./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop5-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/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_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop5-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/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_88adc93b-3665-4253-b97a-00d5a8a2e296/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 578eabb58d6dad579460167befb478191b64007f59059bd749f8b8e18e062098
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 05:21:50,151 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 05:21:50,215 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 05:21:50,219 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 05:21:50,219 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 05:21:50,243 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 05:21:50,243 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 05:21:50,244 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 05:21:50,245 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 05:21:50,245 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 05:21:50,246 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 05:21:50,246 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 05:21:50,247 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 05:21:50,247 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 05:21:50,248 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 05:21:50,248 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 05:21:50,249 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 05:21:50,249 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 05:21:50,250 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 05:21:50,250 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 05:21:50,251 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 05:21:50,252 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 05:21:50,252 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 05:21:50,252 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 05:21:50,253 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 05:21:50,253 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 05:21:50,254 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 05:21:50,254 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 05:21:50,254 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:21:50,255 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 05:21:50,255 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 05:21:50,256 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 05:21:50,256 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 05:21:50,256 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 05:21:50,257 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 05:21:50,257 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 05:21:50,257 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 05:21:50,257 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 05:21:50,258 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 05:21:50,258 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_88adc93b-3665-4253-b97a-00d5a8a2e296/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_88adc93b-3665-4253-b97a-00d5a8a2e296/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 -> 578eabb58d6dad579460167befb478191b64007f59059bd749f8b8e18e062098
[2023-11-29 05:21:50,468 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 05:21:50,491 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 05:21:50,494 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 05:21:50,495 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 05:21:50,495 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 05:21:50,496 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop5-back-serstep.c
[2023-11-29 05:21:53,287 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 05:21:53,877 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 05:21:53,877 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop5-back-serstep.c
[2023-11-29 05:21:53,955 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/data/e9a0ae074/802966e3ef0341b19db0c0625f18c1c1/FLAG3074fa022
[2023-11-29 05:21:53,971 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/data/e9a0ae074/802966e3ef0341b19db0c0625f18c1c1
[2023-11-29 05:21:53,973 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 05:21:53,975 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 05:21:53,976 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 05:21:53,976 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 05:21:53,981 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 05:21:53,982 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:21:53" (1/1) ...
[2023-11-29 05:21:53,983 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bef8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:53, skipping insertion in model container
[2023-11-29 05:21:53,983 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:21:53" (1/1) ...
[2023-11-29 05:21:54,257 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 05:21:54,591 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_88adc93b-3665-4253-b97a-00d5a8a2e296/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop5-back-serstep.c[1180,1193]
[2023-11-29 05:21:55,900 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:21:55,908 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 05:21:55,918 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_88adc93b-3665-4253-b97a-00d5a8a2e296/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop5-back-serstep.c[1180,1193]
[2023-11-29 05:21:56,818 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:21:56,831 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 05:21:56,831 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56 WrapperNode
[2023-11-29 05:21:56,831 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 05:21:56,832 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 05:21:56,832 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 05:21:56,832 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 05:21:56,839 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:21:57,140 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:00,140 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56262
[2023-11-29 05:22:00,140 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 05:22:00,141 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 05:22:00,141 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 05:22:00,141 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 05:22:00,149 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:00,150 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:01,028 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:01,586 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 05:22:01,586 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:01,587 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:02,468 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:02,615 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:02,776 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:02,903 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:03,554 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 05:22:03,555 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 05:22:03,555 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 05:22:03,555 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 05:22:03,556 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (1/1) ...
[2023-11-29 05:22:03,561 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:22:03,570 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:22:03,581 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 05:22:03,583 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 05:22:03,610 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 05:22:03,610 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 05:22:03,610 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 05:22:03,611 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 05:22:06,095 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 05:22:06,096 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 05:22:29,429 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 05:22:30,030 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 05:22:30,031 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 05:22:30,035 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:22:30 BoogieIcfgContainer
[2023-11-29 05:22:30,035 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 05:22:30,038 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 05:22:30,038 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 05:22:30,041 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 05:22:30,041 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:21:53" (1/3) ...
[2023-11-29 05:22:30,041 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1d9401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:22:30, skipping insertion in model container
[2023-11-29 05:22:30,042 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:21:56" (2/3) ...
[2023-11-29 05:22:30,042 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1d9401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:22:30, skipping insertion in model container
[2023-11-29 05:22:30,042 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:22:30" (3/3) ...
[2023-11-29 05:22:30,043 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.3.prop5-back-serstep.c
[2023-11-29 05:22:30,056 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 05:22:30,056 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 05:22:30,221 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 05:22:30,226 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;@104094e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 05:22:30,227 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 05:22:30,267 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12142 states, 12140 states have (on average 1.6668863261943987) internal successors, (20236), 12141 states have internal predecessors, (20236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:30,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1267
[2023-11-29 05:22:30,357 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:22:30,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:30,360 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:22:30,365 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:22:30,366 INFO  L85        PathProgramCache]: Analyzing trace with hash -471527210, now seen corresponding path program 1 times
[2023-11-29 05:22:30,376 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:22:30,376 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252476986]
[2023-11-29 05:22:30,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:22:30,377 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:22:31,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:22:37,023 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 05:22:37,024 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:22:37,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252476986]
[2023-11-29 05:22:37,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252476986] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:22:37,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:22:37,025 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:22:37,027 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158285840]
[2023-11-29 05:22:37,027 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:22:37,034 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:22:37,034 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:22:37,065 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:22:37,066 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:22:37,095 INFO  L87              Difference]: Start difference. First operand  has 12142 states, 12140 states have (on average 1.6668863261943987) internal successors, (20236), 12141 states have internal predecessors, (20236), 0 states have call successors, (0), 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 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:37,754 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:22:37,754 INFO  L93              Difference]: Finished difference Result 23755 states and 39593 transitions.
[2023-11-29 05:22:37,756 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:22:37,758 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 0 states have call successors, (0), 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 1266
[2023-11-29 05:22:37,766 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:22:37,844 INFO  L225             Difference]: With dead ends: 23755
[2023-11-29 05:22:37,845 INFO  L226             Difference]: Without dead ends: 12142
[2023-11-29 05:22:37,864 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 05:22:37,868 INFO  L413           NwaCegarLoop]: 20229 mSDtfsCounter, 1 mSDsluCounter, 40453 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60682 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:22:37,869 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60682 Invalid, 13 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:22:37,915 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12142 states.
[2023-11-29 05:22:38,175 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12142 to 12142.
[2023-11-29 05:22:38,203 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12142 states, 12141 states have (on average 1.6665843011284078) internal successors, (20234), 12141 states have internal predecessors, (20234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:38,252 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 20234 transitions.
[2023-11-29 05:22:38,253 INFO  L78                 Accepts]: Start accepts. Automaton has 12142 states and 20234 transitions. Word has length 1266
[2023-11-29 05:22:38,256 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:22:38,256 INFO  L495      AbstractCegarLoop]: Abstraction has 12142 states and 20234 transitions.
[2023-11-29 05:22:38,257 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:38,257 INFO  L276                IsEmpty]: Start isEmpty. Operand 12142 states and 20234 transitions.
[2023-11-29 05:22:38,308 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1268
[2023-11-29 05:22:38,308 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:22:38,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:38,310 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 05:22:38,310 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:22:38,310 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:22:38,312 INFO  L85        PathProgramCache]: Analyzing trace with hash -1730709102, now seen corresponding path program 1 times
[2023-11-29 05:22:38,312 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:22:38,312 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868774851]
[2023-11-29 05:22:38,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:22:38,313 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:22:38,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:22:40,870 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 05:22:40,870 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:22:40,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868774851]
[2023-11-29 05:22:40,871 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868774851] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:22:40,871 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:22:40,871 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:22:40,872 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219836007]
[2023-11-29 05:22:40,872 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:22:40,875 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:22:40,876 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:22:40,878 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:22:40,878 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:22:40,879 INFO  L87              Difference]: Start difference. First operand 12142 states and 20234 transitions. Second operand  has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:41,490 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:22:41,490 INFO  L93              Difference]: Finished difference Result 23758 states and 39591 transitions.
[2023-11-29 05:22:41,491 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:22:41,492 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 0 states have call successors, (0), 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 1267
[2023-11-29 05:22:41,495 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:22:41,561 INFO  L225             Difference]: With dead ends: 23758
[2023-11-29 05:22:41,561 INFO  L226             Difference]: Without dead ends: 12145
[2023-11-29 05:22:41,573 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 05:22:41,574 INFO  L413           NwaCegarLoop]: 20229 mSDtfsCounter, 1 mSDsluCounter, 40451 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60680 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:22:41,575 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60680 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:22:41,598 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12145 states.
[2023-11-29 05:22:41,794 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12145 to 12144.
[2023-11-29 05:22:41,813 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12144 states, 12143 states have (on average 1.6664745120645639) internal successors, (20236), 12143 states have internal predecessors, (20236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:41,848 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12144 states to 12144 states and 20236 transitions.
[2023-11-29 05:22:41,848 INFO  L78                 Accepts]: Start accepts. Automaton has 12144 states and 20236 transitions. Word has length 1267
[2023-11-29 05:22:41,850 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:22:41,850 INFO  L495      AbstractCegarLoop]: Abstraction has 12144 states and 20236 transitions.
[2023-11-29 05:22:41,851 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:41,851 INFO  L276                IsEmpty]: Start isEmpty. Operand 12144 states and 20236 transitions.
[2023-11-29 05:22:41,867 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1269
[2023-11-29 05:22:41,868 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:22:41,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:41,869 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 05:22:41,869 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:22:41,870 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:22:41,871 INFO  L85        PathProgramCache]: Analyzing trace with hash -547792142, now seen corresponding path program 1 times
[2023-11-29 05:22:41,871 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:22:41,871 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695005899]
[2023-11-29 05:22:41,871 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:22:41,872 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:22:42,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:22:44,239 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 05:22:44,239 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:22:44,240 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695005899]
[2023-11-29 05:22:44,240 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695005899] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:22:44,240 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:22:44,240 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:22:44,241 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073770613]
[2023-11-29 05:22:44,241 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:22:44,243 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:22:44,243 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:22:44,245 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:22:44,245 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:22:44,246 INFO  L87              Difference]: Start difference. First operand 12144 states and 20236 transitions. Second operand  has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:44,689 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:22:44,689 INFO  L93              Difference]: Finished difference Result 35368 states and 58937 transitions.
