 states have call successors, (0), 0 states 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 00:51:16,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10734 states to 10734 states and 17840 transitions.
[2023-11-29 00:51:16,585 INFO  L78                 Accepts]: Start accepts. Automaton has 10734 states and 17840 transitions. Word has length 7041
[2023-11-29 00:51:16,588 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:51:16,588 INFO  L495      AbstractCegarLoop]: Abstraction has 10734 states and 17840 transitions.
[2023-11-29 00:51:16,589 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 904.8571428571429) internal successors, (6334), 7 states have internal predecessors, (6334), 0 states have call successors, (0), 0 states 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 00:51:16,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 10734 states and 17840 transitions.
[2023-11-29 00:51:16,779 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7043
[2023-11-29 00:51:16,779 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:51:16,780 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 00:51:16,870 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-11-29 00:51:16,981 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:51:16,981 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:51:16,981 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:51:16,982 INFO  L85        PathProgramCache]: Analyzing trace with hash 133618252, now seen corresponding path program 1 times
[2023-11-29 00:51:16,982 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:51:16,982 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071692869]
[2023-11-29 00:51:16,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:16,983 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:51:17,623 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:51:17,623 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033950441]
[2023-11-29 00:51:17,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:17,624 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:51:17,624 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:51:17,625 INFO  L229       MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:51:17,626 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2023-11-29 00:51:25,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:51:25,914 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35364 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:51:25,998 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:51:26,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked.
[2023-11-29 00:51:26,355 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:51:26,355 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:51:26,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071692869]
[2023-11-29 00:51:26,355 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:51:26,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033950441]
[2023-11-29 00:51:26,355 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033950441] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:51:26,355 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:51:26,358 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:51:26,358 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278371831]
[2023-11-29 00:51:26,358 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:51:26,362 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:51:26,362 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:51:26,365 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:51:26,365 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:51:26,367 INFO  L87              Difference]: Start difference. First operand 10734 states and 17840 transitions. Second operand  has 7 states, 7 states have (on average 905.2857142857143) internal successors, (6337), 7 states have internal predecessors, (6337), 0 states have call successors, (0), 0 states 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 00:51:26,913 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:51:26,913 INFO  L93              Difference]: Finished difference Result 28961 states and 48120 transitions.
[2023-11-29 00:51:26,913 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:51:26,915 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 905.2857142857143) internal successors, (6337), 7 states have internal predecessors, (6337), 0 states have call successors, (0), 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 7042
[2023-11-29 00:51:26,919 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:51:26,932 INFO  L225             Difference]: With dead ends: 28961
[2023-11-29 00:51:26,932 INFO  L226             Difference]: Without dead ends: 19718
[2023-11-29 00:51:26,940 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7051 GetRequests, 7039 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:51:26,940 INFO  L413           NwaCegarLoop]: 17520 mSDtfsCounter, 43530 mSDsluCounter, 68299 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43530 SdHoareTripleChecker+Valid, 85819 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:51:26,941 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43530 Valid, 85819 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:51:26,959 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19718 states.
[2023-11-29 00:51:27,059 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19718 to 10736.
[2023-11-29 00:51:27,068 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10736 states, 10735 states have (on average 1.6620400558919421) internal successors, (17842), 10735 states have internal predecessors, (17842), 0 states have call successors, (0), 0 states 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 00:51:27,080 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10736 states to 10736 states and 17842 transitions.
[2023-11-29 00:51:27,080 INFO  L78                 Accepts]: Start accepts. Automaton has 10736 states and 17842 transitions. Word has length 7042
[2023-11-29 00:51:27,084 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:51:27,084 INFO  L495      AbstractCegarLoop]: Abstraction has 10736 states and 17842 transitions.
[2023-11-29 00:51:27,085 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 905.2857142857143) internal successors, (6337), 7 states have internal predecessors, (6337), 0 states have call successors, (0), 0 states 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 00:51:27,085 INFO  L276                IsEmpty]: Start isEmpty. Operand 10736 states and 17842 transitions.
[2023-11-29 00:51:27,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7044
[2023-11-29 00:51:27,276 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:51:27,277 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 00:51:27,377 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0
[2023-11-29 00:51:27,477 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54
[2023-11-29 00:51:27,478 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:51:27,478 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:51:27,479 INFO  L85        PathProgramCache]: Analyzing trace with hash 888971690, now seen corresponding path program 1 times
[2023-11-29 00:51:27,479 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:51:27,479 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179544350]
[2023-11-29 00:51:27,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:27,480 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:51:28,030 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:51:28,030 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128506984]
[2023-11-29 00:51:28,031 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:28,031 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:51:28,031 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:51:28,032 INFO  L229       MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:51:28,033 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2023-11-29 00:51:36,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:51:36,890 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35367 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:51:36,979 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:51:37,344 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked.
[2023-11-29 00:51:37,344 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:51:37,344 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:51:37,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179544350]
[2023-11-29 00:51:37,344 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:51:37,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128506984]
[2023-11-29 00:51:37,344 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128506984] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:51:37,344 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:51:37,346 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:51:37,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345065377]
[2023-11-29 00:51:37,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:51:37,349 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:51:37,350 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:51:37,353 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:51:37,353 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:51:37,355 INFO  L87              Difference]: Start difference. First operand 10736 states and 17842 transitions. Second operand  has 7 states, 7 states have (on average 905.7142857142857) internal successors, (6340), 7 states have internal predecessors, (6340), 0 states have call successors, (0), 0 states 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 00:51:37,913 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:51:37,914 INFO  L93              Difference]: Finished difference Result 28967 states and 48126 transitions.
[2023-11-29 00:51:37,914 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:51:37,915 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 905.7142857142857) internal successors, (6340), 7 states have internal predecessors, (6340), 0 states have call successors, (0), 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 7043
[2023-11-29 00:51:37,920 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:51:37,935 INFO  L225             Difference]: With dead ends: 28967
[2023-11-29 00:51:37,935 INFO  L226             Difference]: Without dead ends: 19719
[2023-11-29 00:51:37,942 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7052 GetRequests, 7040 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:51:37,942 INFO  L413           NwaCegarLoop]: 17515 mSDtfsCounter, 43529 mSDsluCounter, 68284 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43529 SdHoareTripleChecker+Valid, 85799 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:51:37,942 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43529 Valid, 85799 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:51:37,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19719 states.
[2023-11-29 00:51:38,064 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19719 to 10738.
[2023-11-29 00:51:38,074 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10738 states, 10737 states have (on average 1.6619167365185805) internal successors, (17844), 10737 states have internal predecessors, (17844), 0 states have call successors, (0), 0 states 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 00:51:38,086 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10738 states to 10738 states and 17844 transitions.
[2023-11-29 00:51:38,086 INFO  L78                 Accepts]: Start accepts. Automaton has 10738 states and 17844 transitions. Word has length 7043
[2023-11-29 00:51:38,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:51:38,090 INFO  L495      AbstractCegarLoop]: Abstraction has 10738 states and 17844 transitions.
[2023-11-29 00:51:38,091 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 905.7142857142857) internal successors, (6340), 7 states have internal predecessors, (6340), 0 states have call successors, (0), 0 states 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 00:51:38,091 INFO  L276                IsEmpty]: Start isEmpty. Operand 10738 states and 17844 transitions.
