./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/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_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/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_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/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 377d5ab19f8a90b5f1960cdd7e45a4f856e30fe60c96a270791278dec7660bca
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 02:41:34,481 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 02:41:34,558 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 02:41:34,563 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 02:41:34,563 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 02:41:34,587 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 02:41:34,587 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 02:41:34,587 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 02:41:34,588 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 02:41:34,589 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 02:41:34,589 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 02:41:34,590 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 02:41:34,591 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 02:41:34,591 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 02:41:34,592 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 02:41:34,592 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 02:41:34,593 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 02:41:34,593 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 02:41:34,594 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 02:41:34,594 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 02:41:34,595 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 02:41:34,596 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 02:41:34,597 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 02:41:34,597 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 02:41:34,597 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 02:41:34,598 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 02:41:34,598 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 02:41:34,598 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 02:41:34,598 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:41:34,599 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 02:41:34,599 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 02:41:34,600 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 02:41:34,600 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 02:41:34,600 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 02:41:34,600 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 02:41:34,601 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 02:41:34,601 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 02:41:34,601 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 02:41:34,601 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 02:41:34,601 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_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/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_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/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 -> 377d5ab19f8a90b5f1960cdd7e45a4f856e30fe60c96a270791278dec7660bca
[2023-11-29 02:41:34,799 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 02:41:34,822 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 02:41:34,824 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 02:41:34,825 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 02:41:34,826 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 02:41:34,827 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop1-back-serstep.c
[2023-11-29 02:41:37,608 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 02:41:38,122 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 02:41:38,122 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop1-back-serstep.c
[2023-11-29 02:41:38,174 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/data/0d69201dd/45b4581e774f4173a919682ec0bd42d5/FLAG222ab1b4c
[2023-11-29 02:41:38,188 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/data/0d69201dd/45b4581e774f4173a919682ec0bd42d5
[2023-11-29 02:41:38,191 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 02:41:38,192 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 02:41:38,194 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 02:41:38,194 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 02:41:38,199 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 02:41:38,200 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:41:38" (1/1) ...
[2023-11-29 02:41:38,201 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140d6f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:38, skipping insertion in model container
[2023-11-29 02:41:38,201 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:41:38" (1/1) ...
[2023-11-29 02:41:38,373 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 02:41:38,672 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_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop1-back-serstep.c[1177,1190]
[2023-11-29 02:41:39,804 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:41:39,813 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 02:41:39,825 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_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop1-back-serstep.c[1177,1190]
[2023-11-29 02:41:40,612 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:41:40,627 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 02:41:40,627 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40 WrapperNode
[2023-11-29 02:41:40,628 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 02:41:40,629 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 02:41:40,629 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 02:41:40,629 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 02:41:40,637 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:40,931 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:43,067 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34583
[2023-11-29 02:41:43,068 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 02:41:43,069 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 02:41:43,069 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 02:41:43,069 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 02:41:43,077 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:43,078 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:43,524 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:43,863 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 02:41:43,864 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:43,864 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:44,372 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:44,485 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:44,672 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:44,764 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:45,209 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 02:41:45,210 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 02:41:45,210 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 02:41:45,210 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 02:41:45,211 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (1/1) ...
[2023-11-29 02:41:45,215 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:41:45,225 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:41:45,235 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 02:41:45,237 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 02:41:45,263 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 02:41:45,263 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 02:41:45,263 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 02:41:45,263 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 02:41:46,771 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 02:41:46,773 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 02:42:03,253 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 02:42:03,763 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 02:42:03,763 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 02:42:03,766 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:42:03 BoogieIcfgContainer
[2023-11-29 02:42:03,766 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 02:42:03,769 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 02:42:03,769 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 02:42:03,772 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 02:42:03,772 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:41:38" (1/3) ...
[2023-11-29 02:42:03,773 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0b756c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:42:03, skipping insertion in model container
[2023-11-29 02:42:03,773 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:41:40" (2/3) ...
[2023-11-29 02:42:03,774 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0b756c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:42:03, skipping insertion in model container
[2023-11-29 02:42:03,774 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:42:03" (3/3) ...
[2023-11-29 02:42:03,775 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.7.prop1-back-serstep.c
[2023-11-29 02:42:03,790 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 02:42:03,790 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 02:42:03,967 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 02:42:03,974 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;@2aa82efa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 02:42:03,974 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 02:42:04,002 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7159 states, 7157 states have (on average 1.6706720693027806) internal successors, (11957), 7158 states have internal predecessors, (11957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:04,046 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 587
[2023-11-29 02:42:04,046 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:42:04,048 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]
[2023-11-29 02:42:04,049 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:42:04,054 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:42:04,055 INFO  L85        PathProgramCache]: Analyzing trace with hash -1803305258, now seen corresponding path program 1 times
[2023-11-29 02:42:04,065 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:42:04,065 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973353442]
[2023-11-29 02:42:04,066 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:04,066 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:42:04,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:42:07,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:42:07,171 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:42:07,171 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973353442]
[2023-11-29 02:42:07,172 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973353442] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:42:07,172 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:42:07,172 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:42:07,174 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906762604]
[2023-11-29 02:42:07,174 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:42:07,180 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:42:07,180 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:42:07,209 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:42:07,210 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:07,229 INFO  L87              Difference]: Start difference. First operand  has 7159 states, 7157 states have (on average 1.6706720693027806) internal successors, (11957), 7158 states have internal predecessors, (11957), 0 states have call successors, (0), 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 146.5) internal successors, (586), 4 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:07,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:42:07,691 INFO  L93              Difference]: Finished difference Result 14092 states and 23540 transitions.
[2023-11-29 02:42:07,693 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:42:07,694 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 0 states have call successors, (0), 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 586
[2023-11-29 02:42:07,699 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:42:07,751 INFO  L225             Difference]: With dead ends: 14092
[2023-11-29 02:42:07,751 INFO  L226             Difference]: Without dead ends: 7159
[2023-11-29 02:42:07,765 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:07,768 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 1 mSDsluCounter, 23895 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35845 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:42:07,769 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35845 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:42:07,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7159 states.