[2023-11-29 05:22:44,689 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:22:44,690 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 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 1268
[2023-11-29 05:22:44,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:22:44,730 INFO  L225             Difference]: With dead ends: 35368
[2023-11-29 05:22:44,730 INFO  L226             Difference]: Without dead ends: 23753
[2023-11-29 05:22:44,742 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 05:22:44,743 INFO  L413           NwaCegarLoop]: 22494 mSDtfsCounter, 19342 mSDsluCounter, 42714 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19342 SdHoareTripleChecker+Valid, 65208 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:22:44,744 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19342 Valid, 65208 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:22:44,767 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23753 states.
[2023-11-29 05:22:44,933 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23753 to 12146.
[2023-11-29 05:22:44,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12146 states, 12145 states have (on average 1.6663647591601483) internal successors, (20238), 12145 states have internal predecessors, (20238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:44,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12146 states to 12146 states and 20238 transitions.
[2023-11-29 05:22:44,962 INFO  L78                 Accepts]: Start accepts. Automaton has 12146 states and 20238 transitions. Word has length 1268
[2023-11-29 05:22:44,964 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:22:44,964 INFO  L495      AbstractCegarLoop]: Abstraction has 12146 states and 20238 transitions.
[2023-11-29 05:22:44,964 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:44,964 INFO  L276                IsEmpty]: Start isEmpty. Operand 12146 states and 20238 transitions.
[2023-11-29 05:22:44,976 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1270
[2023-11-29 05:22:44,976 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:22:44,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:44,977 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 05:22:44,977 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:22:44,978 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:22:44,978 INFO  L85        PathProgramCache]: Analyzing trace with hash 87613818, now seen corresponding path program 1 times
[2023-11-29 05:22:44,978 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:22:44,979 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334296876]
[2023-11-29 05:22:44,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:22:44,979 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:22:45,378 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:22:47,159 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 05:22:47,159 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:22:47,159 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334296876]
[2023-11-29 05:22:47,159 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334296876] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:22:47,159 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:22:47,159 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:22:47,160 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511170127]
[2023-11-29 05:22:47,160 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:22:47,162 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:22:47,162 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:22:47,163 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:22:47,163 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:22:47,164 INFO  L87              Difference]: Start difference. First operand 12146 states and 20238 transitions. Second operand  has 5 states, 5 states have (on average 253.8) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:47,735 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:22:47,735 INFO  L93              Difference]: Finished difference Result 36733 states and 61208 transitions.
[2023-11-29 05:22:47,736 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:22:47,736 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 253.8) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 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 1269
[2023-11-29 05:22:47,739 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:22:47,768 INFO  L225             Difference]: With dead ends: 36733
[2023-11-29 05:22:47,768 INFO  L226             Difference]: Without dead ends: 25116
[2023-11-29 05:22:47,783 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:22:47,785 INFO  L413           NwaCegarLoop]: 22493 mSDtfsCounter, 79266 mSDsluCounter, 40452 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79266 SdHoareTripleChecker+Valid, 62945 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:22:47,785 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [79266 Valid, 62945 Invalid, 16 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:22:47,807 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25116 states.
[2023-11-29 05:22:47,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25116 to 13505.
[2023-11-29 05:22:47,987 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13505 states, 13504 states have (on average 1.6663951421800949) internal successors, (22503), 13504 states have internal predecessors, (22503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:48,002 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13505 states to 13505 states and 22503 transitions.
[2023-11-29 05:22:48,002 INFO  L78                 Accepts]: Start accepts. Automaton has 13505 states and 22503 transitions. Word has length 1269
[2023-11-29 05:22:48,003 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:22:48,003 INFO  L495      AbstractCegarLoop]: Abstraction has 13505 states and 22503 transitions.
[2023-11-29 05:22:48,004 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 253.8) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:22:48,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 13505 states and 22503 transitions.
[2023-11-29 05:22:48,452 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8997
[2023-11-29 05:22:48,452 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:22:48,457 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]
[2023-11-29 05:22:48,457 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 05:22:48,457 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:22:48,458 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:22:48,460 INFO  L85        PathProgramCache]: Analyzing trace with hash -310442186, now seen corresponding path program 1 times
[2023-11-29 05:22:48,461 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:22:48,461 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683815666]
[2023-11-29 05:22:48,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:22:48,462 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:22:49,592 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:22:49,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158656972]
[2023-11-29 05:22:49,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:22:49,595 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:22:49,595 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:22:49,599 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:22:49,600 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 05:23:01,923 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:23:02,208 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45310 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:23:02,494 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:23:04,367 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 8 proven. 675 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked.
[2023-11-29 05:23:04,367 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:23:04,650 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked.
[2023-11-29 05:23:04,650 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:23:04,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683815666]
[2023-11-29 05:23:04,651 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:23:04,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158656972]
[2023-11-29 05:23:04,651 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158656972] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:23:04,651 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:23:04,656 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:23:04,656 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903503630]
[2023-11-29 05:23:04,656 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:23:04,666 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:23:04,667 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:23:04,675 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:23:04,675 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:23:04,679 INFO  L87              Difference]: Start difference. First operand 13505 states and 22503 transitions. Second operand  has 5 states, 5 states have (on average 1618.6) internal successors, (8093), 5 states have internal predecessors, (8093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:23:21,191 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:23:21,191 INFO  L93              Difference]: Finished difference Result 47130 states and 78129 transitions.
[2023-11-29 05:23:21,191 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:23:21,193 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1618.6) internal successors, (8093), 5 states have internal predecessors, (8093), 0 states have call successors, (0), 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 8996
[2023-11-29 05:23:21,206 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:23:21,236 INFO  L225             Difference]: With dead ends: 47130
[2023-11-29 05:23:21,236 INFO  L226             Difference]: Without dead ends: 25115
[2023-11-29 05:23:21,250 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17991 GetRequests, 17982 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:23:21,251 INFO  L413           NwaCegarLoop]: 32107 mSDtfsCounter, 35034 mSDsluCounter, 48634 mSDsCounter, 0 mSdLazyCounter, 22665 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35034 SdHoareTripleChecker+Valid, 80741 SdHoareTripleChecker+Invalid, 23880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 22665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time
[2023-11-29 05:23:21,251 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35034 Valid, 80741 Invalid, 23880 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 22665 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time]
[2023-11-29 05:23:21,271 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25115 states.
[2023-11-29 05:23:21,440 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25115 to 13507.
[2023-11-29 05:23:21,451 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13507 states, 13506 states have (on average 1.6662964608322228) internal successors, (22505), 13506 states have internal predecessors, (22505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:23:21,465 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 22505 transitions.
[2023-11-29 05:23:21,465 INFO  L78                 Accepts]: Start accepts. Automaton has 13507 states and 22505 transitions. Word has length 8996
[2023-11-29 05:23:21,481 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:23:21,481 INFO  L495      AbstractCegarLoop]: Abstraction has 13507 states and 22505 transitions.
[2023-11-29 05:23:21,483 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1618.6) internal successors, (8093), 5 states have internal predecessors, (8093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:23:21,483 INFO  L276                IsEmpty]: Start isEmpty. Operand 13507 states and 22505 transitions.
[2023-11-29 05:23:21,878 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8998
[2023-11-29 05:23:21,878 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:23:21,882 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]
[2023-11-29 05:23:21,997 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 05:23:22,083 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:23:22,083 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:23:22,084 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:23:22,087 INFO  L85        PathProgramCache]: Analyzing trace with hash -1232568752, now seen corresponding path program 1 times
[2023-11-29 05:23:22,087 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:23:22,087 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356704413]
[2023-11-29 05:23:22,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:23:22,088 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:23:23,171 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:23:23,171 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430153407]
[2023-11-29 05:23:23,173 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:23:23,174 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:23:23,174 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:23:23,175 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:23:23,178 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 05:23:34,683 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:23:34,953 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45313 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:23:35,079 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:23:36,362 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 10 proven. 675 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked.
[2023-11-29 05:23:36,362 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:23:36,544 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked.
[2023-11-29 05:23:36,545 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:23:36,545 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356704413]
[2023-11-29 05:23:36,545 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:23:36,545 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430153407]
[2023-11-29 05:23:36,545 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430153407] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:23:36,545 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:23:36,548 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:23:36,549 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776010671]
[2023-11-29 05:23:36,549 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:23:36,560 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:23:36,560 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:23:36,568 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:23:36,569 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:23:36,571 INFO  L87              Difference]: Start difference. First operand 13507 states and 22505 transitions. Second operand  has 5 states, 5 states have (on average 1619.2) internal successors, (8096), 5 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:23:51,404 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:23:51,404 INFO  L93              Difference]: Finished difference Result 47138 states and 78137 transitions.
[2023-11-29 05:23:51,404 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:23:51,406 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1619.2) internal successors, (8096), 5 states have internal predecessors, (8096), 0 states have call successors, (0), 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 8997
[2023-11-29 05:23:51,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:23:51,441 INFO  L225             Difference]: With dead ends: 47138
[2023-11-29 05:23:51,442 INFO  L226             Difference]: Without dead ends: 25116
[2023-11-29 05:23:51,448 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17993 GetRequests, 17984 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:23:51,448 INFO  L413           NwaCegarLoop]: 32099 mSDtfsCounter, 50722 mSDsluCounter, 31877 mSDsCounter, 0 mSdLazyCounter, 16925 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50722 SdHoareTripleChecker+Valid, 63976 SdHoareTripleChecker+Invalid, 18140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 16925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:23:51,449 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50722 Valid, 63976 Invalid, 18140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 16925 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time]
[2023-11-29 05:23:51,468 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25116 states.
[2023-11-29 05:23:51,625 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25116 to 13509.
[2023-11-29 05:23:51,637 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13509 states, 13508 states have (on average 1.6661978087059521) internal successors, (22507), 13508 states have internal predecessors, (22507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:23:51,650 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13509 states to 13509 states and 22507 transitions.
[2023-11-29 05:23:51,650 INFO  L78                 Accepts]: Start accepts. Automaton has 13509 states and 22507 transitions. Word has length 8997
[2023-11-29 05:23:51,656 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:23:51,656 INFO  L495      AbstractCegarLoop]: Abstraction has 13509 states and 22507 transitions.
[2023-11-29 05:23:51,658 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1619.2) internal successors, (8096), 5 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:23:51,658 INFO  L276                IsEmpty]: Start isEmpty. Operand 13509 states and 22507 transitions.
[2023-11-29 05:23:52,002 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8999
[2023-11-29 05:23:52,003 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:23:52,007 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:23:52,120 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 05:23:52,207 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:23:52,208 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:23:52,208 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:23:52,211 INFO  L85        PathProgramCache]: Analyzing trace with hash -14931044, now seen corresponding path program 1 times
[2023-11-29 05:23:52,211 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:23:52,211 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681393584]
[2023-11-29 05:23:52,212 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:23:52,212 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:23:53,046 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:23:53,046 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303286991]
[2023-11-29 05:23:53,048 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:23:53,048 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:23:53,048 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:23:53,049 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:23:53,050 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 05:24:04,640 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:04,921 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45316 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:24:05,042 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:24:06,249 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 12 proven. 675 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked.