[2023-11-29 00:51:38,284 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7045
[2023-11-29 00:51:38,284 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:51:38,285 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 00:51:38,391 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0
[2023-11-29 00:51:38,486 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2023-11-29 00:51:38,486 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:51:38,486 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:51:38,487 INFO  L85        PathProgramCache]: Analyzing trace with hash 1553447090, now seen corresponding path program 1 times
[2023-11-29 00:51:38,487 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:51:38,487 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709477112]
[2023-11-29 00:51:38,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:38,488 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:51:39,168 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:51:39,168 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147478293]
[2023-11-29 00:51:39,169 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:39,169 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:51:39,170 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:51:39,170 INFO  L229       MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:51:39,171 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2023-11-29 00:51:47,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:51:47,810 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35370 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:51:47,898 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:51:48,246 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked.
[2023-11-29 00:51:48,246 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:51:48,247 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:51:48,247 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709477112]
[2023-11-29 00:51:48,247 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:51:48,247 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147478293]
[2023-11-29 00:51:48,247 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [147478293] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:51:48,247 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:51:48,249 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:51:48,249 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165602415]
[2023-11-29 00:51:48,249 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:51:48,252 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:51:48,252 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:51:48,255 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:51:48,255 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:51:48,257 INFO  L87              Difference]: Start difference. First operand 10738 states and 17844 transitions. Second operand  has 7 states, 7 states have (on average 906.1428571428571) internal successors, (6343), 7 states have internal predecessors, (6343), 0 states have call successors, (0), 0 states 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 00:51:48,788 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:51:48,788 INFO  L93              Difference]: Finished difference Result 28973 states and 48132 transitions.
[2023-11-29 00:51:48,788 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:51:48,790 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 906.1428571428571) internal successors, (6343), 7 states have internal predecessors, (6343), 0 states have call successors, (0), 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 7044
[2023-11-29 00:51:48,794 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:51:48,807 INFO  L225             Difference]: With dead ends: 28973
[2023-11-29 00:51:48,807 INFO  L226             Difference]: Without dead ends: 19720
[2023-11-29 00:51:48,814 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7053 GetRequests, 7041 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:51:48,814 INFO  L413           NwaCegarLoop]: 17510 mSDtfsCounter, 43528 mSDsluCounter, 68269 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43528 SdHoareTripleChecker+Valid, 85779 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:51:48,815 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43528 Valid, 85779 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:51:48,831 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19720 states.
[2023-11-29 00:51:48,929 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19720 to 10740.
[2023-11-29 00:51:48,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10740 states, 10739 states have (on average 1.661793463078499) internal successors, (17846), 10739 states have internal predecessors, (17846), 0 states have call successors, (0), 0 states 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 00:51:48,953 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10740 states to 10740 states and 17846 transitions.
[2023-11-29 00:51:48,953 INFO  L78                 Accepts]: Start accepts. Automaton has 10740 states and 17846 transitions. Word has length 7044
[2023-11-29 00:51:48,956 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:51:48,956 INFO  L495      AbstractCegarLoop]: Abstraction has 10740 states and 17846 transitions.
[2023-11-29 00:51:48,958 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 906.1428571428571) internal successors, (6343), 7 states have internal predecessors, (6343), 0 states have call successors, (0), 0 states 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 00:51:48,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 10740 states and 17846 transitions.
[2023-11-29 00:51:49,150 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7046
[2023-11-29 00:51:49,151 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:51:49,152 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 00:51:49,253 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0
[2023-11-29 00:51:49,356 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56
[2023-11-29 00:51:49,356 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:51:49,356 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:51:49,357 INFO  L85        PathProgramCache]: Analyzing trace with hash 1987535430, now seen corresponding path program 1 times
[2023-11-29 00:51:49,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:51:49,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309389969]
[2023-11-29 00:51:49,358 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:49,358 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:51:49,919 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:51:49,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808428284]
[2023-11-29 00:51:49,921 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:51:49,921 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:51:49,921 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:51:49,922 INFO  L229       MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:51:49,923 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2023-11-29 00:51:58,661 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:51:58,882 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35374 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:51:58,966 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:51:59,333 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked.
[2023-11-29 00:51:59,333 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:51:59,333 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:51:59,333 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309389969]
[2023-11-29 00:51:59,333 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:51:59,334 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808428284]
[2023-11-29 00:51:59,334 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808428284] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:51:59,334 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:51:59,335 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:51:59,336 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233849857]
[2023-11-29 00:51:59,336 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:51:59,338 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:51:59,339 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:51:59,342 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:51:59,342 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:51:59,343 INFO  L87              Difference]: Start difference. First operand 10740 states and 17846 transitions. Second operand  has 7 states, 7 states have (on average 906.5714285714286) internal successors, (6346), 7 states have internal predecessors, (6346), 0 states have call successors, (0), 0 states 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 00:51:59,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:51:59,896 INFO  L93              Difference]: Finished difference Result 28979 states and 48138 transitions.
[2023-11-29 00:51:59,896 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:51:59,898 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 906.5714285714286) internal successors, (6346), 7 states have internal predecessors, (6346), 0 states have call successors, (0), 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 7045
[2023-11-29 00:51:59,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:51:59,916 INFO  L225             Difference]: With dead ends: 28979
[2023-11-29 00:51:59,916 INFO  L226             Difference]: Without dead ends: 19721
[2023-11-29 00:51:59,923 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7054 GetRequests, 7042 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:51:59,923 INFO  L413           NwaCegarLoop]: 17505 mSDtfsCounter, 43527 mSDsluCounter, 68254 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43527 SdHoareTripleChecker+Valid, 85759 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:51:59,924 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43527 Valid, 85759 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:51:59,946 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19721 states.
[2023-11-29 00:52:00,078 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19721 to 10742.
[2023-11-29 00:52:00,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10742 states, 10741 states have (on average 1.6616702355460387) internal successors, (17848), 10741 states have internal predecessors, (17848), 0 states have call successors, (0), 0 states 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 00:52:00,098 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10742 states to 10742 states and 17848 transitions.
[2023-11-29 00:52:00,098 INFO  L78                 Accepts]: Start accepts. Automaton has 10742 states and 17848 transitions. Word has length 7045
[2023-11-29 00:52:00,102 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:52:00,102 INFO  L495      AbstractCegarLoop]: Abstraction has 10742 states and 17848 transitions.
[2023-11-29 00:52:00,103 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 906.5714285714286) internal successors, (6346), 7 states have internal predecessors, (6346), 0 states have call successors, (0), 0 states 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 00:52:00,103 INFO  L276                IsEmpty]: Start isEmpty. Operand 10742 states and 17848 transitions.
[2023-11-29 00:52:00,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7047
[2023-11-29 00:52:00,457 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:52:00,458 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 00:52:00,558 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0
[2023-11-29 00:52:00,658 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57
[2023-11-29 00:52:00,659 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:52:00,659 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:52:00,660 INFO  L85        PathProgramCache]: Analyzing trace with hash -1017125606, now seen corresponding path program 1 times
[2023-11-29 00:52:00,660 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:52:00,660 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459150916]
[2023-11-29 00:52:00,661 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:00,661 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:52:01,235 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:52:01,235 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944886773]
[2023-11-29 00:52:01,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:01,236 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:52:01,237 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:52:01,237 INFO  L229       MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:52:01,238 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2023-11-29 00:52:09,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:52:10,129 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35377 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 00:52:10,213 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:52:10,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked.
[2023-11-29 00:52:10,615 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:52:10,615 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:52:10,615 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459150916]
[2023-11-29 00:52:10,615 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:52:10,615 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944886773]
[2023-11-29 00:52:10,615 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944886773] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:52:10,616 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:52:10,617 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 00:52:10,617 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604379724]
[2023-11-29 00:52:10,618 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:52:10,620 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 00:52:10,621 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:52:10,624 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 00:52:10,624 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 00:52:10,625 INFO  L87              Difference]: Start difference. First operand 10742 states and 17848 transitions. Second operand  has 8 states, 8 states have (on average 793.625) internal successors, (6349), 8 states have internal predecessors, (6349), 0 states have call successors, (0), 0 states 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 00:52:11,257 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:52:11,257 INFO  L93              Difference]: Finished difference Result 28985 states and 48144 transitions.