[2023-11-29 02:42:07,967 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7159 to 7159.
[2023-11-29 02:42:07,985 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7159 states, 7158 states have (on average 1.6701592623637889) internal successors, (11955), 7158 states have internal predecessors, (11955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:08,010 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7159 states to 7159 states and 11955 transitions.
[2023-11-29 02:42:08,011 INFO  L78                 Accepts]: Start accepts. Automaton has 7159 states and 11955 transitions. Word has length 586
[2023-11-29 02:42:08,013 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:42:08,014 INFO  L495      AbstractCegarLoop]: Abstraction has 7159 states and 11955 transitions.
[2023-11-29 02:42:08,014 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:08,014 INFO  L276                IsEmpty]: Start isEmpty. Operand 7159 states and 11955 transitions.
[2023-11-29 02:42:08,031 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 588
[2023-11-29 02:42:08,031 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:42:08,032 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]
[2023-11-29 02:42:08,032 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 02:42:08,032 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:42:08,033 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:42:08,033 INFO  L85        PathProgramCache]: Analyzing trace with hash -66159710, now seen corresponding path program 1 times
[2023-11-29 02:42:08,034 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:42:08,034 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572571312]
[2023-11-29 02:42:08,034 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:08,035 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:42:08,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:42:09,644 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:42:09,645 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:42:09,645 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572571312]
[2023-11-29 02:42:09,645 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572571312] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:42:09,645 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:42:09,646 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:42:09,646 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552903894]
[2023-11-29 02:42:09,646 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:42:09,649 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:42:09,649 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:42:09,651 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:42:09,651 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:09,652 INFO  L87              Difference]: Start difference. First operand 7159 states and 11955 transitions. Second operand  has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:09,984 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:42:09,984 INFO  L93              Difference]: Finished difference Result 14095 states and 23538 transitions.
[2023-11-29 02:42:09,985 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:42:09,986 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 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 587
[2023-11-29 02:42:09,987 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:42:10,019 INFO  L225             Difference]: With dead ends: 14095
[2023-11-29 02:42:10,019 INFO  L226             Difference]: Without dead ends: 7162
[2023-11-29 02:42:10,027 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:10,028 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 1 mSDsluCounter, 23893 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35843 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:42:10,029 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35843 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:42:10,043 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7162 states.
[2023-11-29 02:42:10,149 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7162 to 7161.
[2023-11-29 02:42:10,164 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7161 states, 7160 states have (on average 1.669972067039106) internal successors, (11957), 7160 states have internal predecessors, (11957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:10,184 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7161 states to 7161 states and 11957 transitions.
[2023-11-29 02:42:10,184 INFO  L78                 Accepts]: Start accepts. Automaton has 7161 states and 11957 transitions. Word has length 587
[2023-11-29 02:42:10,185 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:42:10,185 INFO  L495      AbstractCegarLoop]: Abstraction has 7161 states and 11957 transitions.
[2023-11-29 02:42:10,186 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:10,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 7161 states and 11957 transitions.
[2023-11-29 02:42:10,192 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 589
[2023-11-29 02:42:10,192 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:42:10,193 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]
[2023-11-29 02:42:10,193 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 02:42:10,193 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:42:10,194 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:42:10,195 INFO  L85        PathProgramCache]: Analyzing trace with hash -486372622, now seen corresponding path program 1 times
[2023-11-29 02:42:10,195 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:42:10,195 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824516166]
[2023-11-29 02:42:10,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:10,196 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:42:10,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:42:11,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:42:11,615 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:42:11,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824516166]
[2023-11-29 02:42:11,616 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824516166] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:42:11,616 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:42:11,617 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:42:11,617 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397669073]
[2023-11-29 02:42:11,617 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:42:11,618 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:42:11,618 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:42:11,619 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:42:11,620 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:42:11,621 INFO  L87              Difference]: Start difference. First operand 7161 states and 11957 transitions. Second operand  has 5 states, 5 states have (on average 117.6) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:12,176 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:42:12,176 INFO  L93              Difference]: Finished difference Result 21666 states and 36179 transitions.
[2023-11-29 02:42:12,177 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:42:12,177 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 117.6) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 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 588
[2023-11-29 02:42:12,179 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:42:12,238 INFO  L225             Difference]: With dead ends: 21666
[2023-11-29 02:42:12,238 INFO  L226             Difference]: Without dead ends: 14731
[2023-11-29 02:42:12,248 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:42:12,249 INFO  L413           NwaCegarLoop]: 13019 mSDtfsCounter, 47151 mSDsluCounter, 23894 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47151 SdHoareTripleChecker+Valid, 36913 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:42:12,250 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [47151 Valid, 36913 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:42:12,272 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14731 states.
[2023-11-29 02:42:12,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14731 to 7805.
[2023-11-29 02:42:12,438 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7805 states, 7804 states have (on average 1.6695284469502818) internal successors, (13029), 7804 states have internal predecessors, (13029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:12,453 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7805 states to 7805 states and 13029 transitions.
[2023-11-29 02:42:12,454 INFO  L78                 Accepts]: Start accepts. Automaton has 7805 states and 13029 transitions. Word has length 588
[2023-11-29 02:42:12,454 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:42:12,455 INFO  L495      AbstractCegarLoop]: Abstraction has 7805 states and 13029 transitions.
[2023-11-29 02:42:12,455 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 117.6) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:12,455 INFO  L276                IsEmpty]: Start isEmpty. Operand 7805 states and 13029 transitions.