[2023-11-29 05:24:06,250 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:24:06,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked.
[2023-11-29 05:24:06,416 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:06,416 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681393584]
[2023-11-29 05:24:06,416 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:24:06,416 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303286991]
[2023-11-29 05:24:06,416 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [303286991] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:24:06,416 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:24:06,419 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:24:06,419 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907363517]
[2023-11-29 05:24:06,419 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:06,425 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:24:06,425 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:06,431 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:24:06,431 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:24:06,433 INFO  L87              Difference]: Start difference. First operand 13509 states and 22507 transitions. Second operand  has 5 states, 5 states have (on average 1619.8) internal successors, (8099), 5 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:24:21,098 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:21,098 INFO  L93              Difference]: Finished difference Result 47146 states and 78145 transitions.
[2023-11-29 05:24:21,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:24:21,099 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1619.8) internal successors, (8099), 5 states have internal predecessors, (8099), 0 states have call successors, (0), 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 8998
[2023-11-29 05:24:21,106 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:21,131 INFO  L225             Difference]: With dead ends: 47146
[2023-11-29 05:24:21,131 INFO  L226             Difference]: Without dead ends: 25117
[2023-11-29 05:24:21,142 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17995 GetRequests, 17986 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:24:21,143 INFO  L413           NwaCegarLoop]: 32091 mSDtfsCounter, 50714 mSDsluCounter, 31872 mSDsCounter, 0 mSdLazyCounter, 16925 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50714 SdHoareTripleChecker+Valid, 63963 SdHoareTripleChecker+Invalid, 18140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 16925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:21,143 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50714 Valid, 63963 Invalid, 18140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 16925 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time]
[2023-11-29 05:24:21,169 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25117 states.
[2023-11-29 05:24:21,357 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25117 to 13511.
[2023-11-29 05:24:21,370 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13511 states, 13510 states have (on average 1.666099185788305) internal successors, (22509), 13510 states have internal predecessors, (22509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:24:21,391 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13511 states to 13511 states and 22509 transitions.
[2023-11-29 05:24:21,391 INFO  L78                 Accepts]: Start accepts. Automaton has 13511 states and 22509 transitions. Word has length 8998
[2023-11-29 05:24:21,398 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:21,399 INFO  L495      AbstractCegarLoop]: Abstraction has 13511 states and 22509 transitions.
[2023-11-29 05:24:21,400 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1619.8) internal successors, (8099), 5 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:24:21,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 13511 states and 22509 transitions.
[2023-11-29 05:24:21,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9000
[2023-11-29 05:24:21,869 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:21,874 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]
[2023-11-29 05:24:21,987 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 05:24:22,074 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:22,074 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:22,075 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:22,078 INFO  L85        PathProgramCache]: Analyzing trace with hash -1832759188, now seen corresponding path program 1 times
[2023-11-29 05:24:22,078 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:22,078 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703359085]
[2023-11-29 05:24:22,079 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:22,079 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:22,916 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:24:22,917 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137693625]
[2023-11-29 05:24:22,918 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:22,918 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:22,918 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:22,919 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:24:22,920 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 05:24:34,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:34,513 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45320 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:24:34,685 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:24:35,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 14 proven. 675 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked.
[2023-11-29 05:24:35,695 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:24:35,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked.
[2023-11-29 05:24:35,866 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:35,866 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703359085]
[2023-11-29 05:24:35,866 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:24:35,866 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137693625]
[2023-11-29 05:24:35,866 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [137693625] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:24:35,866 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:24:35,869 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:24:35,869 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827627579]
[2023-11-29 05:24:35,869 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:35,876 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:24:35,876 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:35,881 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:24:35,881 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:24:35,883 INFO  L87              Difference]: Start difference. First operand 13511 states and 22509 transitions. Second operand  has 5 states, 5 states have (on average 1620.4) internal successors, (8102), 5 states have internal predecessors, (8102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:24:52,377 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:52,378 INFO  L93              Difference]: Finished difference Result 47154 states and 78153 transitions.
[2023-11-29 05:24:52,378 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:24:52,380 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1620.4) internal successors, (8102), 5 states have internal predecessors, (8102), 0 states have call successors, (0), 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 8999
[2023-11-29 05:24:52,386 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:52,408 INFO  L225             Difference]: With dead ends: 47154
[2023-11-29 05:24:52,408 INFO  L226             Difference]: Without dead ends: 25118
[2023-11-29 05:24:52,419 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17997 GetRequests, 17988 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:24:52,420 INFO  L413           NwaCegarLoop]: 32083 mSDtfsCounter, 35021 mSDsluCounter, 46334 mSDsCounter, 0 mSdLazyCounter, 21789 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35021 SdHoareTripleChecker+Valid, 78417 SdHoareTripleChecker+Invalid, 23004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 21789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:52,420 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35021 Valid, 78417 Invalid, 23004 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1215 Valid, 21789 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time]
[2023-11-29 05:24:52,441 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25118 states.
[2023-11-29 05:24:52,594 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25118 to 13513.
[2023-11-29 05:24:52,606 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13513 states, 13512 states have (on average 1.6660005920663115) internal successors, (22511), 13512 states have internal predecessors, (22511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:24:52,622 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13513 states to 13513 states and 22511 transitions.
[2023-11-29 05:24:52,623 INFO  L78                 Accepts]: Start accepts. Automaton has 13513 states and 22511 transitions. Word has length 8999
[2023-11-29 05:24:52,629 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:52,629 INFO  L495      AbstractCegarLoop]: Abstraction has 13513 states and 22511 transitions.
[2023-11-29 05:24:52,631 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1620.4) internal successors, (8102), 5 states have internal predecessors, (8102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:24:52,631 INFO  L276                IsEmpty]: Start isEmpty. Operand 13513 states and 22511 transitions.
[2023-11-29 05:24:53,004 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9001
[2023-11-29 05:24:53,004 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:53,008 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:24:53,123 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 05:24:53,211 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2023-11-29 05:24:53,211 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:53,212 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:53,215 INFO  L85        PathProgramCache]: Analyzing trace with hash 1505977732, now seen corresponding path program 1 times
[2023-11-29 05:24:53,215 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:53,215 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432845681]
[2023-11-29 05:24:53,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:53,216 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:54,072 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:24:54,072 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985237118]
[2023-11-29 05:24:54,073 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:54,074 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:24:54,074 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:24:54,074 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:24:54,075 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 05:25:05,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:05,709 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45323 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:25:05,822 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:25:06,849 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 16 proven. 675 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked.
[2023-11-29 05:25:06,850 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:25:07,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked.
[2023-11-29 05:25:07,022 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:07,023 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432845681]
[2023-11-29 05:25:07,023 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:25:07,023 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985237118]
[2023-11-29 05:25:07,023 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [985237118] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:25:07,023 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:25:07,025 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:25:07,026 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793085593]
[2023-11-29 05:25:07,026 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:25:07,032 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:25:07,032 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:25:07,038 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:25:07,038 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:25:07,040 INFO  L87              Difference]: Start difference. First operand 13513 states and 22511 transitions. Second operand  has 5 states, 5 states have (on average 1621.0) internal successors, (8105), 5 states have internal predecessors, (8105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:25:23,025 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:23,026 INFO  L93              Difference]: Finished difference Result 47162 states and 78161 transitions.
[2023-11-29 05:25:23,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:25:23,027 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1621.0) internal successors, (8105), 5 states have internal predecessors, (8105), 0 states have call successors, (0), 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 9000
[2023-11-29 05:25:23,033 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:23,054 INFO  L225             Difference]: With dead ends: 47162
[2023-11-29 05:25:23,054 INFO  L226             Difference]: Without dead ends: 25119
[2023-11-29 05:25:23,066 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17999 GetRequests, 17990 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:25:23,067 INFO  L413           NwaCegarLoop]: 32075 mSDtfsCounter, 35016 mSDsluCounter, 46326 mSDsCounter, 0 mSdLazyCounter, 21789 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35016 SdHoareTripleChecker+Valid, 78401 SdHoareTripleChecker+Invalid, 23004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 21789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:23,067 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35016 Valid, 78401 Invalid, 23004 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 21789 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time]
[2023-11-29 05:25:23,087 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25119 states.
[2023-11-29 05:25:23,218 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25119 to 13515.
[2023-11-29 05:25:23,229 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13515 states, 13514 states have (on average 1.665902027527009) internal successors, (22513), 13514 states have internal predecessors, (22513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:25:23,242 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13515 states to 13515 states and 22513 transitions.
[2023-11-29 05:25:23,243 INFO  L78                 Accepts]: Start accepts. Automaton has 13515 states and 22513 transitions. Word has length 9000
[2023-11-29 05:25:23,247 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:23,247 INFO  L495      AbstractCegarLoop]: Abstraction has 13515 states and 22513 transitions.
[2023-11-29 05:25:23,248 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1621.0) internal successors, (8105), 5 states have internal predecessors, (8105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:25:23,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 13515 states and 22513 transitions.
[2023-11-29 05:25:23,612 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9002
[2023-11-29 05:25:23,612 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:23,615 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]
[2023-11-29 05:25:23,727 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-29 05:25:23,816 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-29 05:25:23,816 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:23,817 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:23,820 INFO  L85        PathProgramCache]: Analyzing trace with hash 114728198, now seen corresponding path program 1 times
[2023-11-29 05:25:23,820 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:23,820 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152767453]
[2023-11-29 05:25:23,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:23,821 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:24,613 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:25:24,614 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692697622]
[2023-11-29 05:25:24,615 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:24,615 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:24,615 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:24,616 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:24,617 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 05:25:36,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:36,582 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45326 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:25:36,695 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:25:37,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 18 proven. 675 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked.
[2023-11-29 05:25:37,917 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:25:38,097 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked.
[2023-11-29 05:25:38,097 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:38,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152767453]
[2023-11-29 05:25:38,097 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:25:38,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692697622]
[2023-11-29 05:25:38,097 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [692697622] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:25:38,097 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:25:38,100 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:25:38,100 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875457850]
[2023-11-29 05:25:38,100 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:25:38,107 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:25:38,107 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:25:38,112 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:25:38,112 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:25:38,114 INFO  L87              Difference]: Start difference. First operand 13515 states and 22513 transitions. Second operand  has 5 states, 5 states have (on average 1621.6) internal successors, (8108), 5 states have internal predecessors, (8108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:25:54,993 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:25:54,994 INFO  L93              Difference]: Finished difference Result 47170 states and 78169 transitions.