[2023-11-29 00:52:11,258 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:52:11,259 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 793.625) internal successors, (6349), 8 states have internal predecessors, (6349), 0 states have call successors, (0), 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 7046
[2023-11-29 00:52:11,264 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:52:11,278 INFO  L225             Difference]: With dead ends: 28985
[2023-11-29 00:52:11,278 INFO  L226             Difference]: Without dead ends: 19722
[2023-11-29 00:52:11,286 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7055 GetRequests, 7042 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 00:52:11,286 INFO  L413           NwaCegarLoop]: 17500 mSDtfsCounter, 43526 mSDsluCounter, 85736 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43526 SdHoareTripleChecker+Valid, 103236 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:52:11,286 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43526 Valid, 103236 Invalid, 59 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:52:11,304 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19722 states.
[2023-11-29 00:52:11,408 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19722 to 10744.
[2023-11-29 00:52:11,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10744 states, 10743 states have (on average 1.66154705389556) internal successors, (17850), 10743 states have internal predecessors, (17850), 0 states have call successors, (0), 0 states 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 00:52:11,428 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 17850 transitions.
[2023-11-29 00:52:11,428 INFO  L78                 Accepts]: Start accepts. Automaton has 10744 states and 17850 transitions. Word has length 7046
[2023-11-29 00:52:11,431 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:52:11,432 INFO  L495      AbstractCegarLoop]: Abstraction has 10744 states and 17850 transitions.
[2023-11-29 00:52:11,433 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 793.625) internal successors, (6349), 8 states have internal predecessors, (6349), 0 states have call successors, (0), 0 states 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 00:52:11,433 INFO  L276                IsEmpty]: Start isEmpty. Operand 10744 states and 17850 transitions.
[2023-11-29 00:52:11,624 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7048
[2023-11-29 00:52:11,625 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:52:11,626 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 00:52:11,720 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0
[2023-11-29 00:52:11,826 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58
[2023-11-29 00:52:11,827 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:52:11,827 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:52:11,828 INFO  L85        PathProgramCache]: Analyzing trace with hash -1475386144, now seen corresponding path program 1 times
[2023-11-29 00:52:11,829 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:52:11,829 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132515534]
[2023-11-29 00:52:11,829 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:11,829 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:52:12,381 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:52:12,381 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815504394]
[2023-11-29 00:52:12,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:12,383 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:52:12,383 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:52:12,383 INFO  L229       MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:52:12,384 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2023-11-29 00:52:20,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:52:20,781 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35380 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:52:20,862 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:52:21,474 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked.
[2023-11-29 00:52:21,474 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:52:21,474 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:52:21,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132515534]
[2023-11-29 00:52:21,474 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:52:21,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815504394]
[2023-11-29 00:52:21,474 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [815504394] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:52:21,474 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:52:21,476 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:52:21,476 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567492354]
[2023-11-29 00:52:21,476 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:52:21,479 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:52:21,479 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:52:21,482 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:52:21,482 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:52:21,484 INFO  L87              Difference]: Start difference. First operand 10744 states and 17850 transitions. Second operand  has 7 states, 7 states have (on average 907.4285714285714) internal successors, (6352), 7 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states 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 00:52:22,045 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:52:22,045 INFO  L93              Difference]: Finished difference Result 28991 states and 48150 transitions.
[2023-11-29 00:52:22,045 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:52:22,047 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 907.4285714285714) internal successors, (6352), 7 states have internal predecessors, (6352), 0 states have call successors, (0), 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 7047
[2023-11-29 00:52:22,051 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:52:22,065 INFO  L225             Difference]: With dead ends: 28991
[2023-11-29 00:52:22,065 INFO  L226             Difference]: Without dead ends: 19723
[2023-11-29 00:52:22,072 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7056 GetRequests, 7044 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:52:22,072 INFO  L413           NwaCegarLoop]: 17495 mSDtfsCounter, 43525 mSDsluCounter, 68224 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43525 SdHoareTripleChecker+Valid, 85719 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:52:22,073 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43525 Valid, 85719 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:52:22,090 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19723 states.
[2023-11-29 00:52:22,193 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19723 to 10746.
[2023-11-29 00:52:22,202 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10746 states, 10745 states have (on average 1.6614239181014425) internal successors, (17852), 10745 states have internal predecessors, (17852), 0 states have call successors, (0), 0 states 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 00:52:22,215 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10746 states to 10746 states and 17852 transitions.
[2023-11-29 00:52:22,215 INFO  L78                 Accepts]: Start accepts. Automaton has 10746 states and 17852 transitions. Word has length 7047
[2023-11-29 00:52:22,218 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:52:22,218 INFO  L495      AbstractCegarLoop]: Abstraction has 10746 states and 17852 transitions.
[2023-11-29 00:52:22,219 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 907.4285714285714) internal successors, (6352), 7 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states 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 00:52:22,220 INFO  L276                IsEmpty]: Start isEmpty. Operand 10746 states and 17852 transitions.
[2023-11-29 00:52:22,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7049
[2023-11-29 00:52:22,412 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:52:22,413 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 00:52:22,509 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0
[2023-11-29 00:52:22,614 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2023-11-29 00:52:22,614 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:52:22,614 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:52:22,615 INFO  L85        PathProgramCache]: Analyzing trace with hash -271382656, now seen corresponding path program 1 times
[2023-11-29 00:52:22,615 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:52:22,615 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514442583]
[2023-11-29 00:52:22,617 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:22,617 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:52:23,347 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:52:23,348 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217192305]
[2023-11-29 00:52:23,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:23,349 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:52:23,349 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:52:23,350 INFO  L229       MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:52:23,351 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2023-11-29 00:52:31,666 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:52:31,897 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35383 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:52:31,983 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:52:32,334 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked.
[2023-11-29 00:52:32,334 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:52:32,334 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:52:32,334 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514442583]
[2023-11-29 00:52:32,334 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:52:32,334 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217192305]
[2023-11-29 00:52:32,334 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217192305] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:52:32,335 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:52:32,337 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:52:32,337 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446152168]
[2023-11-29 00:52:32,337 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:52:32,340 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:52:32,341 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:52:32,344 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:52:32,344 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:52:32,345 INFO  L87              Difference]: Start difference. First operand 10746 states and 17852 transitions. Second operand  has 7 states, 7 states have (on average 907.8571428571429) internal successors, (6355), 7 states have internal predecessors, (6355), 0 states have call successors, (0), 0 states 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 00:52:32,885 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:52:32,885 INFO  L93              Difference]: Finished difference Result 28997 states and 48156 transitions.
[2023-11-29 00:52:32,885 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:52:32,887 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 907.8571428571429) internal successors, (6355), 7 states have internal predecessors, (6355), 0 states have call successors, (0), 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 7048
[2023-11-29 00:52:32,891 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:52:32,904 INFO  L225             Difference]: With dead ends: 28997
[2023-11-29 00:52:32,904 INFO  L226             Difference]: Without dead ends: 19724
[2023-11-29 00:52:32,911 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7057 GetRequests, 7045 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:52:32,912 INFO  L413           NwaCegarLoop]: 17490 mSDtfsCounter, 43524 mSDsluCounter, 68209 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43524 SdHoareTripleChecker+Valid, 85699 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:52:32,912 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43524 Valid, 85699 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:52:32,930 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19724 states.