[2023-11-29 02:42:12,713 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-11-29 02:42:12,713 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:42:12,717 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:42:12,718 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 02:42:12,718 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:42:12,718 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:42:12,720 INFO  L85        PathProgramCache]: Analyzing trace with hash 1097550772, now seen corresponding path program 1 times
[2023-11-29 02:42:12,720 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:42:12,721 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451600263]
[2023-11-29 02:42:12,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:12,721 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:42:13,479 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:42:13,480 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652664424]
[2023-11-29 02:42:13,481 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:13,482 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:42:13,482 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:42:13,485 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:42:13,489 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 02:42:21,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:42:21,374 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30623 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:42:21,535 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:42:21,773 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:42:21,773 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:42:21,774 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:42:21,774 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451600263]
[2023-11-29 02:42:21,774 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:42:21,774 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652664424]
[2023-11-29 02:42:21,774 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [652664424] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:42:21,775 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:42:21,776 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:42:21,777 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922253401]
[2023-11-29 02:42:21,777 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:42:21,784 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:42:21,784 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:42:21,790 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:42:21,790 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:21,792 INFO  L87              Difference]: Start difference. First operand 7805 states and 13029 transitions. Second operand  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:22,022 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:42:22,022 INFO  L93              Difference]: Finished difference Result 14750 states and 24626 transitions.
[2023-11-29 02:42:22,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:42:22,025 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 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 5065
[2023-11-29 02:42:22,026 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:42:22,039 INFO  L225             Difference]: With dead ends: 14750
[2023-11-29 02:42:22,039 INFO  L226             Difference]: Without dead ends: 7815
[2023-11-29 02:42:22,049 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:22,050 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 12 mSDsluCounter, 23890 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35840 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:42:22,051 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35840 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:42:22,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7815 states.
[2023-11-29 02:42:22,184 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 7807.
[2023-11-29 02:42:22,195 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7807 states, 7806 states have (on average 1.6693569049449142) internal successors, (13031), 7806 states have internal predecessors, (13031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:22,207 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7807 states to 7807 states and 13031 transitions.
[2023-11-29 02:42:22,208 INFO  L78                 Accepts]: Start accepts. Automaton has 7807 states and 13031 transitions. Word has length 5065
[2023-11-29 02:42:22,210 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:42:22,210 INFO  L495      AbstractCegarLoop]: Abstraction has 7807 states and 13031 transitions.
[2023-11-29 02:42:22,213 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:22,213 INFO  L276                IsEmpty]: Start isEmpty. Operand 7807 states and 13031 transitions.
[2023-11-29 02:42:22,421 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-11-29 02:42:22,421 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:42:22,425 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:42:22,516 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 02:42:22,625 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:42:22,626 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:42:22,626 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:42:22,628 INFO  L85        PathProgramCache]: Analyzing trace with hash -158064986, now seen corresponding path program 1 times
[2023-11-29 02:42:22,628 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:42:22,628 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133901153]
[2023-11-29 02:42:22,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:22,629 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:42:23,353 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:42:23,353 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897823925]
[2023-11-29 02:42:23,354 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:23,355 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:42:23,355 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:42:23,356 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:42:23,357 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 02:42:31,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:42:31,502 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30624 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:42:31,654 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:42:31,899 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:42:31,900 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:42:31,900 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:42:31,900 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133901153]
[2023-11-29 02:42:31,900 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:42:31,901 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897823925]
[2023-11-29 02:42:31,901 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897823925] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:42:31,901 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:42:31,903 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:42:31,903 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673635371]
[2023-11-29 02:42:31,903 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:42:31,911 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:42:31,912 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:42:31,919 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:42:31,919 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:31,921 INFO  L87              Difference]: Start difference. First operand 7807 states and 13031 transitions. Second operand  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:32,181 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:42:32,182 INFO  L93              Difference]: Finished difference Result 14753 states and 24628 transitions.
[2023-11-29 02:42:32,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:42:32,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 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 5065
[2023-11-29 02:42:32,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:42:32,196 INFO  L225             Difference]: With dead ends: 14753
[2023-11-29 02:42:32,196 INFO  L226             Difference]: Without dead ends: 7816
[2023-11-29 02:42:32,203 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:32,204 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 12 mSDsluCounter, 23890 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35840 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:42:32,205 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35840 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:42:32,216 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7816 states.
[2023-11-29 02:42:32,314 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7816 to 7808.
[2023-11-29 02:42:32,323 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7808 states, 7807 states have (on average 1.6692711669014986) internal successors, (13032), 7807 states have internal predecessors, (13032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:32,335 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7808 states to 7808 states and 13032 transitions.
[2023-11-29 02:42:32,335 INFO  L78                 Accepts]: Start accepts. Automaton has 7808 states and 13032 transitions. Word has length 5065
[2023-11-29 02:42:32,337 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:42:32,337 INFO  L495      AbstractCegarLoop]: Abstraction has 7808 states and 13032 transitions.
[2023-11-29 02:42:32,339 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:32,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 7808 states and 13032 transitions.
[2023-11-29 02:42:32,656 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-11-29 02:42:32,656 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:42:32,659 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:42:32,732 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 02:42:32,860 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:42:32,860 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:42:32,862 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:42:32,864 INFO  L85        PathProgramCache]: Analyzing trace with hash -1480831848, now seen corresponding path program 1 times
[2023-11-29 02:42:32,864 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:42:32,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691496431]
[2023-11-29 02:42:32,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:32,865 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:42:33,365 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:42:33,366 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554187628]
[2023-11-29 02:42:33,367 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:33,367 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:42:33,367 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:42:33,368 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:42:33,372 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 02:42:40,680 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:42:40,850 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30625 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:42:40,925 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:42:41,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:42:41,206 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:42:41,206 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:42:41,206 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691496431]
[2023-11-29 02:42:41,206 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:42:41,207 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554187628]
[2023-11-29 02:42:41,207 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554187628] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:42:41,207 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:42:41,209 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:42:41,209 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972476907]
[2023-11-29 02:42:41,209 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:42:41,215 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:42:41,215 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:42:41,221 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:42:41,221 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:41,223 INFO  L87              Difference]: Start difference. First operand 7808 states and 13032 transitions. Second operand  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:41,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:42:41,414 INFO  L93              Difference]: Finished difference Result 14755 states and 24630 transitions.