[2023-11-29 05:25:54,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:25:54,995 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1621.6) internal successors, (8108), 5 states have internal predecessors, (8108), 0 states have call successors, (0), 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 9001
[2023-11-29 05:25:55,001 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:25:55,016 INFO  L225             Difference]: With dead ends: 47170
[2023-11-29 05:25:55,016 INFO  L226             Difference]: Without dead ends: 25120
[2023-11-29 05:25:55,024 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18001 GetRequests, 17992 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:25:55,025 INFO  L413           NwaCegarLoop]: 32067 mSDtfsCounter, 35004 mSDsluCounter, 48584 mSDsCounter, 0 mSdLazyCounter, 22665 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35004 SdHoareTripleChecker+Valid, 80651 SdHoareTripleChecker+Invalid, 23880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 22665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:25:55,025 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35004 Valid, 80651 Invalid, 23880 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 22665 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time]
[2023-11-29 05:25:55,043 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25120 states.
[2023-11-29 05:25:55,191 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25120 to 13517.
[2023-11-29 05:25:55,202 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13517 states, 13516 states have (on average 1.665803492157443) internal successors, (22515), 13516 states have internal predecessors, (22515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:25:55,215 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13517 states to 13517 states and 22515 transitions.
[2023-11-29 05:25:55,215 INFO  L78                 Accepts]: Start accepts. Automaton has 13517 states and 22515 transitions. Word has length 9001
[2023-11-29 05:25:55,220 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:25:55,220 INFO  L495      AbstractCegarLoop]: Abstraction has 13517 states and 22515 transitions.
[2023-11-29 05:25:55,221 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1621.6) internal successors, (8108), 5 states have internal predecessors, (8108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:25:55,221 INFO  L276                IsEmpty]: Start isEmpty. Operand 13517 states and 22515 transitions.
[2023-11-29 05:25:55,557 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9003
[2023-11-29 05:25:55,557 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:25:55,560 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]
[2023-11-29 05:25:55,676 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-29 05:25:55,760 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 05:25:55,761 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:25:55,761 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:25:55,763 INFO  L85        PathProgramCache]: Analyzing trace with hash 1672613354, now seen corresponding path program 1 times
[2023-11-29 05:25:55,763 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:25:55,763 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405161653]
[2023-11-29 05:25:55,764 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:55,764 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:56,572 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:25:56,572 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39913710]
[2023-11-29 05:25:56,573 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:56,574 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:56,574 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:56,574 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:56,575 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 05:26:08,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:26:08,364 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45329 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:26:08,509 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:26:09,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 20 proven. 675 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked.
[2023-11-29 05:26:09,522 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:26:09,903 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked.
[2023-11-29 05:26:09,903 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:26:09,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405161653]
[2023-11-29 05:26:09,904 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:26:09,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39913710]
[2023-11-29 05:26:09,904 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [39913710] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:26:09,904 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:26:09,909 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:26:09,910 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820718976]
[2023-11-29 05:26:09,910 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:26:09,918 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:26:09,918 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:26:09,924 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:26:09,924 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:26:09,926 INFO  L87              Difference]: Start difference. First operand 13517 states and 22515 transitions. Second operand  has 5 states, 5 states have (on average 1622.2) internal successors, (8111), 5 states have internal predecessors, (8111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:26:26,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:26:26,717 INFO  L93              Difference]: Finished difference Result 47178 states and 78177 transitions.
[2023-11-29 05:26:26,718 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:26:26,719 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1622.2) internal successors, (8111), 5 states have internal predecessors, (8111), 0 states have call successors, (0), 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 9002
[2023-11-29 05:26:26,724 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:26:26,740 INFO  L225             Difference]: With dead ends: 47178
[2023-11-29 05:26:26,740 INFO  L226             Difference]: Without dead ends: 25121
[2023-11-29 05:26:26,748 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18003 GetRequests, 17994 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:26:26,749 INFO  L413           NwaCegarLoop]: 32059 mSDtfsCounter, 34998 mSDsluCounter, 48574 mSDsCounter, 0 mSdLazyCounter, 22665 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34998 SdHoareTripleChecker+Valid, 80633 SdHoareTripleChecker+Invalid, 23880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 22665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:26:26,749 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34998 Valid, 80633 Invalid, 23880 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 22665 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time]
[2023-11-29 05:26:26,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25121 states.
[2023-11-29 05:26:26,899 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25121 to 13519.
[2023-11-29 05:26:26,909 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13519 states, 13518 states have (on average 1.6657049859446664) internal successors, (22517), 13518 states have internal predecessors, (22517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:26:26,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13519 states to 13519 states and 22517 transitions.
[2023-11-29 05:26:26,923 INFO  L78                 Accepts]: Start accepts. Automaton has 13519 states and 22517 transitions. Word has length 9002
[2023-11-29 05:26:26,927 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:26:26,928 INFO  L495      AbstractCegarLoop]: Abstraction has 13519 states and 22517 transitions.
[2023-11-29 05:26:26,929 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1622.2) internal successors, (8111), 5 states have internal predecessors, (8111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:26:26,929 INFO  L276                IsEmpty]: Start isEmpty. Operand 13519 states and 22517 transitions.
[2023-11-29 05:26:27,304 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9004
[2023-11-29 05:26:27,304 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:26:27,306 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]
[2023-11-29 05:26:27,420 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-29 05:26:27,507 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 05:26:27,507 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:26:27,508 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:26:27,509 INFO  L85        PathProgramCache]: Analyzing trace with hash -1226516446, now seen corresponding path program 1 times
[2023-11-29 05:26:27,509 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:26:27,509 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628392200]
[2023-11-29 05:26:27,510 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:27,510 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:26:28,327 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:26:28,327 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197112160]
[2023-11-29 05:26:28,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:28,329 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:28,329 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:26:28,329 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:26:28,330 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 05:26:39,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:26:39,886 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45333 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:26:39,984 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:26:41,153 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 22 proven. 675 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked.
[2023-11-29 05:26:41,153 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:26:41,319 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked.
[2023-11-29 05:26:41,320 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:26:41,320 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628392200]
[2023-11-29 05:26:41,320 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:26:41,320 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197112160]
[2023-11-29 05:26:41,320 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [197112160] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:26:41,320 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:26:41,326 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:26:41,326 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16710286]
[2023-11-29 05:26:41,326 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:26:41,330 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:26:41,330 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:26:41,337 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:26:41,337 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:26:41,340 INFO  L87              Difference]: Start difference. First operand 13519 states and 22517 transitions. Second operand  has 5 states, 5 states have (on average 1622.8) internal successors, (8114), 5 states have internal predecessors, (8114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:26:57,667 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:26:57,667 INFO  L93              Difference]: Finished difference Result 47186 states and 78185 transitions.
[2023-11-29 05:26:57,668 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:26:57,669 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1622.8) internal successors, (8114), 5 states have internal predecessors, (8114), 0 states have call successors, (0), 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 9003
[2023-11-29 05:26:57,675 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:26:57,696 INFO  L225             Difference]: With dead ends: 47186
[2023-11-29 05:26:57,697 INFO  L226             Difference]: Without dead ends: 25122
[2023-11-29 05:26:57,704 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18005 GetRequests, 17996 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:26:57,704 INFO  L413           NwaCegarLoop]: 32051 mSDtfsCounter, 35001 mSDsluCounter, 46302 mSDsCounter, 0 mSdLazyCounter, 21789 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35001 SdHoareTripleChecker+Valid, 78353 SdHoareTripleChecker+Invalid, 23004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 21789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:26:57,705 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35001 Valid, 78353 Invalid, 23004 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 21789 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time]
[2023-11-29 05:26:57,722 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25122 states.
[2023-11-29 05:26:57,843 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25122 to 13521.
[2023-11-29 05:26:57,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13521 states, 13520 states have (on average 1.6656065088757397) internal successors, (22519), 13520 states have internal predecessors, (22519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:26:57,867 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 22519 transitions.
[2023-11-29 05:26:57,867 INFO  L78                 Accepts]: Start accepts. Automaton has 13521 states and 22519 transitions. Word has length 9003
[2023-11-29 05:26:57,871 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:26:57,871 INFO  L495      AbstractCegarLoop]: Abstraction has 13521 states and 22519 transitions.
[2023-11-29 05:26:57,872 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1622.8) internal successors, (8114), 5 states have internal predecessors, (8114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:26:57,873 INFO  L276                IsEmpty]: Start isEmpty. Operand 13521 states and 22519 transitions.
[2023-11-29 05:26:58,204 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9005
[2023-11-29 05:26:58,204 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:26:58,206 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]
[2023-11-29 05:26:58,319 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-29 05:26:58,406 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:58,407 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:26:58,407 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:26:58,408 INFO  L85        PathProgramCache]: Analyzing trace with hash 1958041810, now seen corresponding path program 1 times
[2023-11-29 05:26:58,408 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:26:58,409 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095563831]
[2023-11-29 05:26:58,409 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:58,409 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:26:59,224 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:26:59,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112861077]
[2023-11-29 05:26:59,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:26:59,225 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:26:59,226 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:26:59,226 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:26:59,227 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 05:27:10,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:27:10,720 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45336 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:27:10,816 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:27:11,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 24 proven. 675 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked.
[2023-11-29 05:27:11,821 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:27:11,984 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked.
[2023-11-29 05:27:11,985 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:27:11,985 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095563831]
[2023-11-29 05:27:11,985 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:27:11,985 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112861077]
[2023-11-29 05:27:11,985 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [112861077] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:27:11,985 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:27:11,988 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:27:11,988 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632803139]
[2023-11-29 05:27:11,988 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:27:11,992 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:27:11,992 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:27:11,996 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:27:11,996 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:27:11,998 INFO  L87              Difference]: Start difference. First operand 13521 states and 22519 transitions. Second operand  has 5 states, 5 states have (on average 1623.4) internal successors, (8117), 5 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:27:28,443 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:27:28,443 INFO  L93              Difference]: Finished difference Result 47194 states and 78193 transitions.
[2023-11-29 05:27:28,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:27:28,445 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1623.4) internal successors, (8117), 5 states have internal predecessors, (8117), 0 states have call successors, (0), 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 9004
[2023-11-29 05:27:28,451 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:27:28,470 INFO  L225             Difference]: With dead ends: 47194
[2023-11-29 05:27:28,470 INFO  L226             Difference]: Without dead ends: 25123
[2023-11-29 05:27:28,481 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18007 GetRequests, 17998 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:27:28,482 INFO  L413           NwaCegarLoop]: 32043 mSDtfsCounter, 34986 mSDsluCounter, 48554 mSDsCounter, 0 mSdLazyCounter, 22665 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34986 SdHoareTripleChecker+Valid, 80597 SdHoareTripleChecker+Invalid, 23880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 22665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time
[2023-11-29 05:27:28,482 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34986 Valid, 80597 Invalid, 23880 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 22665 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time]
[2023-11-29 05:27:28,501 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25123 states.