[2023-11-29 00:52:33,027 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19724 to 10748.
[2023-11-29 00:52:33,036 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10748 states, 10747 states have (on average 1.661300828138085) internal successors, (17854), 10747 states have internal predecessors, (17854), 0 states have call successors, (0), 0 states 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 00:52:33,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10748 states to 10748 states and 17854 transitions.
[2023-11-29 00:52:33,048 INFO  L78                 Accepts]: Start accepts. Automaton has 10748 states and 17854 transitions. Word has length 7048
[2023-11-29 00:52:33,051 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:52:33,051 INFO  L495      AbstractCegarLoop]: Abstraction has 10748 states and 17854 transitions.
[2023-11-29 00:52:33,052 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 907.8571428571429) internal successors, (6355), 7 states have internal predecessors, (6355), 0 states have call successors, (0), 0 states 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 00:52:33,053 INFO  L276                IsEmpty]: Start isEmpty. Operand 10748 states and 17854 transitions.
[2023-11-29 00:52:33,244 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7050
[2023-11-29 00:52:33,244 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:52:33,245 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]
[2023-11-29 00:52:33,341 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0
[2023-11-29 00:52:33,446 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:52:33,446 INFO  L420      AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:52:33,446 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:52:33,448 INFO  L85        PathProgramCache]: Analyzing trace with hash -23261572, now seen corresponding path program 1 times
[2023-11-29 00:52:33,448 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:52:33,448 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49245588]
[2023-11-29 00:52:33,449 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:33,449 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:52:34,020 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:52:34,020 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910658005]
[2023-11-29 00:52:34,021 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:34,021 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:52:34,021 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:52:34,022 INFO  L229       MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:52:34,023 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2023-11-29 00:52:42,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:52:42,844 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35387 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:52:42,929 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:52:43,295 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked.
[2023-11-29 00:52:43,295 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:52:43,295 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:52:43,295 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49245588]
[2023-11-29 00:52:43,295 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:52:43,295 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910658005]
[2023-11-29 00:52:43,295 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [910658005] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:52:43,295 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:52:43,297 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:52:43,297 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81263767]
[2023-11-29 00:52:43,297 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:52:43,300 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:52:43,300 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:52:43,303 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:52:43,303 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:52:43,305 INFO  L87              Difference]: Start difference. First operand 10748 states and 17854 transitions. Second operand  has 7 states, 7 states have (on average 908.2857142857143) internal successors, (6358), 7 states have internal predecessors, (6358), 0 states have call successors, (0), 0 states 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 00:52:43,838 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:52:43,838 INFO  L93              Difference]: Finished difference Result 29003 states and 48162 transitions.
[2023-11-29 00:52:43,839 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:52:43,840 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 908.2857142857143) internal successors, (6358), 7 states have internal predecessors, (6358), 0 states have call successors, (0), 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 7049
[2023-11-29 00:52:43,845 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:52:43,858 INFO  L225             Difference]: With dead ends: 29003
[2023-11-29 00:52:43,858 INFO  L226             Difference]: Without dead ends: 19725
[2023-11-29 00:52:43,864 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7058 GetRequests, 7046 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:52:43,865 INFO  L413           NwaCegarLoop]: 17485 mSDtfsCounter, 43523 mSDsluCounter, 68194 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43523 SdHoareTripleChecker+Valid, 85679 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:52:43,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43523 Valid, 85679 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:52:43,881 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19725 states.
[2023-11-29 00:52:43,975 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19725 to 10750.
[2023-11-29 00:52:43,984 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10750 states, 10749 states have (on average 1.6611777839799051) internal successors, (17856), 10749 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states 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 00:52:43,997 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10750 states to 10750 states and 17856 transitions.
[2023-11-29 00:52:43,997 INFO  L78                 Accepts]: Start accepts. Automaton has 10750 states and 17856 transitions. Word has length 7049
[2023-11-29 00:52:44,000 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:52:44,000 INFO  L495      AbstractCegarLoop]: Abstraction has 10750 states and 17856 transitions.
[2023-11-29 00:52:44,002 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 908.2857142857143) internal successors, (6358), 7 states have internal predecessors, (6358), 0 states have call successors, (0), 0 states 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 00:52:44,002 INFO  L276                IsEmpty]: Start isEmpty. Operand 10750 states and 17856 transitions.
[2023-11-29 00:52:44,193 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7051
[2023-11-29 00:52:44,193 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:52:44,194 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]
[2023-11-29 00:52:44,285 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0
[2023-11-29 00:52:44,395 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:52:44,395 INFO  L420      AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:52:44,395 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:52:44,396 INFO  L85        PathProgramCache]: Analyzing trace with hash -520665880, now seen corresponding path program 1 times
[2023-11-29 00:52:44,396 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:52:44,396 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832197331]
[2023-11-29 00:52:44,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:44,397 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:52:45,012 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:52:45,012 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366873897]
[2023-11-29 00:52:45,013 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:45,014 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:52:45,014 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:52:45,014 INFO  L229       MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:52:45,015 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2023-11-29 00:52:53,338 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:52:53,561 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35390 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:52:53,642 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:52:53,987 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked.
[2023-11-29 00:52:53,987 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:52:53,987 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:52:53,987 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832197331]
[2023-11-29 00:52:53,987 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:52:53,987 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366873897]
[2023-11-29 00:52:53,987 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366873897] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:52:53,987 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:52:53,990 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:52:53,990 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919492477]
[2023-11-29 00:52:53,990 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:52:53,993 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:52:53,994 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:52:53,996 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:52:53,997 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:52:53,998 INFO  L87              Difference]: Start difference. First operand 10750 states and 17856 transitions. Second operand  has 7 states, 7 states have (on average 908.7142857142857) internal successors, (6361), 7 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states 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 00:52:54,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:52:54,518 INFO  L93              Difference]: Finished difference Result 29009 states and 48168 transitions.
[2023-11-29 00:52:54,518 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:52:54,519 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 908.7142857142857) internal successors, (6361), 7 states have internal predecessors, (6361), 0 states have call successors, (0), 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 7050
[2023-11-29 00:52:54,524 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:52:54,537 INFO  L225             Difference]: With dead ends: 29009
[2023-11-29 00:52:54,537 INFO  L226             Difference]: Without dead ends: 19726
[2023-11-29 00:52:54,544 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7059 GetRequests, 7047 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:52:54,545 INFO  L413           NwaCegarLoop]: 17480 mSDtfsCounter, 43522 mSDsluCounter, 68179 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43522 SdHoareTripleChecker+Valid, 85659 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:52:54,545 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43522 Valid, 85659 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:52:54,563 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19726 states.
[2023-11-29 00:52:54,663 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19726 to 10752.
[2023-11-29 00:52:54,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10752 states, 10751 states have (on average 1.6610547856013393) internal successors, (17858), 10751 states have internal predecessors, (17858), 0 states have call successors, (0), 0 states 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 00:52:54,684 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10752 states to 10752 states and 17858 transitions.
[2023-11-29 00:52:54,684 INFO  L78                 Accepts]: Start accepts. Automaton has 10752 states and 17858 transitions. Word has length 7050
[2023-11-29 00:52:54,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:52:54,688 INFO  L495      AbstractCegarLoop]: Abstraction has 10752 states and 17858 transitions.
[2023-11-29 00:52:54,689 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 908.7142857142857) internal successors, (6361), 7 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states 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 00:52:54,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 10752 states and 17858 transitions.