[2023-11-29 02:42:41,415 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:42:41,416 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 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 5065
[2023-11-29 02:42:41,418 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:42:41,431 INFO  L225             Difference]: With dead ends: 14755
[2023-11-29 02:42:41,432 INFO  L226             Difference]: Without dead ends: 7817
[2023-11-29 02:42:41,441 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:41,442 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 12 mSDsluCounter, 23890 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35840 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:42:41,442 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35840 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:42:41,453 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7817 states.
[2023-11-29 02:42:41,547 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7817 to 7809.
[2023-11-29 02:42:41,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7809 states, 7808 states have (on average 1.6691854508196722) internal successors, (13033), 7808 states have internal predecessors, (13033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:41,568 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7809 states to 7809 states and 13033 transitions.
[2023-11-29 02:42:41,569 INFO  L78                 Accepts]: Start accepts. Automaton has 7809 states and 13033 transitions. Word has length 5065
[2023-11-29 02:42:41,570 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:42:41,571 INFO  L495      AbstractCegarLoop]: Abstraction has 7809 states and 13033 transitions.
[2023-11-29 02:42:41,572 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:41,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 7809 states and 13033 transitions.
[2023-11-29 02:42:41,714 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-11-29 02:42:41,714 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:42:41,717 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:42:41,789 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 02:42:41,917 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-29 02:42:41,918 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:42:41,918 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:42:41,919 INFO  L85        PathProgramCache]: Analyzing trace with hash -324162550, now seen corresponding path program 1 times
[2023-11-29 02:42:41,920 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:42:41,920 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148991066]
[2023-11-29 02:42:41,920 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:41,920 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:42:42,409 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:42:42,409 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445085018]
[2023-11-29 02:42:42,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:42,411 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:42:42,411 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:42:42,412 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:42:42,414 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 02:42:49,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:42:49,686 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30626 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:42:49,755 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:42:49,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:42:49,853 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:42:49,853 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:42:49,853 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148991066]
[2023-11-29 02:42:49,853 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:42:49,853 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445085018]
[2023-11-29 02:42:49,853 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445085018] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:42:49,853 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:42:49,855 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:42:49,855 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097349523]
[2023-11-29 02:42:49,855 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:42:49,859 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:42:49,859 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:42:49,863 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:42:49,863 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:49,864 INFO  L87              Difference]: Start difference. First operand 7809 states and 13033 transitions. Second operand  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:50,055 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:42:50,055 INFO  L93              Difference]: Finished difference Result 14757 states and 24632 transitions.
[2023-11-29 02:42:50,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:42:50,057 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 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 5065
[2023-11-29 02:42:50,059 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:42:50,071 INFO  L225             Difference]: With dead ends: 14757
[2023-11-29 02:42:50,071 INFO  L226             Difference]: Without dead ends: 7818
[2023-11-29 02:42:50,081 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:50,081 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 12 mSDsluCounter, 23890 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35840 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:42:50,082 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35840 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:42:50,093 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7818 states.
[2023-11-29 02:42:50,191 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7810.
[2023-11-29 02:42:50,200 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7810 states, 7809 states have (on average 1.6690997566909975) internal successors, (13034), 7809 states have internal predecessors, (13034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:50,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7810 states to 7810 states and 13034 transitions.
[2023-11-29 02:42:50,212 INFO  L78                 Accepts]: Start accepts. Automaton has 7810 states and 13034 transitions. Word has length 5065
[2023-11-29 02:42:50,214 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:42:50,214 INFO  L495      AbstractCegarLoop]: Abstraction has 7810 states and 13034 transitions.
[2023-11-29 02:42:50,216 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:50,216 INFO  L276                IsEmpty]: Start isEmpty. Operand 7810 states and 13034 transitions.
[2023-11-29 02:42:50,450 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-11-29 02:42:50,450 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:42:50,453 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:42:50,528 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 02:42:50,653 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-29 02:42:50,654 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:42:50,654 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:42:50,656 INFO  L85        PathProgramCache]: Analyzing trace with hash -1084151848, now seen corresponding path program 1 times
[2023-11-29 02:42:50,656 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:42:50,656 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214204168]
[2023-11-29 02:42:50,656 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:50,656 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:42:51,215 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:42:51,215 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535952882]
[2023-11-29 02:42:51,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:51,217 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:42:51,217 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:42:51,218 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:42:51,219 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 02:42:58,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:42:58,523 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30627 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:42:58,619 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:42:58,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:42:58,747 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:42:58,747 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:42:58,747 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214204168]
[2023-11-29 02:42:58,747 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:42:58,748 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535952882]
[2023-11-29 02:42:58,748 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535952882] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:42:58,748 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:42:58,749 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:42:58,750 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473638337]
[2023-11-29 02:42:58,750 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:42:58,757 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:42:58,757 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:42:58,762 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:42:58,762 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:58,764 INFO  L87              Difference]: Start difference. First operand 7810 states and 13034 transitions. Second operand  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:59,028 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:42:59,028 INFO  L93              Difference]: Finished difference Result 14759 states and 24634 transitions.
[2023-11-29 02:42:59,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:42:59,030 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 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 5065
[2023-11-29 02:42:59,032 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:42:59,039 INFO  L225             Difference]: With dead ends: 14759
[2023-11-29 02:42:59,039 INFO  L226             Difference]: Without dead ends: 7819
[2023-11-29 02:42:59,047 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:42:59,048 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 12 mSDsluCounter, 23890 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35840 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:42:59,048 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35840 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:42:59,058 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7819 states.
[2023-11-29 02:42:59,148 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7819 to 7811.
[2023-11-29 02:42:59,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7811 states, 7810 states have (on average 1.6690140845070423) internal successors, (13035), 7810 states have internal predecessors, (13035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:59,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7811 states to 7811 states and 13035 transitions.