[2023-11-29 05:27:28,625 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25123 to 13523.
[2023-11-29 05:27:28,636 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13523 states, 13522 states have (on average 1.665508060937731) internal successors, (22521), 13522 states have internal predecessors, (22521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:27:28,649 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13523 states to 13523 states and 22521 transitions.
[2023-11-29 05:27:28,650 INFO  L78                 Accepts]: Start accepts. Automaton has 13523 states and 22521 transitions. Word has length 9004
[2023-11-29 05:27:28,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:27:28,654 INFO  L495      AbstractCegarLoop]: Abstraction has 13523 states and 22521 transitions.
[2023-11-29 05:27:28,655 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1623.4) internal successors, (8117), 5 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:27:28,656 INFO  L276                IsEmpty]: Start isEmpty. Operand 13523 states and 22521 transitions.
[2023-11-29 05:27:29,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9006
[2023-11-29 05:27:29,074 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:27:29,075 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]
[2023-11-29 05:27:29,190 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 05:27:29,276 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 05:27:29,276 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:27:29,277 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:27:29,279 INFO  L85        PathProgramCache]: Analyzing trace with hash -1652358980, now seen corresponding path program 1 times
[2023-11-29 05:27:29,279 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:27:29,279 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430042814]
[2023-11-29 05:27:29,280 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:29,280 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:27:30,093 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:27:30,094 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779569068]
[2023-11-29 05:27:30,095 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:30,095 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:30,095 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:27:30,096 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:27:30,097 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 05:27:41,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:27:41,624 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45339 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:27:41,722 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:27:42,710 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 26 proven. 675 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked.
[2023-11-29 05:27:42,710 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:27:42,872 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked.
[2023-11-29 05:27:42,872 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:27:42,872 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430042814]
[2023-11-29 05:27:42,872 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:27:42,872 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779569068]
[2023-11-29 05:27:42,872 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [779569068] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:27:42,872 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:27:42,875 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:27:42,875 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624728398]
[2023-11-29 05:27:42,875 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:27:42,879 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:27:42,879 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:27:42,883 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:27:42,883 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:27:42,885 INFO  L87              Difference]: Start difference. First operand 13523 states and 22521 transitions. Second operand  has 5 states, 5 states have (on average 1624.0) internal successors, (8120), 5 states have internal predecessors, (8120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:27:57,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:27:57,418 INFO  L93              Difference]: Finished difference Result 47202 states and 78201 transitions.
[2023-11-29 05:27:57,418 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:27:57,420 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1624.0) internal successors, (8120), 5 states have internal predecessors, (8120), 0 states have call successors, (0), 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 9005
[2023-11-29 05:27:57,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:27:57,446 INFO  L225             Difference]: With dead ends: 47202
[2023-11-29 05:27:57,446 INFO  L226             Difference]: Without dead ends: 25124
[2023-11-29 05:27:57,457 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18009 GetRequests, 18000 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:27:57,457 INFO  L413           NwaCegarLoop]: 32035 mSDtfsCounter, 50658 mSDsluCounter, 31837 mSDsCounter, 0 mSdLazyCounter, 16925 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50658 SdHoareTripleChecker+Valid, 63872 SdHoareTripleChecker+Invalid, 18140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 16925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:27:57,458 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50658 Valid, 63872 Invalid, 18140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 16925 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time]
[2023-11-29 05:27:57,476 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25124 states.
[2023-11-29 05:27:57,602 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25124 to 13525.
[2023-11-29 05:27:57,613 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13525 states, 13524 states have (on average 1.6654096421177167) internal successors, (22523), 13524 states have internal predecessors, (22523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:27:57,627 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13525 states to 13525 states and 22523 transitions.
[2023-11-29 05:27:57,627 INFO  L78                 Accepts]: Start accepts. Automaton has 13525 states and 22523 transitions. Word has length 9005
[2023-11-29 05:27:57,631 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:27:57,632 INFO  L495      AbstractCegarLoop]: Abstraction has 13525 states and 22523 transitions.
[2023-11-29 05:27:57,633 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1624.0) internal successors, (8120), 5 states have internal predecessors, (8120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:27:57,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 13525 states and 22523 transitions.
[2023-11-29 05:27:58,077 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9007
[2023-11-29 05:27:58,077 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:27:58,079 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]
[2023-11-29 05:27:58,193 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 05:27:58,279 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 05:27:58,279 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:27:58,280 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:27:58,282 INFO  L85        PathProgramCache]: Analyzing trace with hash 2005992760, now seen corresponding path program 1 times
[2023-11-29 05:27:58,282 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:27:58,282 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763688709]
[2023-11-29 05:27:58,283 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:58,283 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:27:59,067 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:27:59,067 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997208747]
[2023-11-29 05:27:59,069 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:27:59,069 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:27:59,069 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:27:59,070 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:27:59,071 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 05:28:10,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:28:10,576 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45342 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:28:10,673 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:28:11,684 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 28 proven. 675 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked.
[2023-11-29 05:28:11,684 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:28:12,129 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked.
[2023-11-29 05:28:12,130 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:28:12,130 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763688709]
[2023-11-29 05:28:12,130 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:28:12,130 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997208747]
[2023-11-29 05:28:12,130 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [997208747] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:28:12,130 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:28:12,135 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:28:12,135 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206204916]
[2023-11-29 05:28:12,136 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:28:12,140 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:28:12,140 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:28:12,146 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:28:12,146 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:28:12,148 INFO  L87              Difference]: Start difference. First operand 13525 states and 22523 transitions. Second operand  has 5 states, 5 states have (on average 1624.6) internal successors, (8123), 5 states have internal predecessors, (8123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:28:28,505 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:28:28,505 INFO  L93              Difference]: Finished difference Result 47210 states and 78209 transitions.
[2023-11-29 05:28:28,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:28:28,507 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1624.6) internal successors, (8123), 5 states have internal predecessors, (8123), 0 states have call successors, (0), 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 9006
[2023-11-29 05:28:28,513 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:28:28,534 INFO  L225             Difference]: With dead ends: 47210
[2023-11-29 05:28:28,534 INFO  L226             Difference]: Without dead ends: 25125
[2023-11-29 05:28:28,546 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18011 GetRequests, 18002 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:28:28,547 INFO  L413           NwaCegarLoop]: 32027 mSDtfsCounter, 34986 mSDsluCounter, 46278 mSDsCounter, 0 mSdLazyCounter, 21789 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34986 SdHoareTripleChecker+Valid, 78305 SdHoareTripleChecker+Invalid, 23004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 21789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:28:28,547 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34986 Valid, 78305 Invalid, 23004 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 21789 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time]
[2023-11-29 05:28:28,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25125 states.
[2023-11-29 05:28:28,882 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25125 to 13527.
[2023-11-29 05:28:28,893 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13527 states, 13526 states have (on average 1.6653112524027798) internal successors, (22525), 13526 states have internal predecessors, (22525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:28:28,906 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13527 states to 13527 states and 22525 transitions.
[2023-11-29 05:28:28,906 INFO  L78                 Accepts]: Start accepts. Automaton has 13527 states and 22525 transitions. Word has length 9006
[2023-11-29 05:28:28,910 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:28:28,911 INFO  L495      AbstractCegarLoop]: Abstraction has 13527 states and 22525 transitions.
[2023-11-29 05:28:28,912 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1624.6) internal successors, (8123), 5 states have internal predecessors, (8123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:28:28,912 INFO  L276                IsEmpty]: Start isEmpty. Operand 13527 states and 22525 transitions.
[2023-11-29 05:28:29,243 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9008
[2023-11-29 05:28:29,243 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:28:29,246 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]
[2023-11-29 05:28:29,360 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-11-29 05:28:29,446 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 05:28:29,446 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:28:29,447 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:28:29,448 INFO  L85        PathProgramCache]: Analyzing trace with hash -1233214248, now seen corresponding path program 1 times
[2023-11-29 05:28:29,448 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:28:29,448 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818573319]
[2023-11-29 05:28:29,449 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:28:29,449 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:28:30,231 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:28:30,231 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095508824]
[2023-11-29 05:28:30,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:28:30,233 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:28:30,233 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:28:30,234 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:28:30,235 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 05:28:41,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:28:41,939 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45346 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:28:42,037 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:28:43,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 30 proven. 675 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked.
[2023-11-29 05:28:43,009 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:28:43,183 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked.
[2023-11-29 05:28:43,183 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:28:43,183 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818573319]
[2023-11-29 05:28:43,183 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:28:43,184 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095508824]
[2023-11-29 05:28:43,184 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095508824] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:28:43,184 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:28:43,187 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:28:43,187 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817005035]
[2023-11-29 05:28:43,187 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:28:43,191 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:28:43,192 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:28:43,196 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:28:43,196 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:28:43,198 INFO  L87              Difference]: Start difference. First operand 13527 states and 22525 transitions. Second operand  has 5 states, 5 states have (on average 1625.2) internal successors, (8126), 5 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:28:59,403 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:28:59,403 INFO  L93              Difference]: Finished difference Result 47218 states and 78217 transitions.
[2023-11-29 05:28:59,403 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:28:59,405 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1625.2) internal successors, (8126), 5 states have internal predecessors, (8126), 0 states have call successors, (0), 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 9007
[2023-11-29 05:28:59,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:28:59,431 INFO  L225             Difference]: With dead ends: 47218
[2023-11-29 05:28:59,431 INFO  L226             Difference]: Without dead ends: 25126
[2023-11-29 05:28:59,443 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18013 GetRequests, 18004 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:28:59,443 INFO  L413           NwaCegarLoop]: 32019 mSDtfsCounter, 34981 mSDsluCounter, 46270 mSDsCounter, 0 mSdLazyCounter, 21789 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34981 SdHoareTripleChecker+Valid, 78289 SdHoareTripleChecker+Invalid, 23004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 21789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time
[2023-11-29 05:28:59,443 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34981 Valid, 78289 Invalid, 23004 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 21789 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time]
[2023-11-29 05:28:59,463 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25126 states.
[2023-11-29 05:28:59,591 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25126 to 13529.
[2023-11-29 05:28:59,601 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13529 states, 13528 states have (on average 1.6652128917800118) internal successors, (22527), 13528 states have internal predecessors, (22527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:28:59,615 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13529 states to 13529 states and 22527 transitions.
[2023-11-29 05:28:59,616 INFO  L78                 Accepts]: Start accepts. Automaton has 13529 states and 22527 transitions. Word has length 9007
[2023-11-29 05:28:59,620 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:28:59,620 INFO  L495      AbstractCegarLoop]: Abstraction has 13529 states and 22527 transitions.