[2023-11-29 00:52:54,879 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7052
[2023-11-29 00:52:54,879 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:52:54,880 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]
[2023-11-29 00:52:54,980 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0
[2023-11-29 00:52:55,081 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:52:55,081 INFO  L420      AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:52:55,081 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:52:55,082 INFO  L85        PathProgramCache]: Analyzing trace with hash -2122437354, now seen corresponding path program 1 times
[2023-11-29 00:52:55,082 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:52:55,082 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111330759]
[2023-11-29 00:52:55,083 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:55,083 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:52:55,669 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:52:55,669 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609548699]
[2023-11-29 00:52:55,670 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:52:55,670 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:52:55,670 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:52:55,671 INFO  L229       MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:52:55,672 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process
[2023-11-29 00:53:04,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:53:04,274 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35393 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:53:04,368 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:53:04,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked.
[2023-11-29 00:53:04,751 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:53:04,752 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:53:04,752 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111330759]
[2023-11-29 00:53:04,752 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:53:04,752 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609548699]
[2023-11-29 00:53:04,752 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609548699] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:53:04,752 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:53:04,754 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:53:04,754 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983959030]
[2023-11-29 00:53:04,754 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:53:04,757 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:53:04,757 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:53:04,760 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:53:04,760 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:53:04,762 INFO  L87              Difference]: Start difference. First operand 10752 states and 17858 transitions. Second operand  has 7 states, 7 states have (on average 909.1428571428571) internal successors, (6364), 7 states have internal predecessors, (6364), 0 states have call successors, (0), 0 states 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 00:53:05,317 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:53:05,317 INFO  L93              Difference]: Finished difference Result 29015 states and 48174 transitions.
[2023-11-29 00:53:05,317 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:53:05,319 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 909.1428571428571) internal successors, (6364), 7 states have internal predecessors, (6364), 0 states have call successors, (0), 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 7051
[2023-11-29 00:53:05,324 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:53:05,338 INFO  L225             Difference]: With dead ends: 29015
[2023-11-29 00:53:05,338 INFO  L226             Difference]: Without dead ends: 19727
[2023-11-29 00:53:05,345 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7060 GetRequests, 7048 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:53:05,345 INFO  L413           NwaCegarLoop]: 17475 mSDtfsCounter, 43521 mSDsluCounter, 68164 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43521 SdHoareTripleChecker+Valid, 85639 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:53:05,345 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43521 Valid, 85639 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:53:05,363 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19727 states.
[2023-11-29 00:53:05,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19727 to 10754.
[2023-11-29 00:53:05,470 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10754 states, 10753 states have (on average 1.6609318329768437) internal successors, (17860), 10753 states have internal predecessors, (17860), 0 states have call successors, (0), 0 states 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 00:53:05,482 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 17860 transitions.
[2023-11-29 00:53:05,482 INFO  L78                 Accepts]: Start accepts. Automaton has 10754 states and 17860 transitions. Word has length 7051
[2023-11-29 00:53:05,486 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:53:05,486 INFO  L495      AbstractCegarLoop]: Abstraction has 10754 states and 17860 transitions.
[2023-11-29 00:53:05,488 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 909.1428571428571) internal successors, (6364), 7 states have internal predecessors, (6364), 0 states have call successors, (0), 0 states 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 00:53:05,488 INFO  L276                IsEmpty]: Start isEmpty. Operand 10754 states and 17860 transitions.
[2023-11-29 00:53:05,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7053
[2023-11-29 00:53:05,801 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:53:05,802 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 00:53:05,899 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0
[2023-11-29 00:53:06,003 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63
[2023-11-29 00:53:06,003 INFO  L420      AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:53:06,003 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:53:06,004 INFO  L85        PathProgramCache]: Analyzing trace with hash -2133316786, now seen corresponding path program 1 times
[2023-11-29 00:53:06,004 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:53:06,004 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782456341]
[2023-11-29 00:53:06,005 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:06,005 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:53:06,563 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:53:06,563 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228581492]
[2023-11-29 00:53:06,564 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:06,564 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:53:06,565 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:53:06,565 INFO  L229       MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:53:06,566 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process
[2023-11-29 00:53:14,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:53:15,171 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35396 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:53:15,258 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:53:15,594 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked.
[2023-11-29 00:53:15,594 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:53:15,594 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:53:15,594 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782456341]
[2023-11-29 00:53:15,594 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:53:15,594 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228581492]
[2023-11-29 00:53:15,594 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228581492] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:53:15,594 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:53:15,596 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:53:15,596 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194464247]
[2023-11-29 00:53:15,596 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:53:15,599 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:53:15,599 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:53:15,602 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:53:15,602 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:53:15,603 INFO  L87              Difference]: Start difference. First operand 10754 states and 17860 transitions. Second operand  has 7 states, 7 states have (on average 909.5714285714286) internal successors, (6367), 7 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states 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 00:53:16,148 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:53:16,148 INFO  L93              Difference]: Finished difference Result 29021 states and 48180 transitions.
[2023-11-29 00:53:16,149 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:53:16,150 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 909.5714285714286) internal successors, (6367), 7 states have internal predecessors, (6367), 0 states have call successors, (0), 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 7052
[2023-11-29 00:53:16,155 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:53:16,169 INFO  L225             Difference]: With dead ends: 29021
[2023-11-29 00:53:16,169 INFO  L226             Difference]: Without dead ends: 19728
[2023-11-29 00:53:16,176 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7061 GetRequests, 7049 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:53:16,177 INFO  L413           NwaCegarLoop]: 17470 mSDtfsCounter, 43520 mSDsluCounter, 68149 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43520 SdHoareTripleChecker+Valid, 85619 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:53:16,177 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43520 Valid, 85619 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:53:16,194 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19728 states.
[2023-11-29 00:53:16,298 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19728 to 10756.
[2023-11-29 00:53:16,308 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10756 states, 10755 states have (on average 1.6608089260808927) internal successors, (17862), 10755 states have internal predecessors, (17862), 0 states have call successors, (0), 0 states 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 00:53:16,319 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10756 states to 10756 states and 17862 transitions.
[2023-11-29 00:53:16,319 INFO  L78                 Accepts]: Start accepts. Automaton has 10756 states and 17862 transitions. Word has length 7052
[2023-11-29 00:53:16,322 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:53:16,322 INFO  L495      AbstractCegarLoop]: Abstraction has 10756 states and 17862 transitions.
[2023-11-29 00:53:16,324 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 909.5714285714286) internal successors, (6367), 7 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states 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 00:53:16,324 INFO  L276                IsEmpty]: Start isEmpty. Operand 10756 states and 17862 transitions.
[2023-11-29 00:53:16,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7054
[2023-11-29 00:53:16,517 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:53:16,518 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:53:16,610 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0
[2023-11-29 00:53:16,718 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64
[2023-11-29 00:53:16,719 INFO  L420      AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:53:16,719 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:53:16,720 INFO  L85        PathProgramCache]: Analyzing trace with hash 1180155826, now seen corresponding path program 1 times
[2023-11-29 00:53:16,720 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:53:16,720 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136778926]
[2023-11-29 00:53:16,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:16,721 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:53:17,284 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:53:17,285 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348543895]
[2023-11-29 00:53:17,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:17,286 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:53:17,286 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:53:17,287 INFO  L229       MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:53:17,288 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process
[2023-11-29 00:53:25,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:53:25,940 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35400 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:53:26,028 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:53:26,400 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked.