[2023-11-29 02:42:59,168 INFO  L78                 Accepts]: Start accepts. Automaton has 7811 states and 13035 transitions. Word has length 5065
[2023-11-29 02:42:59,171 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:42:59,171 INFO  L495      AbstractCegarLoop]: Abstraction has 7811 states and 13035 transitions.
[2023-11-29 02:42:59,172 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:42:59,173 INFO  L276                IsEmpty]: Start isEmpty. Operand 7811 states and 13035 transitions.
[2023-11-29 02:42:59,349 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-11-29 02:42:59,349 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:42:59,353 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:42:59,428 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 02:42:59,553 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:42:59,554 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:42:59,554 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:42:59,556 INFO  L85        PathProgramCache]: Analyzing trace with hash -865662554, now seen corresponding path program 1 times
[2023-11-29 02:42:59,556 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:42:59,556 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677578451]
[2023-11-29 02:42:59,557 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:42:59,557 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:43:00,036 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:43:00,037 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680990272]
[2023-11-29 02:43:00,038 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:00,038 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:00,038 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:43:00,039 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:43:00,040 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 02:43:07,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:43:07,201 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30628 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:43:07,269 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:43:07,361 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:43:07,361 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:43:07,361 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:43:07,362 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677578451]
[2023-11-29 02:43:07,362 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:43:07,362 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680990272]
[2023-11-29 02:43:07,362 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [680990272] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:43:07,362 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:43:07,363 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:43:07,363 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304396812]
[2023-11-29 02:43:07,363 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:43:07,369 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:43:07,369 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:43:07,373 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:43:07,373 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:43:07,374 INFO  L87              Difference]: Start difference. First operand 7811 states and 13035 transitions. Second operand  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:07,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:43:07,553 INFO  L93              Difference]: Finished difference Result 14761 states and 24636 transitions.
[2023-11-29 02:43:07,554 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:43:07,555 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 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 5065
[2023-11-29 02:43:07,558 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:43:07,563 INFO  L225             Difference]: With dead ends: 14761
[2023-11-29 02:43:07,563 INFO  L226             Difference]: Without dead ends: 7820
[2023-11-29 02:43:07,568 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:43:07,569 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 12 mSDsluCounter, 23890 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35840 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 02:43:07,569 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35840 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 02:43:07,577 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7820 states.
[2023-11-29 02:43:07,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7820 to 7812.
[2023-11-29 02:43:07,660 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7812 states, 7811 states have (on average 1.6689284342593778) internal successors, (13036), 7811 states have internal predecessors, (13036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:07,672 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7812 states to 7812 states and 13036 transitions.
[2023-11-29 02:43:07,672 INFO  L78                 Accepts]: Start accepts. Automaton has 7812 states and 13036 transitions. Word has length 5065
[2023-11-29 02:43:07,675 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:43:07,675 INFO  L495      AbstractCegarLoop]: Abstraction has 7812 states and 13036 transitions.
[2023-11-29 02:43:07,677 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:07,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 7812 states and 13036 transitions.
[2023-11-29 02:43:07,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-11-29 02:43:07,948 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:43:07,951 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:43:08,036 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 02:43:08,156 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:08,157 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:43:08,157 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:43:08,159 INFO  L85        PathProgramCache]: Analyzing trace with hash -1487969640, now seen corresponding path program 1 times
[2023-11-29 02:43:08,159 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:43:08,159 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18519244]
[2023-11-29 02:43:08,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:08,160 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:43:08,613 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:43:08,614 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140128142]
[2023-11-29 02:43:08,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:08,615 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:08,615 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:43:08,615 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:43:08,616 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 02:43:15,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:43:15,773 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30629 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:43:15,839 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:43:15,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:43:15,948 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:43:15,948 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:43:15,948 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18519244]
[2023-11-29 02:43:15,949 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:43:15,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140128142]
[2023-11-29 02:43:15,949 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [140128142] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:43:15,949 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:43:15,950 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:43:15,950 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230291813]
[2023-11-29 02:43:15,950 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:43:15,954 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:43:15,954 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:43:15,958 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:43:15,958 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:43:15,959 INFO  L87              Difference]: Start difference. First operand 7812 states and 13036 transitions. Second operand  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:16,128 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:43:16,128 INFO  L93              Difference]: Finished difference Result 14763 states and 24638 transitions.
[2023-11-29 02:43:16,129 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:43:16,130 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 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 5065
[2023-11-29 02:43:16,134 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:43:16,139 INFO  L225             Difference]: With dead ends: 14763
[2023-11-29 02:43:16,139 INFO  L226             Difference]: Without dead ends: 7821
[2023-11-29 02:43:16,143 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:43:16,144 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 12 mSDsluCounter, 23890 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35840 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:43:16,144 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35840 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:43:16,155 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7821 states.
[2023-11-29 02:43:16,229 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7821 to 7813.
[2023-11-29 02:43:16,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7813 states, 7812 states have (on average 1.6688428059395801) internal successors, (13037), 7812 states have internal predecessors, (13037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:16,249 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7813 states to 7813 states and 13037 transitions.
[2023-11-29 02:43:16,249 INFO  L78                 Accepts]: Start accepts. Automaton has 7813 states and 13037 transitions. Word has length 5065
[2023-11-29 02:43:16,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:43:16,253 INFO  L495      AbstractCegarLoop]: Abstraction has 7813 states and 13037 transitions.
[2023-11-29 02:43:16,254 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:16,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 7813 states and 13037 transitions.