[2023-11-29 05:28:59,621 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1625.2) internal successors, (8126), 5 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:28:59,621 INFO  L276                IsEmpty]: Start isEmpty. Operand 13529 states and 22527 transitions.
[2023-11-29 05:28:59,952 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9009
[2023-11-29 05:28:59,952 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:28:59,954 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]
[2023-11-29 05:29:00,067 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 05:29:00,154 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 05:29:00,155 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:29:00,155 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:29:00,156 INFO  L85        PathProgramCache]: Analyzing trace with hash 12607776, now seen corresponding path program 1 times
[2023-11-29 05:29:00,156 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:29:00,156 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810597110]
[2023-11-29 05:29:00,157 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:00,157 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:29:00,946 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:29:00,946 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850700844]
[2023-11-29 05:29:00,948 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:00,948 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:29:00,948 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:29:00,949 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:29:00,950 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 05:29:12,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:29:12,652 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45349 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:29:12,775 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:29:13,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 32 proven. 675 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked.
[2023-11-29 05:29:13,748 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:29:13,955 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked.
[2023-11-29 05:29:13,955 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:29:13,955 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810597110]
[2023-11-29 05:29:13,955 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:29:13,955 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850700844]
[2023-11-29 05:29:13,955 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [850700844] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:29:13,955 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:29:13,958 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:29:13,958 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846048047]
[2023-11-29 05:29:13,958 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:29:13,964 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:29:13,964 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:29:13,971 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:29:13,971 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:29:13,973 INFO  L87              Difference]: Start difference. First operand 13529 states and 22527 transitions. Second operand  has 5 states, 5 states have (on average 1625.8) internal successors, (8129), 5 states have internal predecessors, (8129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:29:30,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:29:30,183 INFO  L93              Difference]: Finished difference Result 47226 states and 78225 transitions.
[2023-11-29 05:29:30,183 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:29:30,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1625.8) internal successors, (8129), 5 states have internal predecessors, (8129), 0 states have call successors, (0), 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 9008
[2023-11-29 05:29:30,190 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:29:30,209 INFO  L225             Difference]: With dead ends: 47226
[2023-11-29 05:29:30,210 INFO  L226             Difference]: Without dead ends: 25127
[2023-11-29 05:29:30,221 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18015 GetRequests, 18006 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:29:30,222 INFO  L413           NwaCegarLoop]: 32011 mSDtfsCounter, 34976 mSDsluCounter, 46262 mSDsCounter, 0 mSdLazyCounter, 21789 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34976 SdHoareTripleChecker+Valid, 78273 SdHoareTripleChecker+Invalid, 23004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 21789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time
[2023-11-29 05:29:30,222 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34976 Valid, 78273 Invalid, 23004 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 21789 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time]
[2023-11-29 05:29:30,242 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25127 states.
[2023-11-29 05:29:30,368 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25127 to 13531.
[2023-11-29 05:29:30,378 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13531 states, 13530 states have (on average 1.6651145602365114) internal successors, (22529), 13530 states have internal predecessors, (22529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:29:30,392 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 22529 transitions.
[2023-11-29 05:29:30,393 INFO  L78                 Accepts]: Start accepts. Automaton has 13531 states and 22529 transitions. Word has length 9008
[2023-11-29 05:29:30,397 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:29:30,397 INFO  L495      AbstractCegarLoop]: Abstraction has 13531 states and 22529 transitions.
[2023-11-29 05:29:30,399 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1625.8) internal successors, (8129), 5 states have internal predecessors, (8129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:29:30,399 INFO  L276                IsEmpty]: Start isEmpty. Operand 13531 states and 22529 transitions.
[2023-11-29 05:29:30,730 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9010
[2023-11-29 05:29:30,730 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:29:30,732 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]
[2023-11-29 05:29:30,843 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 05:29:30,932 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 05:29:30,933 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:29:30,933 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:29:30,934 INFO  L85        PathProgramCache]: Analyzing trace with hash 2005608818, now seen corresponding path program 1 times
[2023-11-29 05:29:30,934 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:29:30,934 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88932305]
[2023-11-29 05:29:30,935 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:30,935 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:29:31,749 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:29:31,749 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140210049]
[2023-11-29 05:29:31,751 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:29:31,751 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:29:31,751 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:29:31,752 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:29:31,753 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 05:29:42,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:29:43,141 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45352 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:29:43,236 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:29:44,241 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 34 proven. 675 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked.
[2023-11-29 05:29:44,241 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:29:44,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked.
[2023-11-29 05:29:44,736 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:29:44,736 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88932305]
[2023-11-29 05:29:44,736 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:29:44,736 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140210049]
[2023-11-29 05:29:44,736 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [140210049] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:29:44,736 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:29:44,742 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 05:29:44,742 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266719303]
[2023-11-29 05:29:44,742 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:29:44,746 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:29:44,746 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:29:44,750 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:29:44,750 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-11-29 05:29:44,752 INFO  L87              Difference]: Start difference. First operand 13531 states and 22529 transitions. Second operand  has 6 states, 6 states have (on average 1355.3333333333333) internal successors, (8132), 6 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:30:16,107 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:30:16,107 INFO  L93              Difference]: Finished difference Result 58913 states and 97676 transitions.
[2023-11-29 05:30:16,107 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 05:30:16,109 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1355.3333333333333) internal successors, (8132), 6 states have internal predecessors, (8132), 0 states have call successors, (0), 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 9009
[2023-11-29 05:30:16,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:30:16,137 INFO  L225             Difference]: With dead ends: 58913
[2023-11-29 05:30:16,137 INFO  L226             Difference]: Without dead ends: 36807
[2023-11-29 05:30:16,146 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18018 GetRequests, 18006 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2023-11-29 05:30:16,147 INFO  L413           NwaCegarLoop]: 32005 mSDtfsCounter, 54302 mSDsluCounter, 108632 mSDsCounter, 0 mSdLazyCounter, 46653 mSolverCounterSat, 1217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54302 SdHoareTripleChecker+Valid, 140637 SdHoareTripleChecker+Invalid, 47870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1217 IncrementalHoareTripleChecker+Valid, 46653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time
[2023-11-29 05:30:16,147 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [54302 Valid, 140637 Invalid, 47870 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1217 Valid, 46653 Invalid, 0 Unknown, 0 Unchecked, 29.8s Time]
[2023-11-29 05:30:16,170 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36807 states.
[2023-11-29 05:30:16,315 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36807 to 13533.
[2023-11-29 05:30:16,325 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13533 states, 13532 states have (on average 1.6650162577593852) internal successors, (22531), 13532 states have internal predecessors, (22531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:30:16,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13533 states to 13533 states and 22531 transitions.
[2023-11-29 05:30:16,339 INFO  L78                 Accepts]: Start accepts. Automaton has 13533 states and 22531 transitions. Word has length 9009
[2023-11-29 05:30:16,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:30:16,344 INFO  L495      AbstractCegarLoop]: Abstraction has 13533 states and 22531 transitions.
[2023-11-29 05:30:16,345 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1355.3333333333333) internal successors, (8132), 6 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:30:16,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 13533 states and 22531 transitions.
[2023-11-29 05:30:16,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9011
[2023-11-29 05:30:16,775 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:30:16,776 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:30:16,887 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 05:30:16,977 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 05:30:16,977 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:30:16,978 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:30:16,979 INFO  L85        PathProgramCache]: Analyzing trace with hash 858034566, now seen corresponding path program 1 times
[2023-11-29 05:30:16,979 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:30:16,979 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619647721]
[2023-11-29 05:30:16,980 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:16,980 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:30:17,767 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:30:17,768 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097451886]
[2023-11-29 05:30:17,769 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:17,769 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:30:17,769 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:30:17,770 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:30:17,771 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 05:30:28,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:30:28,973 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45355 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:30:29,064 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:30:30,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 36 proven. 675 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked.
[2023-11-29 05:30:30,028 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:30:30,201 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked.
[2023-11-29 05:30:30,201 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:30:30,201 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619647721]
[2023-11-29 05:30:30,201 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:30:30,201 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097451886]
[2023-11-29 05:30:30,201 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097451886] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:30:30,201 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:30:30,204 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:30:30,204 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733266647]
[2023-11-29 05:30:30,204 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:30:30,208 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:30:30,208 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:30:30,212 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:30:30,212 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:30:30,214 INFO  L87              Difference]: Start difference. First operand 13533 states and 22531 transitions. Second operand  has 5 states, 5 states have (on average 1627.0) internal successors, (8135), 5 states have internal predecessors, (8135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:30:44,808 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:30:44,808 INFO  L93              Difference]: Finished difference Result 47242 states and 78241 transitions.
[2023-11-29 05:30:44,809 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:30:44,810 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1627.0) internal successors, (8135), 5 states have internal predecessors, (8135), 0 states have call successors, (0), 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 9010
[2023-11-29 05:30:44,816 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:30:44,836 INFO  L225             Difference]: With dead ends: 47242
[2023-11-29 05:30:44,836 INFO  L226             Difference]: Without dead ends: 25129
[2023-11-29 05:30:44,847 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18019 GetRequests, 18010 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:30:44,848 INFO  L413           NwaCegarLoop]: 31995 mSDtfsCounter, 50602 mSDsluCounter, 31813 mSDsCounter, 0 mSdLazyCounter, 16925 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50602 SdHoareTripleChecker+Valid, 63808 SdHoareTripleChecker+Invalid, 18140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 16925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time
[2023-11-29 05:30:44,848 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50602 Valid, 63808 Invalid, 18140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 16925 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time]
[2023-11-29 05:30:44,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25129 states.
[2023-11-29 05:30:45,005 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25129 to 13535.
[2023-11-29 05:30:45,017 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13535 states, 13534 states have (on average 1.6649179843357471) internal successors, (22533), 13534 states have internal predecessors, (22533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:30:45,031 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13535 states to 13535 states and 22533 transitions.
[2023-11-29 05:30:45,031 INFO  L78                 Accepts]: Start accepts. Automaton has 13535 states and 22533 transitions. Word has length 9010
[2023-11-29 05:30:45,036 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:30:45,036 INFO  L495      AbstractCegarLoop]: Abstraction has 13535 states and 22533 transitions.
[2023-11-29 05:30:45,037 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1627.0) internal successors, (8135), 5 states have internal predecessors, (8135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:30:45,037 INFO  L276                IsEmpty]: Start isEmpty. Operand 13535 states and 22533 transitions.