[2023-11-29 00:53:26,400 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:53:26,400 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:53:26,400 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136778926]
[2023-11-29 00:53:26,400 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:53:26,400 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348543895]
[2023-11-29 00:53:26,400 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [348543895] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:53:26,400 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:53:26,402 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:53:26,402 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582171178]
[2023-11-29 00:53:26,402 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:53:26,405 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:53:26,405 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:53:26,408 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:53:26,408 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:53:26,410 INFO  L87              Difference]: Start difference. First operand 10756 states and 17862 transitions. Second operand  has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states 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 00:53:26,941 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:53:26,941 INFO  L93              Difference]: Finished difference Result 29027 states and 48186 transitions.
[2023-11-29 00:53:26,942 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:53:26,943 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 0 states have call successors, (0), 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 7053
[2023-11-29 00:53:26,948 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:53:26,960 INFO  L225             Difference]: With dead ends: 29027
[2023-11-29 00:53:26,961 INFO  L226             Difference]: Without dead ends: 19729
[2023-11-29 00:53:26,967 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7062 GetRequests, 7050 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:53:26,968 INFO  L413           NwaCegarLoop]: 17465 mSDtfsCounter, 43519 mSDsluCounter, 68134 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43519 SdHoareTripleChecker+Valid, 85599 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:53:26,968 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43519 Valid, 85599 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:53:26,984 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19729 states.
[2023-11-29 00:53:27,081 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19729 to 10758.
[2023-11-29 00:53:27,090 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10758 states, 10757 states have (on average 1.66068606488798) internal successors, (17864), 10757 states have internal predecessors, (17864), 0 states have call successors, (0), 0 states 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 00:53:27,102 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 17864 transitions.
[2023-11-29 00:53:27,102 INFO  L78                 Accepts]: Start accepts. Automaton has 10758 states and 17864 transitions. Word has length 7053
[2023-11-29 00:53:27,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:53:27,105 INFO  L495      AbstractCegarLoop]: Abstraction has 10758 states and 17864 transitions.
[2023-11-29 00:53:27,107 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states 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 00:53:27,107 INFO  L276                IsEmpty]: Start isEmpty. Operand 10758 states and 17864 transitions.
[2023-11-29 00:53:27,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7055
[2023-11-29 00:53:27,458 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:53:27,459 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 00:53:27,548 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0
[2023-11-29 00:53:27,659 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:53:27,660 INFO  L420      AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:53:27,660 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:53:27,661 INFO  L85        PathProgramCache]: Analyzing trace with hash 1279818166, now seen corresponding path program 1 times
[2023-11-29 00:53:27,661 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:53:27,661 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317744538]
[2023-11-29 00:53:27,663 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:27,663 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:53:28,216 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:53:28,216 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892912711]
[2023-11-29 00:53:28,217 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:28,217 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:53:28,218 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:53:28,218 INFO  L229       MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:53:28,219 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process
[2023-11-29 00:53:36,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:53:36,877 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35403 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:53:36,962 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:53:37,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked.
[2023-11-29 00:53:37,353 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:53:37,353 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:53:37,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317744538]
[2023-11-29 00:53:37,354 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:53:37,354 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892912711]
[2023-11-29 00:53:37,354 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892912711] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:53:37,354 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:53:37,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:53:37,356 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841404651]
[2023-11-29 00:53:37,356 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:53:37,360 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:53:37,360 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:53:37,364 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:53:37,364 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:53:37,366 INFO  L87              Difference]: Start difference. First operand 10758 states and 17864 transitions. Second operand  has 7 states, 7 states have (on average 910.4285714285714) internal successors, (6373), 7 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states 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 00:53:37,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:53:37,895 INFO  L93              Difference]: Finished difference Result 29033 states and 48192 transitions.
[2023-11-29 00:53:37,895 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:53:37,897 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 910.4285714285714) internal successors, (6373), 7 states have internal predecessors, (6373), 0 states have call successors, (0), 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 7054
[2023-11-29 00:53:37,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:53:37,915 INFO  L225             Difference]: With dead ends: 29033
[2023-11-29 00:53:37,915 INFO  L226             Difference]: Without dead ends: 19730
[2023-11-29 00:53:37,922 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7063 GetRequests, 7051 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:53:37,922 INFO  L413           NwaCegarLoop]: 17460 mSDtfsCounter, 43518 mSDsluCounter, 68119 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43518 SdHoareTripleChecker+Valid, 85579 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:53:37,922 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43518 Valid, 85579 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:53:37,939 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19730 states.
[2023-11-29 00:53:38,036 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19730 to 10760.
[2023-11-29 00:53:38,045 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10760 states, 10759 states have (on average 1.6605632493726183) internal successors, (17866), 10759 states have internal predecessors, (17866), 0 states have call successors, (0), 0 states 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 00:53:38,056 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10760 states to 10760 states and 17866 transitions.
[2023-11-29 00:53:38,056 INFO  L78                 Accepts]: Start accepts. Automaton has 10760 states and 17866 transitions. Word has length 7054
[2023-11-29 00:53:38,059 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:53:38,059 INFO  L495      AbstractCegarLoop]: Abstraction has 10760 states and 17866 transitions.
[2023-11-29 00:53:38,060 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 910.4285714285714) internal successors, (6373), 7 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states 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 00:53:38,061 INFO  L276                IsEmpty]: Start isEmpty. Operand 10760 states and 17866 transitions.
[2023-11-29 00:53:38,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7056
[2023-11-29 00:53:38,250 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:53:38,252 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:53:38,348 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0
[2023-11-29 00:53:38,452 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:53:38,452 INFO  L420      AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:53:38,452 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:53:38,453 INFO  L85        PathProgramCache]: Analyzing trace with hash 1399224908, now seen corresponding path program 1 times
[2023-11-29 00:53:38,453 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:53:38,453 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911329111]
[2023-11-29 00:53:38,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:38,454 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:53:38,997 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:53:38,998 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095974922]
[2023-11-29 00:53:38,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:38,999 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:53:38,999 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:53:39,000 INFO  L229       MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:53:39,000 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process
[2023-11-29 00:53:47,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:53:47,848 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35406 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:53:47,936 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:53:48,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked.
[2023-11-29 00:53:48,303 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:53:48,303 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:53:48,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911329111]
[2023-11-29 00:53:48,303 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:53:48,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095974922]
[2023-11-29 00:53:48,303 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095974922] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:53:48,303 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:53:48,306 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:53:48,306 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618160967]
[2023-11-29 00:53:48,306 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:53:48,309 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:53:48,309 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:53:48,312 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:53:48,312 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:53:48,314 INFO  L87              Difference]: Start difference. First operand 10760 states and 17866 transitions. Second operand  has 7 states, 7 states have (on average 910.8571428571429) internal successors, (6376), 7 states have internal predecessors, (6376), 0 states have call successors, (0), 0 states 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 00:53:48,857 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:53:48,857 INFO  L93              Difference]: Finished difference Result 29039 states and 48198 transitions.
[2023-11-29 00:53:48,857 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:53:48,859 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 910.8571428571429) internal successors, (6376), 7 states have internal predecessors, (6376), 0 states have call successors, (0), 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 7055
[2023-11-29 00:53:48,863 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:53:48,877 INFO  L225             Difference]: With dead ends: 29039
[2023-11-29 00:53:48,877 INFO  L226             Difference]: Without dead ends: 19731
[2023-11-29 00:53:48,885 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7064 GetRequests, 7052 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:53:48,885 INFO  L413           NwaCegarLoop]: 17455 mSDtfsCounter, 43517 mSDsluCounter, 68104 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43517 SdHoareTripleChecker+Valid, 85559 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:53:48,885 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43517 Valid, 85559 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:53:48,904 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19731 states.
[2023-11-29 00:53:49,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19731 to 10762.