[2023-11-29 02:43:16,405 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-11-29 02:43:16,406 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:43:16,410 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:43:16,489 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 02:43:16,611 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 02:43:16,611 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:43:16,612 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:43:16,613 INFO  L85        PathProgramCache]: Analyzing trace with hash -564035702, now seen corresponding path program 1 times
[2023-11-29 02:43:16,613 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:43:16,613 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357939752]
[2023-11-29 02:43:16,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:16,614 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:43:17,152 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:43:17,152 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209126840]
[2023-11-29 02:43:17,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:17,154 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:17,154 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:43:17,155 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:43:17,155 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 02:43:24,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:43:24,515 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30630 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:43:24,584 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:43:24,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:43:24,679 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:43:24,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:43:24,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357939752]
[2023-11-29 02:43:24,679 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:43:24,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209126840]
[2023-11-29 02:43:24,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209126840] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:43:24,679 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:43:24,681 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:43:24,681 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781461110]
[2023-11-29 02:43:24,681 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:43:24,684 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:43:24,684 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:43:24,688 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:43:24,688 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:43:24,689 INFO  L87              Difference]: Start difference. First operand 7813 states and 13037 transitions. Second operand  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:24,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:43:24,847 INFO  L93              Difference]: Finished difference Result 14765 states and 24640 transitions.
[2023-11-29 02:43:24,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:43:24,849 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 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 5065
[2023-11-29 02:43:24,852 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:43:24,856 INFO  L225             Difference]: With dead ends: 14765
[2023-11-29 02:43:24,856 INFO  L226             Difference]: Without dead ends: 7822
[2023-11-29 02:43:24,860 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:43:24,861 INFO  L413           NwaCegarLoop]: 11950 mSDtfsCounter, 12 mSDsluCounter, 23890 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35840 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 02:43:24,861 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35840 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 02:43:24,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7822 states.
[2023-11-29 02:43:24,916 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 7814.
[2023-11-29 02:43:24,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7814 states, 7813 states have (on average 1.6687571995392294) internal successors, (13038), 7813 states have internal predecessors, (13038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:24,930 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 13038 transitions.
[2023-11-29 02:43:24,930 INFO  L78                 Accepts]: Start accepts. Automaton has 7814 states and 13038 transitions. Word has length 5065
[2023-11-29 02:43:24,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:43:24,933 INFO  L495      AbstractCegarLoop]: Abstraction has 7814 states and 13038 transitions.
[2023-11-29 02:43:24,934 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1266.25) internal successors, (5065), 4 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:24,934 INFO  L276                IsEmpty]: Start isEmpty. Operand 7814 states and 13038 transitions.
[2023-11-29 02:43:25,098 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-11-29 02:43:25,098 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:43:25,100 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:43:25,175 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-29 02:43:25,316 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 02:43:25,317 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:43:25,317 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:43:25,319 INFO  L85        PathProgramCache]: Analyzing trace with hash 892925564, now seen corresponding path program 1 times
[2023-11-29 02:43:25,319 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:43:25,319 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064834183]
[2023-11-29 02:43:25,320 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:25,320 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:43:25,794 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:43:25,794 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463838814]
[2023-11-29 02:43:25,795 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:25,795 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:25,796 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:43:25,796 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:43:25,797 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 02:43:32,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:43:32,971 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30631 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:43:33,224 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:43:33,553 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2023-11-29 02:43:33,553 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:43:33,553 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:43:33,553 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064834183]
[2023-11-29 02:43:33,554 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:43:33,554 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463838814]
[2023-11-29 02:43:33,554 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463838814] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:43:33,554 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:43:33,555 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:43:33,556 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253858329]
[2023-11-29 02:43:33,556 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:43:33,561 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:43:33,561 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:43:33,566 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:43:33,566 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:43:33,567 INFO  L87              Difference]: Start difference. First operand 7814 states and 13038 transitions. Second operand  has 7 states, 7 states have (on average 662.5714285714286) internal successors, (4638), 7 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:34,140 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:43:34,140 INFO  L93              Difference]: Finished difference Result 21699 states and 36212 transitions.
[2023-11-29 02:43:34,141 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:43:34,142 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 662.5714285714286) internal successors, (4638), 7 states have internal predecessors, (4638), 0 states have call successors, (0), 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 5065
[2023-11-29 02:43:34,146 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:43:34,156 INFO  L225             Difference]: With dead ends: 21699
[2023-11-29 02:43:34,157 INFO  L226             Difference]: Without dead ends: 14755
[2023-11-29 02:43:34,163 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5074 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:43:34,163 INFO  L413           NwaCegarLoop]: 13017 mSDtfsCounter, 33875 mSDsluCounter, 50983 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33875 SdHoareTripleChecker+Valid, 64000 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:43:34,163 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33875 Valid, 64000 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:43:34,177 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14755 states.
[2023-11-29 02:43:34,265 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14755 to 7814.
[2023-11-29 02:43:34,273 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7814 states, 7813 states have (on average 1.6687571995392294) internal successors, (13038), 7813 states have internal predecessors, (13038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:34,285 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 13038 transitions.
[2023-11-29 02:43:34,286 INFO  L78                 Accepts]: Start accepts. Automaton has 7814 states and 13038 transitions. Word has length 5065
[2023-11-29 02:43:34,290 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:43:34,290 INFO  L495      AbstractCegarLoop]: Abstraction has 7814 states and 13038 transitions.
[2023-11-29 02:43:34,291 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 662.5714285714286) internal successors, (4638), 7 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:34,291 INFO  L276                IsEmpty]: Start isEmpty. Operand 7814 states and 13038 transitions.
[2023-11-29 02:43:34,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5067
[2023-11-29 02:43:34,409 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:43:34,411 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:43:34,487 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 02:43:34,611 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 02:43:34,612 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:43:34,612 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:43:34,614 INFO  L85        PathProgramCache]: Analyzing trace with hash 1800185664, now seen corresponding path program 1 times
[2023-11-29 02:43:34,614 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:43:34,614 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492902128]
[2023-11-29 02:43:34,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:34,615 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:43:35,109 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:43:35,109 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109080480]
[2023-11-29 02:43:35,110 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:35,111 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:35,111 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:43:35,112 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:43:35,113 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 02:43:42,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:43:42,425 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30634 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:43:42,528 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:43:42,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked.