[2023-11-29 05:30:45,402 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9012
[2023-11-29 05:30:45,402 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:30:45,403 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]
[2023-11-29 05:30:45,519 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 05:30:45,604 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:30:45,604 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:30:45,605 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:30:45,606 INFO  L85        PathProgramCache]: Analyzing trace with hash 1439512206, now seen corresponding path program 1 times
[2023-11-29 05:30:45,606 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:30:45,606 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955365419]
[2023-11-29 05:30:45,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:45,607 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:30:46,407 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:30:46,407 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340657534]
[2023-11-29 05:30:46,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:30:46,408 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:30:46,409 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:30:46,409 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:30:46,410 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 05:30:59,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:30:59,597 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45359 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:30:59,697 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:31:00,743 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 38 proven. 675 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked.
[2023-11-29 05:31:00,743 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:31:00,937 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked.
[2023-11-29 05:31:00,938 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:31:00,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955365419]
[2023-11-29 05:31:00,938 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:31:00,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340657534]
[2023-11-29 05:31:00,938 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340657534] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:31:00,938 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:31:00,941 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:31:00,941 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273658873]
[2023-11-29 05:31:00,941 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:31:00,947 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:31:00,947 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:31:00,951 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:31:00,951 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:31:00,953 INFO  L87              Difference]: Start difference. First operand 13535 states and 22533 transitions. Second operand  has 5 states, 5 states have (on average 1627.6) internal successors, (8138), 5 states have internal predecessors, (8138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:31:18,712 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:31:18,712 INFO  L93              Difference]: Finished difference Result 47250 states and 78249 transitions.
[2023-11-29 05:31:18,712 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:31:18,714 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1627.6) internal successors, (8138), 5 states have internal predecessors, (8138), 0 states have call successors, (0), 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 9011
[2023-11-29 05:31:18,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:31:18,738 INFO  L225             Difference]: With dead ends: 47250
[2023-11-29 05:31:18,738 INFO  L226             Difference]: Without dead ends: 25130
[2023-11-29 05:31:18,747 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18021 GetRequests, 18012 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:31:18,748 INFO  L413           NwaCegarLoop]: 31987 mSDtfsCounter, 34944 mSDsluCounter, 48484 mSDsCounter, 0 mSdLazyCounter, 22665 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34944 SdHoareTripleChecker+Valid, 80471 SdHoareTripleChecker+Invalid, 23880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 22665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time
[2023-11-29 05:31:18,748 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34944 Valid, 80471 Invalid, 23880 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1215 Valid, 22665 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time]
[2023-11-29 05:31:18,770 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25130 states.
[2023-11-29 05:31:18,901 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25130 to 13537.
[2023-11-29 05:31:18,913 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13537 states, 13536 states have (on average 1.6648197399527187) internal successors, (22535), 13536 states have internal predecessors, (22535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:31:18,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13537 states to 13537 states and 22535 transitions.
[2023-11-29 05:31:18,928 INFO  L78                 Accepts]: Start accepts. Automaton has 13537 states and 22535 transitions. Word has length 9011
[2023-11-29 05:31:18,933 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:31:18,933 INFO  L495      AbstractCegarLoop]: Abstraction has 13537 states and 22535 transitions.
[2023-11-29 05:31:18,935 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1627.6) internal successors, (8138), 5 states have internal predecessors, (8138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:31:18,935 INFO  L276                IsEmpty]: Start isEmpty. Operand 13537 states and 22535 transitions.
[2023-11-29 05:31:19,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9013
[2023-11-29 05:31:19,301 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:31:19,302 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]
[2023-11-29 05:31:19,432 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 05:31:19,503 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:31:19,503 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:31:19,504 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:31:19,505 INFO  L85        PathProgramCache]: Analyzing trace with hash -1315963282, now seen corresponding path program 1 times
[2023-11-29 05:31:19,505 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:31:19,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182350980]
[2023-11-29 05:31:19,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:19,506 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:31:20,320 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:31:20,320 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024334622]
[2023-11-29 05:31:20,322 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:20,322 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:31:20,322 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:31:20,323 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:31:20,323 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 05:31:32,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:31:32,492 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45362 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:31:32,604 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:31:33,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 40 proven. 675 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked.
[2023-11-29 05:31:33,852 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:31:34,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked.
[2023-11-29 05:31:34,043 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:31:34,043 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182350980]
[2023-11-29 05:31:34,043 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:31:34,043 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024334622]
[2023-11-29 05:31:34,043 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024334622] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:31:34,044 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:31:34,047 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:31:34,047 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220750215]
[2023-11-29 05:31:34,047 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:31:34,052 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:31:34,052 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:31:34,056 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:31:34,056 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:31:34,058 INFO  L87              Difference]: Start difference. First operand 13537 states and 22535 transitions. Second operand  has 5 states, 5 states have (on average 1628.2) internal successors, (8141), 5 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:31:48,871 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:31:48,871 INFO  L93              Difference]: Finished difference Result 47258 states and 78257 transitions.
[2023-11-29 05:31:48,871 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:31:48,873 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1628.2) internal successors, (8141), 5 states have internal predecessors, (8141), 0 states have call successors, (0), 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 9012
[2023-11-29 05:31:48,879 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:31:48,899 INFO  L225             Difference]: With dead ends: 47258
[2023-11-29 05:31:48,899 INFO  L226             Difference]: Without dead ends: 25131
[2023-11-29 05:31:48,912 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18023 GetRequests, 18014 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:31:48,913 INFO  L413           NwaCegarLoop]: 31979 mSDtfsCounter, 50584 mSDsluCounter, 31803 mSDsCounter, 0 mSdLazyCounter, 16925 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50584 SdHoareTripleChecker+Valid, 63782 SdHoareTripleChecker+Invalid, 18140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 16925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:31:48,913 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50584 Valid, 63782 Invalid, 18140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 16925 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time]
[2023-11-29 05:31:48,935 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25131 states.
[2023-11-29 05:31:49,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25131 to 13539.
[2023-11-29 05:31:49,260 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13539 states, 13538 states have (on average 1.6647215245974294) internal successors, (22537), 13538 states have internal predecessors, (22537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:31:49,274 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 22537 transitions.
[2023-11-29 05:31:49,274 INFO  L78                 Accepts]: Start accepts. Automaton has 13539 states and 22537 transitions. Word has length 9012
[2023-11-29 05:31:49,279 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:31:49,279 INFO  L495      AbstractCegarLoop]: Abstraction has 13539 states and 22537 transitions.
[2023-11-29 05:31:49,280 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1628.2) internal successors, (8141), 5 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:31:49,281 INFO  L276                IsEmpty]: Start isEmpty. Operand 13539 states and 22537 transitions.
[2023-11-29 05:31:49,616 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9014
[2023-11-29 05:31:49,616 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:31:49,618 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 05:31:49,735 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 05:31:49,818 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:31:49,818 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:31:49,819 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:31:49,820 INFO  L85        PathProgramCache]: Analyzing trace with hash -1691576536, now seen corresponding path program 1 times
[2023-11-29 05:31:49,820 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:31:49,820 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793025918]
[2023-11-29 05:31:49,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:49,821 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:31:50,649 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:31:50,649 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089790816]
[2023-11-29 05:31:50,651 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:31:50,651 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:31:50,651 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:31:50,652 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:31:50,654 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 05:32:02,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:32:02,988 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45365 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:32:03,103 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:32:04,099 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 42 proven. 675 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked.
[2023-11-29 05:32:04,099 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:32:04,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked.
[2023-11-29 05:32:04,288 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:32:04,288 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793025918]
[2023-11-29 05:32:04,288 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:32:04,288 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089790816]
[2023-11-29 05:32:04,289 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089790816] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:32:04,289 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:32:04,294 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:32:04,294 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283344843]
[2023-11-29 05:32:04,295 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:32:04,299 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:32:04,299 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:32:04,303 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:32:04,303 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:32:04,306 INFO  L87              Difference]: Start difference. First operand 13539 states and 22537 transitions. Second operand  has 5 states, 5 states have (on average 1628.8) internal successors, (8144), 5 states have internal predecessors, (8144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:32:19,180 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:32:19,180 INFO  L93              Difference]: Finished difference Result 47266 states and 78265 transitions.
[2023-11-29 05:32:19,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:32:19,182 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1628.8) internal successors, (8144), 5 states have internal predecessors, (8144), 0 states have call successors, (0), 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 9013
[2023-11-29 05:32:19,189 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:32:19,208 INFO  L225             Difference]: With dead ends: 47266
[2023-11-29 05:32:19,208 INFO  L226             Difference]: Without dead ends: 25132
[2023-11-29 05:32:19,220 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18025 GetRequests, 18016 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:32:19,221 INFO  L413           NwaCegarLoop]: 31971 mSDtfsCounter, 50594 mSDsluCounter, 31797 mSDsCounter, 0 mSdLazyCounter, 16925 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50594 SdHoareTripleChecker+Valid, 63768 SdHoareTripleChecker+Invalid, 18140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 16925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:32:19,221 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50594 Valid, 63768 Invalid, 18140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 16925 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time]
[2023-11-29 05:32:19,243 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25132 states.
[2023-11-29 05:32:19,383 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25132 to 13541.
[2023-11-29 05:32:19,395 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13541 states, 13540 states have (on average 1.6646233382570161) internal successors, (22539), 13540 states have internal predecessors, (22539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:32:19,411 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13541 states to 13541 states and 22539 transitions.
[2023-11-29 05:32:19,411 INFO  L78                 Accepts]: Start accepts. Automaton has 13541 states and 22539 transitions. Word has length 9013
[2023-11-29 05:32:19,415 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:32:19,416 INFO  L495      AbstractCegarLoop]: Abstraction has 13541 states and 22539 transitions.
[2023-11-29 05:32:19,417 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1628.8) internal successors, (8144), 5 states have internal predecessors, (8144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:32:19,417 INFO  L276                IsEmpty]: Start isEmpty. Operand 13541 states and 22539 transitions.
[2023-11-29 05:32:19,752 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9015
[2023-11-29 05:32:19,752 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:32:19,753 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]
[2023-11-29 05:32:19,879 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 05:32:19,955 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:19,955 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:32:19,955 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:32:19,956 INFO  L85        PathProgramCache]: Analyzing trace with hash -535285036, now seen corresponding path program 1 times
[2023-11-29 05:32:19,957 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:32:19,957 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063854873]
[2023-11-29 05:32:19,957 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:19,958 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:32:20,825 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:32:20,825 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897300944]
[2023-11-29 05:32:20,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:20,827 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:20,827 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:32:20,829 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:32:20,829 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 05:32:32,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:32:33,252 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45368 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:32:33,357 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:32:34,464 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 44 proven. 675 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked.
[2023-11-29 05:32:34,464 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:32:34,670 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked.