[2023-11-29 00:53:49,021 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10762 states, 10761 states have (on average 1.6604404795093393) internal successors, (17868), 10761 states have internal predecessors, (17868), 0 states have call successors, (0), 0 states 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 00:53:49,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10762 states to 10762 states and 17868 transitions.
[2023-11-29 00:53:49,034 INFO  L78                 Accepts]: Start accepts. Automaton has 10762 states and 17868 transitions. Word has length 7055
[2023-11-29 00:53:49,038 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:53:49,038 INFO  L495      AbstractCegarLoop]: Abstraction has 10762 states and 17868 transitions.
[2023-11-29 00:53:49,039 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 910.8571428571429) internal successors, (6376), 7 states have internal predecessors, (6376), 0 states have call successors, (0), 0 states 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 00:53:49,039 INFO  L276                IsEmpty]: Start isEmpty. Operand 10762 states and 17868 transitions.
[2023-11-29 00:53:49,388 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7057
[2023-11-29 00:53:49,388 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:53:49,390 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 00:53:49,501 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0
[2023-11-29 00:53:49,591 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67
[2023-11-29 00:53:49,591 INFO  L420      AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:53:49,591 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:53:49,593 INFO  L85        PathProgramCache]: Analyzing trace with hash -1590516708, now seen corresponding path program 1 times
[2023-11-29 00:53:49,593 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:53:49,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402820644]
[2023-11-29 00:53:49,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:49,595 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:53:50,192 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:53:50,192 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331721188]
[2023-11-29 00:53:50,193 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:53:50,193 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:53:50,193 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:53:50,194 INFO  L229       MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:53:50,195 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process
[2023-11-29 00:53:58,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:53:59,002 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35409 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:53:59,088 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:53:59,432 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked.
[2023-11-29 00:53:59,432 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:53:59,432 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:53:59,432 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402820644]
[2023-11-29 00:53:59,432 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:53:59,432 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331721188]
[2023-11-29 00:53:59,433 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331721188] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:53:59,433 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:53:59,434 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:53:59,434 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093574573]
[2023-11-29 00:53:59,434 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:53:59,437 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:53:59,437 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:53:59,440 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:53:59,440 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:53:59,441 INFO  L87              Difference]: Start difference. First operand 10762 states and 17868 transitions. Second operand  has 7 states, 7 states have (on average 911.2857142857143) internal successors, (6379), 7 states have internal predecessors, (6379), 0 states have call successors, (0), 0 states 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 00:53:59,962 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:53:59,962 INFO  L93              Difference]: Finished difference Result 29045 states and 48204 transitions.
[2023-11-29 00:53:59,963 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:53:59,964 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 911.2857142857143) internal successors, (6379), 7 states have internal predecessors, (6379), 0 states have call successors, (0), 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 7056
[2023-11-29 00:53:59,969 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:53:59,982 INFO  L225             Difference]: With dead ends: 29045
[2023-11-29 00:53:59,982 INFO  L226             Difference]: Without dead ends: 19732
[2023-11-29 00:53:59,989 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7065 GetRequests, 7053 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:53:59,989 INFO  L413           NwaCegarLoop]: 17450 mSDtfsCounter, 43516 mSDsluCounter, 68089 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43516 SdHoareTripleChecker+Valid, 85539 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:53:59,989 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43516 Valid, 85539 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:54:00,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19732 states.
[2023-11-29 00:54:00,101 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19732 to 10764.
[2023-11-29 00:54:00,109 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10764 states, 10763 states have (on average 1.6603177552726935) internal successors, (17870), 10763 states have internal predecessors, (17870), 0 states have call successors, (0), 0 states 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 00:54:00,121 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10764 states to 10764 states and 17870 transitions.
[2023-11-29 00:54:00,121 INFO  L78                 Accepts]: Start accepts. Automaton has 10764 states and 17870 transitions. Word has length 7056
[2023-11-29 00:54:00,124 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:54:00,124 INFO  L495      AbstractCegarLoop]: Abstraction has 10764 states and 17870 transitions.
[2023-11-29 00:54:00,125 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 911.2857142857143) internal successors, (6379), 7 states have internal predecessors, (6379), 0 states have call successors, (0), 0 states 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 00:54:00,125 INFO  L276                IsEmpty]: Start isEmpty. Operand 10764 states and 17870 transitions.
[2023-11-29 00:54:00,315 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7058
[2023-11-29 00:54:00,315 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:54:00,316 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:54:00,416 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0
[2023-11-29 00:54:00,517 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2023-11-29 00:54:00,517 INFO  L420      AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:54:00,517 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:54:00,518 INFO  L85        PathProgramCache]: Analyzing trace with hash -2029718040, now seen corresponding path program 1 times
[2023-11-29 00:54:00,518 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:54:00,518 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231488567]
[2023-11-29 00:54:00,519 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:54:00,519 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:54:01,107 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:54:01,108 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899169762]
[2023-11-29 00:54:01,109 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:54:01,109 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:54:01,109 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:54:01,110 INFO  L229       MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:54:01,111 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process
[2023-11-29 00:54:09,791 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:54:10,015 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35413 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:54:10,129 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:54:10,489 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked.
[2023-11-29 00:54:10,489 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:54:10,489 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:54:10,489 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231488567]
[2023-11-29 00:54:10,489 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:54:10,489 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899169762]
[2023-11-29 00:54:10,489 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899169762] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:54:10,490 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:54:10,491 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:54:10,491 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221991468]
[2023-11-29 00:54:10,491 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:54:10,495 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:54:10,495 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:54:10,498 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:54:10,498 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:54:10,499 INFO  L87              Difference]: Start difference. First operand 10764 states and 17870 transitions. Second operand  has 7 states, 7 states have (on average 911.7142857142857) internal successors, (6382), 7 states have internal predecessors, (6382), 0 states have call successors, (0), 0 states 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 00:54:11,019 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:54:11,019 INFO  L93              Difference]: Finished difference Result 29051 states and 48210 transitions.
[2023-11-29 00:54:11,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:54:11,021 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 911.7142857142857) internal successors, (6382), 7 states have internal predecessors, (6382), 0 states have call successors, (0), 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 7057
[2023-11-29 00:54:11,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:54:11,038 INFO  L225             Difference]: With dead ends: 29051
[2023-11-29 00:54:11,038 INFO  L226             Difference]: Without dead ends: 19733
[2023-11-29 00:54:11,045 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7066 GetRequests, 7054 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:54:11,045 INFO  L413           NwaCegarLoop]: 17445 mSDtfsCounter, 43515 mSDsluCounter, 68074 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43515 SdHoareTripleChecker+Valid, 85519 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:54:11,046 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43515 Valid, 85519 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:54:11,062 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19733 states.
[2023-11-29 00:54:11,349 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19733 to 10766.
[2023-11-29 00:54:11,357 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10766 states, 10765 states have (on average 1.6601950766372504) internal successors, (17872), 10765 states have internal predecessors, (17872), 0 states have call successors, (0), 0 states 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 00:54:11,368 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10766 states to 10766 states and 17872 transitions.
[2023-11-29 00:54:11,368 INFO  L78                 Accepts]: Start accepts. Automaton has 10766 states and 17872 transitions. Word has length 7057
[2023-11-29 00:54:11,371 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:54:11,371 INFO  L495      AbstractCegarLoop]: Abstraction has 10766 states and 17872 transitions.
[2023-11-29 00:54:11,372 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 911.7142857142857) internal successors, (6382), 7 states have internal predecessors, (6382), 0 states have call successors, (0), 0 states 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 00:54:11,373 INFO  L276                IsEmpty]: Start isEmpty. Operand 10766 states and 17872 transitions.