[2023-11-29 02:43:42,819 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:43:42,819 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:43:42,819 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492902128]
[2023-11-29 02:43:42,819 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:43:42,820 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109080480]
[2023-11-29 02:43:42,820 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109080480] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:43:42,820 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:43:42,821 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:43:42,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146488309]
[2023-11-29 02:43:42,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:43:42,825 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:43:42,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:43:42,829 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:43:42,829 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:43:42,830 INFO  L87              Difference]: Start difference. First operand 7814 states and 13038 transitions. Second operand  has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:43,298 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:43:43,298 INFO  L93              Difference]: Finished difference Result 21701 states and 36214 transitions.
[2023-11-29 02:43:43,298 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:43:43,300 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 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 5066
[2023-11-29 02:43:43,303 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:43:43,316 INFO  L225             Difference]: With dead ends: 21701
[2023-11-29 02:43:43,316 INFO  L226             Difference]: Without dead ends: 14754
[2023-11-29 02:43:43,322 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5075 GetRequests, 5063 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:43:43,322 INFO  L413           NwaCegarLoop]: 13012 mSDtfsCounter, 33874 mSDsluCounter, 50967 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33874 SdHoareTripleChecker+Valid, 63979 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:43:43,322 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33874 Valid, 63979 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:43:43,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14754 states.
[2023-11-29 02:43:43,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14754 to 7816.
[2023-11-29 02:43:43,435 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7816 states, 7815 states have (on average 1.6685860524632117) internal successors, (13040), 7815 states have internal predecessors, (13040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:43,443 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 13040 transitions.
[2023-11-29 02:43:43,443 INFO  L78                 Accepts]: Start accepts. Automaton has 7816 states and 13040 transitions. Word has length 5066
[2023-11-29 02:43:43,446 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:43:43,446 INFO  L495      AbstractCegarLoop]: Abstraction has 7816 states and 13040 transitions.
[2023-11-29 02:43:43,447 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:43,447 INFO  L276                IsEmpty]: Start isEmpty. Operand 7816 states and 13040 transitions.
[2023-11-29 02:43:43,606 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5068
[2023-11-29 02:43:43,606 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:43:43,608 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]
[2023-11-29 02:43:43,688 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 02:43:43,809 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 02:43:43,809 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:43:43,809 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:43:43,811 INFO  L85        PathProgramCache]: Analyzing trace with hash -227618922, now seen corresponding path program 1 times
[2023-11-29 02:43:43,811 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:43:43,811 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251167293]
[2023-11-29 02:43:43,812 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:43,812 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:43:44,290 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:43:44,290 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278283346]
[2023-11-29 02:43:44,291 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:44,291 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:44,292 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:43:44,292 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:43:44,293 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 02:43:51,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:43:51,564 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30637 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 02:43:51,641 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:43:51,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked.
[2023-11-29 02:43:51,880 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:43:51,881 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:43:51,881 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251167293]
[2023-11-29 02:43:51,881 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:43:51,881 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278283346]
[2023-11-29 02:43:51,881 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278283346] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:43:51,881 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:43:51,883 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:43:51,883 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796005171]
[2023-11-29 02:43:51,883 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:43:51,887 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:43:51,887 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:43:51,890 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:43:51,891 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:43:51,892 INFO  L87              Difference]: Start difference. First operand 7816 states and 13040 transitions. Second operand  has 8 states, 8 states have (on average 580.5) internal successors, (4644), 8 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:52,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:43:52,391 INFO  L93              Difference]: Finished difference Result 21707 states and 36220 transitions.
[2023-11-29 02:43:52,391 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:43:52,392 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 580.5) internal successors, (4644), 8 states have internal predecessors, (4644), 0 states have call successors, (0), 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 5067
[2023-11-29 02:43:52,396 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:43:52,408 INFO  L225             Difference]: With dead ends: 21707
[2023-11-29 02:43:52,408 INFO  L226             Difference]: Without dead ends: 14755
[2023-11-29 02:43:52,414 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5076 GetRequests, 5063 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 02:43:52,414 INFO  L413           NwaCegarLoop]: 13007 mSDtfsCounter, 33873 mSDsluCounter, 62511 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33873 SdHoareTripleChecker+Valid, 75518 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:43:52,414 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33873 Valid, 75518 Invalid, 54 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:43:52,427 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14755 states.
[2023-11-29 02:43:52,520 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14755 to 7818.
[2023-11-29 02:43:52,624 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7818 states, 7817 states have (on average 1.6684149929640526) internal successors, (13042), 7817 states have internal predecessors, (13042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:52,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7818 states to 7818 states and 13042 transitions.
[2023-11-29 02:43:52,635 INFO  L78                 Accepts]: Start accepts. Automaton has 7818 states and 13042 transitions. Word has length 5067
[2023-11-29 02:43:52,638 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:43:52,639 INFO  L495      AbstractCegarLoop]: Abstraction has 7818 states and 13042 transitions.
[2023-11-29 02:43:52,640 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 580.5) internal successors, (4644), 8 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:52,640 INFO  L276                IsEmpty]: Start isEmpty. Operand 7818 states and 13042 transitions.
[2023-11-29 02:43:52,774 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5069
[2023-11-29 02:43:52,774 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:43:52,776 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]
[2023-11-29 02:43:52,852 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 02:43:52,976 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 02:43:52,977 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:43:52,977 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:43:52,979 INFO  L85        PathProgramCache]: Analyzing trace with hash 1073738534, now seen corresponding path program 1 times
[2023-11-29 02:43:52,979 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:43:52,979 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571688514]
[2023-11-29 02:43:52,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:52,979 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:43:53,427 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:43:53,427 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307558609]
[2023-11-29 02:43:53,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:53,428 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:53,428 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:43:53,429 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:43:53,430 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 02:44:00,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:44:00,834 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30640 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:44:00,907 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:44:01,132 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked.