[2023-11-29 05:32:34,670 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:32:34,670 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063854873]
[2023-11-29 05:32:34,671 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:32:34,671 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897300944]
[2023-11-29 05:32:34,671 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897300944] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:32:34,671 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:32:34,673 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:32:34,674 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887095423]
[2023-11-29 05:32:34,674 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:32:34,678 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:32:34,678 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:32:34,682 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:32:34,682 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:32:34,684 INFO  L87              Difference]: Start difference. First operand 13541 states and 22539 transitions. Second operand  has 5 states, 5 states have (on average 1629.4) internal successors, (8147), 5 states have internal predecessors, (8147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:32:49,730 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:32:49,731 INFO  L93              Difference]: Finished difference Result 47274 states and 78273 transitions.
[2023-11-29 05:32:49,731 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:32:49,733 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1629.4) internal successors, (8147), 5 states have internal predecessors, (8147), 0 states have call successors, (0), 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 9014
[2023-11-29 05:32:49,739 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:32:49,758 INFO  L225             Difference]: With dead ends: 47274
[2023-11-29 05:32:49,758 INFO  L226             Difference]: Without dead ends: 25133
[2023-11-29 05:32:49,770 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18027 GetRequests, 18018 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:32:49,771 INFO  L413           NwaCegarLoop]: 31963 mSDtfsCounter, 50566 mSDsluCounter, 31793 mSDsCounter, 0 mSdLazyCounter, 16925 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50566 SdHoareTripleChecker+Valid, 63756 SdHoareTripleChecker+Invalid, 18140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 16925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:32:49,771 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50566 Valid, 63756 Invalid, 18140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 16925 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time]
[2023-11-29 05:32:49,793 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25133 states.
[2023-11-29 05:32:49,934 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25133 to 13543.
[2023-11-29 05:32:49,946 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13543 states, 13542 states have (on average 1.6645251809186234) internal successors, (22541), 13542 states have internal predecessors, (22541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:32:49,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13543 states to 13543 states and 22541 transitions.
[2023-11-29 05:32:49,962 INFO  L78                 Accepts]: Start accepts. Automaton has 13543 states and 22541 transitions. Word has length 9014
[2023-11-29 05:32:49,967 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:32:49,967 INFO  L495      AbstractCegarLoop]: Abstraction has 13543 states and 22541 transitions.
[2023-11-29 05:32:49,969 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1629.4) internal successors, (8147), 5 states have internal predecessors, (8147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:32:49,969 INFO  L276                IsEmpty]: Start isEmpty. Operand 13543 states and 22541 transitions.
[2023-11-29 05:32:50,305 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9016
[2023-11-29 05:32:50,306 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:32:50,307 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]
[2023-11-29 05:32:50,431 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 05:32:50,508 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:50,508 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:32:50,509 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:32:50,510 INFO  L85        PathProgramCache]: Analyzing trace with hash 575540548, now seen corresponding path program 1 times
[2023-11-29 05:32:50,510 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:32:50,510 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308774837]
[2023-11-29 05:32:50,510 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:50,511 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:32:51,395 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:32:51,396 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366507987]
[2023-11-29 05:32:51,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:32:51,397 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:32:51,397 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:32:51,398 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:32:51,399 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 05:33:03,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:33:03,874 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45372 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:33:03,978 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:33:05,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 46 proven. 675 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked.
[2023-11-29 05:33:05,045 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:33:05,239 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked.
[2023-11-29 05:33:05,239 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:33:05,239 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308774837]
[2023-11-29 05:33:05,239 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:33:05,239 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366507987]
[2023-11-29 05:33:05,239 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [366507987] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:33:05,239 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:33:05,244 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:33:05,244 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052749395]
[2023-11-29 05:33:05,244 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:33:05,250 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:33:05,250 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:33:05,254 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:33:05,254 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:33:05,256 INFO  L87              Difference]: Start difference. First operand 13543 states and 22541 transitions. Second operand  has 5 states, 5 states have (on average 1630.0) internal successors, (8150), 5 states have internal predecessors, (8150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:33:20,716 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:33:20,716 INFO  L93              Difference]: Finished difference Result 47282 states and 78281 transitions.
[2023-11-29 05:33:20,717 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:33:20,718 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1630.0) internal successors, (8150), 5 states have internal predecessors, (8150), 0 states have call successors, (0), 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 9015
[2023-11-29 05:33:20,723 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:33:20,741 INFO  L225             Difference]: With dead ends: 47282
[2023-11-29 05:33:20,741 INFO  L226             Difference]: Without dead ends: 25134
[2023-11-29 05:33:20,750 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18029 GetRequests, 18020 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:33:20,750 INFO  L413           NwaCegarLoop]: 31955 mSDtfsCounter, 50578 mSDsluCounter, 31787 mSDsCounter, 0 mSdLazyCounter, 16925 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50578 SdHoareTripleChecker+Valid, 63742 SdHoareTripleChecker+Invalid, 18140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 16925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time
[2023-11-29 05:33:20,750 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50578 Valid, 63742 Invalid, 18140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 16925 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time]
[2023-11-29 05:33:20,770 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25134 states.
[2023-11-29 05:33:20,901 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25134 to 13545.
[2023-11-29 05:33:20,913 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13545 states, 13544 states have (on average 1.6644270525694034) internal successors, (22543), 13544 states have internal predecessors, (22543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:33:20,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13545 states to 13545 states and 22543 transitions.
[2023-11-29 05:33:20,928 INFO  L78                 Accepts]: Start accepts. Automaton has 13545 states and 22543 transitions. Word has length 9015
[2023-11-29 05:33:20,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:33:20,933 INFO  L495      AbstractCegarLoop]: Abstraction has 13545 states and 22543 transitions.
[2023-11-29 05:33:20,934 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1630.0) internal successors, (8150), 5 states have internal predecessors, (8150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:33:20,934 INFO  L276                IsEmpty]: Start isEmpty. Operand 13545 states and 22543 transitions.
[2023-11-29 05:33:21,269 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9017
[2023-11-29 05:33:21,270 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:33:21,271 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 05:33:21,400 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 05:33:21,472 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:33:21,473 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:33:21,473 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:33:21,475 INFO  L85        PathProgramCache]: Analyzing trace with hash 202354876, now seen corresponding path program 1 times
[2023-11-29 05:33:21,475 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:33:21,475 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751073027]
[2023-11-29 05:33:21,477 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:21,477 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:33:22,345 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:33:22,345 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482394953]
[2023-11-29 05:33:22,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:22,347 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:33:22,347 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:33:22,348 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:33:22,348 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 05:33:34,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:33:35,027 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45375 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 05:33:35,129 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:33:36,232 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 48 proven. 675 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked.
[2023-11-29 05:33:36,232 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:33:36,435 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked.
[2023-11-29 05:33:36,436 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:33:36,436 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751073027]
[2023-11-29 05:33:36,436 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:33:36,436 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482394953]
[2023-11-29 05:33:36,436 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [482394953] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:33:36,436 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:33:36,439 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 05:33:36,439 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853430113]
[2023-11-29 05:33:36,439 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:33:36,442 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:33:36,443 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:33:36,446 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:33:36,446 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 05:33:36,447 INFO  L87              Difference]: Start difference. First operand 13545 states and 22543 transitions. Second operand  has 5 states, 5 states have (on average 1630.6) internal successors, (8153), 5 states have internal predecessors, (8153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:33:52,635 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:33:52,636 INFO  L93              Difference]: Finished difference Result 47290 states and 78289 transitions.
[2023-11-29 05:33:52,636 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:33:52,638 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1630.6) internal successors, (8153), 5 states have internal predecessors, (8153), 0 states have call successors, (0), 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 9016
[2023-11-29 05:33:52,644 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:33:52,666 INFO  L225             Difference]: With dead ends: 47290
[2023-11-29 05:33:52,666 INFO  L226             Difference]: Without dead ends: 25135
[2023-11-29 05:33:52,680 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18031 GetRequests, 18022 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:33:52,680 INFO  L413           NwaCegarLoop]: 31947 mSDtfsCounter, 50570 mSDsluCounter, 31782 mSDsCounter, 0 mSdLazyCounter, 16925 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50570 SdHoareTripleChecker+Valid, 63729 SdHoareTripleChecker+Invalid, 18140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 16925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:33:52,681 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50570 Valid, 63729 Invalid, 18140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1215 Valid, 16925 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time]
[2023-11-29 05:33:52,704 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25135 states.
[2023-11-29 05:33:52,857 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25135 to 13547.
[2023-11-29 05:33:52,870 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13547 states, 13546 states have (on average 1.6643289531965155) internal successors, (22545), 13546 states have internal predecessors, (22545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:33:52,894 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13547 states to 13547 states and 22545 transitions.
[2023-11-29 05:33:52,894 INFO  L78                 Accepts]: Start accepts. Automaton has 13547 states and 22545 transitions. Word has length 9016
[2023-11-29 05:33:52,900 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:33:52,901 INFO  L495      AbstractCegarLoop]: Abstraction has 13547 states and 22545 transitions.
[2023-11-29 05:33:52,902 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1630.6) internal successors, (8153), 5 states have internal predecessors, (8153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:33:52,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 13547 states and 22545 transitions.
[2023-11-29 05:33:53,247 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9018
[2023-11-29 05:33:53,247 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:33:53,250 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 05:33:53,391 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 05:33:53,450 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-29 05:33:53,451 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:33:53,451 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:33:53,452 INFO  L85        PathProgramCache]: Analyzing trace with hash 2011482590, now seen corresponding path program 1 times
[2023-11-29 05:33:53,452 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:33:53,452 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634766992]
[2023-11-29 05:33:53,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:53,454 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:33:54,395 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:33:54,395 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511521334]
[2023-11-29 05:33:54,396 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:33:54,397 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:33:54,397 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:33:54,397 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:33:54,398 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88adc93b-3665-4253-b97a-00d5a8a2e296/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 05:34:06,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:34:07,164 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45378 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 05:34:07,270 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:34:08,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 50 proven. 675 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2023-11-29 05:34:08,316 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:34:08,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked.
[2023-11-29 05:34:08,547 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:34:08,547 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634766992]
[2023-11-29 05:34:08,547 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:34:08,547 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511521334]
[2023-11-29 05:34:08,547 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511521334] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:34:08,547 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 05:34:08,550 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 05:34:08,550 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986414164]
[2023-11-29 05:34:08,550 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:34:08,554 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 05:34:08,554 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:34:08,557 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 05:34:08,557 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-11-29 05:34:08,559 INFO  L87              Difference]: Start difference. First operand 13547 states and 22545 transitions. Second operand  has 6 states, 6 states have (on average 1359.3333333333333) internal successors, (8156), 6 states have internal predecessors, (8156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)