[2023-11-29 00:54:11,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7059
[2023-11-29 00:54:11,563 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:54:11,564 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]
[2023-11-29 00:54:11,662 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0
[2023-11-29 00:54:11,765 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:54:11,765 INFO  L420      AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:54:11,765 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:54:11,767 INFO  L85        PathProgramCache]: Analyzing trace with hash 304022404, now seen corresponding path program 1 times
[2023-11-29 00:54:11,767 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:54:11,767 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567682822]
[2023-11-29 00:54:11,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:54:11,768 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:54:12,343 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:54:12,343 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927155793]
[2023-11-29 00:54:12,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:54:12,345 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:54:12,345 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:54:12,345 INFO  L229       MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:54:12,346 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process
[2023-11-29 00:54:20,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:54:20,979 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35416 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:54:21,063 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:54:21,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked.
[2023-11-29 00:54:21,655 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:54:21,655 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:54:21,655 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567682822]
[2023-11-29 00:54:21,656 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:54:21,656 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927155793]
[2023-11-29 00:54:21,656 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [927155793] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:54:21,656 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:54:21,658 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:54:21,658 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490589690]
[2023-11-29 00:54:21,658 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:54:21,661 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:54:21,661 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:54:21,665 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:54:21,665 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:54:21,666 INFO  L87              Difference]: Start difference. First operand 10766 states and 17872 transitions. Second operand  has 7 states, 7 states have (on average 912.1428571428571) internal successors, (6385), 7 states have internal predecessors, (6385), 0 states have call successors, (0), 0 states 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 00:54:22,243 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:54:22,243 INFO  L93              Difference]: Finished difference Result 29057 states and 48216 transitions.
[2023-11-29 00:54:22,243 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:54:22,245 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 912.1428571428571) internal successors, (6385), 7 states have internal predecessors, (6385), 0 states have call successors, (0), 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 7058
[2023-11-29 00:54:22,249 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:54:22,263 INFO  L225             Difference]: With dead ends: 29057
[2023-11-29 00:54:22,263 INFO  L226             Difference]: Without dead ends: 19734
[2023-11-29 00:54:22,271 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7067 GetRequests, 7055 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:54:22,271 INFO  L413           NwaCegarLoop]: 17440 mSDtfsCounter, 43514 mSDsluCounter, 68059 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43514 SdHoareTripleChecker+Valid, 85499 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:54:22,271 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43514 Valid, 85499 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:54:22,289 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19734 states.
[2023-11-29 00:54:22,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19734 to 10768.
[2023-11-29 00:54:22,402 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10768 states, 10767 states have (on average 1.6600724435775982) internal successors, (17874), 10767 states have internal predecessors, (17874), 0 states have call successors, (0), 0 states 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 00:54:22,414 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10768 states to 10768 states and 17874 transitions.
[2023-11-29 00:54:22,414 INFO  L78                 Accepts]: Start accepts. Automaton has 10768 states and 17874 transitions. Word has length 7058
[2023-11-29 00:54:22,417 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:54:22,417 INFO  L495      AbstractCegarLoop]: Abstraction has 10768 states and 17874 transitions.
[2023-11-29 00:54:22,419 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 912.1428571428571) internal successors, (6385), 7 states have internal predecessors, (6385), 0 states have call successors, (0), 0 states 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 00:54:22,419 INFO  L276                IsEmpty]: Start isEmpty. Operand 10768 states and 17874 transitions.
[2023-11-29 00:54:22,612 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7060
[2023-11-29 00:54:22,612 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:54:22,614 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]
[2023-11-29 00:54:22,715 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0
[2023-11-29 00:54:22,814 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:54:22,814 INFO  L420      AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:54:22,815 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:54:22,815 INFO  L85        PathProgramCache]: Analyzing trace with hash 690343042, now seen corresponding path program 1 times
[2023-11-29 00:54:22,815 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:54:22,816 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957607975]
[2023-11-29 00:54:22,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:54:22,816 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:54:23,514 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:54:23,514 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351996282]
[2023-11-29 00:54:23,515 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:54:23,515 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:54:23,515 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:54:23,516 INFO  L229       MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:54:23,517 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process
[2023-11-29 00:54:31,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:54:32,142 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35419 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:54:32,229 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:54:32,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked.
[2023-11-29 00:54:32,589 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:54:32,590 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:54:32,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957607975]
[2023-11-29 00:54:32,590 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:54:32,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351996282]
[2023-11-29 00:54:32,590 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351996282] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:54:32,590 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:54:32,592 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:54:32,593 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479715231]
[2023-11-29 00:54:32,593 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:54:32,596 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:54:32,596 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:54:32,599 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:54:32,599 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:54:32,601 INFO  L87              Difference]: Start difference. First operand 10768 states and 17874 transitions. Second operand  has 7 states, 7 states have (on average 912.5714285714286) internal successors, (6388), 7 states have internal predecessors, (6388), 0 states have call successors, (0), 0 states 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 00:54:33,139 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:54:33,139 INFO  L93              Difference]: Finished difference Result 29063 states and 48222 transitions.
[2023-11-29 00:54:33,140 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 00:54:33,141 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 912.5714285714286) internal successors, (6388), 7 states have internal predecessors, (6388), 0 states have call successors, (0), 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 7059
[2023-11-29 00:54:33,146 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:54:33,161 INFO  L225             Difference]: With dead ends: 29063
[2023-11-29 00:54:33,161 INFO  L226             Difference]: Without dead ends: 19735
[2023-11-29 00:54:33,167 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7068 GetRequests, 7056 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:54:33,168 INFO  L413           NwaCegarLoop]: 17435 mSDtfsCounter, 43513 mSDsluCounter, 68044 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43513 SdHoareTripleChecker+Valid, 85479 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:54:33,168 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43513 Valid, 85479 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:54:33,184 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19735 states.
[2023-11-29 00:54:33,281 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19735 to 10770.
[2023-11-29 00:54:33,290 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10770 states, 10769 states have (on average 1.6599498560683443) internal successors, (17876), 10769 states have internal predecessors, (17876), 0 states have call successors, (0), 0 states 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 00:54:33,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10770 states to 10770 states and 17876 transitions.
[2023-11-29 00:54:33,301 INFO  L78                 Accepts]: Start accepts. Automaton has 10770 states and 17876 transitions. Word has length 7059
[2023-11-29 00:54:33,304 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:54:33,304 INFO  L495      AbstractCegarLoop]: Abstraction has 10770 states and 17876 transitions.
[2023-11-29 00:54:33,305 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 912.5714285714286) internal successors, (6388), 7 states have internal predecessors, (6388), 0 states have call successors, (0), 0 states 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 00:54:33,306 INFO  L276                IsEmpty]: Start isEmpty. Operand 10770 states and 17876 transitions.
[2023-11-29 00:54:33,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7061
[2023-11-29 00:54:33,497 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:54:33,498 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 00:54:33,597 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0
[2023-11-29 00:54:33,698 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:54:33,699 INFO  L420      AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:54:33,699 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:54:33,700 INFO  L85        PathProgramCache]: Analyzing trace with hash 1672344042, now seen corresponding path program 1 times
[2023-11-29 00:54:33,700 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:54:33,700 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304162184]
[2023-11-29 00:54:33,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:54:33,700 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:54:34,270 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:54:34,270 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292541539]
[2023-11-29 00:54:34,271 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:54:34,271 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:54:34,271 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:54:34,272 INFO  L229       MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:54:34,273 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc5891-3d77-4607-8b2b-1390b856ae8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process