[2023-11-29 02:44:01,132 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:44:01,132 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:44:01,132 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571688514]
[2023-11-29 02:44:01,132 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:44:01,132 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307558609]
[2023-11-29 02:44:01,132 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307558609] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:44:01,132 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:44:01,134 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:44:01,134 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251071490]
[2023-11-29 02:44:01,135 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:44:01,139 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:44:01,139 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:44:01,143 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:44:01,143 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:44:01,144 INFO  L87              Difference]: Start difference. First operand 7818 states and 13042 transitions. Second operand  has 7 states, 7 states have (on average 663.8571428571429) internal successors, (4647), 7 states have internal predecessors, (4647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:01,684 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:44:01,684 INFO  L93              Difference]: Finished difference Result 21713 states and 36226 transitions.
[2023-11-29 02:44:01,684 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:44:01,685 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 663.8571428571429) internal successors, (4647), 7 states have internal predecessors, (4647), 0 states have call successors, (0), 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 5068
[2023-11-29 02:44:01,688 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:44:01,700 INFO  L225             Difference]: With dead ends: 21713
[2023-11-29 02:44:01,700 INFO  L226             Difference]: Without dead ends: 14756
[2023-11-29 02:44:01,704 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5077 GetRequests, 5065 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:44:01,705 INFO  L413           NwaCegarLoop]: 13002 mSDtfsCounter, 33872 mSDsluCounter, 50937 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33872 SdHoareTripleChecker+Valid, 63939 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:44:01,705 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33872 Valid, 63939 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:44:01,717 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14756 states.
[2023-11-29 02:44:01,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14756 to 7820.
[2023-11-29 02:44:01,790 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7820 states, 7819 states have (on average 1.6682440209745493) internal successors, (13044), 7819 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:01,798 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7820 states to 7820 states and 13044 transitions.
[2023-11-29 02:44:01,798 INFO  L78                 Accepts]: Start accepts. Automaton has 7820 states and 13044 transitions. Word has length 5068
[2023-11-29 02:44:01,801 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:44:01,801 INFO  L495      AbstractCegarLoop]: Abstraction has 7820 states and 13044 transitions.
[2023-11-29 02:44:01,802 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 663.8571428571429) internal successors, (4647), 7 states have internal predecessors, (4647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:01,802 INFO  L276                IsEmpty]: Start isEmpty. Operand 7820 states and 13044 transitions.
[2023-11-29 02:44:01,907 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5070
[2023-11-29 02:44:01,907 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:44:01,909 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 02:44:01,990 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 02:44:02,109 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 02:44:02,110 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:44:02,110 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:44:02,111 INFO  L85        PathProgramCache]: Analyzing trace with hash 1851222578, now seen corresponding path program 1 times
[2023-11-29 02:44:02,111 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:44:02,111 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646031087]
[2023-11-29 02:44:02,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:02,111 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:44:02,593 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:44:02,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926355273]
[2023-11-29 02:44:02,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:02,594 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:44:02,594 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:44:02,595 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:44:02,596 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 02:44:09,688 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:44:09,868 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30644 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:44:09,933 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:44:10,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2023-11-29 02:44:10,161 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:44:10,161 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:44:10,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646031087]
[2023-11-29 02:44:10,161 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:44:10,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926355273]
[2023-11-29 02:44:10,162 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926355273] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:44:10,162 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:44:10,163 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:44:10,163 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720209664]
[2023-11-29 02:44:10,164 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:44:10,166 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:44:10,166 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:44:10,169 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:44:10,169 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:44:10,170 INFO  L87              Difference]: Start difference. First operand 7820 states and 13044 transitions. Second operand  has 7 states, 7 states have (on average 664.2857142857143) internal successors, (4650), 7 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:10,602 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:44:10,603 INFO  L93              Difference]: Finished difference Result 21719 states and 36232 transitions.
[2023-11-29 02:44:10,603 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:44:10,604 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 664.2857142857143) internal successors, (4650), 7 states have internal predecessors, (4650), 0 states have call successors, (0), 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 5069
[2023-11-29 02:44:10,607 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:44:10,619 INFO  L225             Difference]: With dead ends: 21719
[2023-11-29 02:44:10,619 INFO  L226             Difference]: Without dead ends: 14757
[2023-11-29 02:44:10,625 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5078 GetRequests, 5066 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:44:10,625 INFO  L413           NwaCegarLoop]: 12997 mSDtfsCounter, 33871 mSDsluCounter, 50922 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33871 SdHoareTripleChecker+Valid, 63919 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:44:10,626 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33871 Valid, 63919 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:44:10,638 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14757 states.
[2023-11-29 02:44:10,839 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14757 to 7822.
[2023-11-29 02:44:10,844 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7822 states, 7821 states have (on average 1.6680731364275667) internal successors, (13046), 7821 states have internal predecessors, (13046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:10,852 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 13046 transitions.
[2023-11-29 02:44:10,852 INFO  L78                 Accepts]: Start accepts. Automaton has 7822 states and 13046 transitions. Word has length 5069
[2023-11-29 02:44:10,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:44:10,855 INFO  L495      AbstractCegarLoop]: Abstraction has 7822 states and 13046 transitions.
[2023-11-29 02:44:10,856 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 664.2857142857143) internal successors, (4650), 7 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:10,856 INFO  L276                IsEmpty]: Start isEmpty. Operand 7822 states and 13046 transitions.
[2023-11-29 02:44:10,986 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5071
[2023-11-29 02:44:10,986 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:44:10,987 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:44:11,062 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 02:44:11,188 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 02:44:11,188 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:44:11,188 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:44:11,189 INFO  L85        PathProgramCache]: Analyzing trace with hash -254708594, now seen corresponding path program 1 times
[2023-11-29 02:44:11,189 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:44:11,189 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642059869]
[2023-11-29 02:44:11,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:11,190 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:44:11,636 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:44:11,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131812619]
[2023-11-29 02:44:11,637 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:11,637 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:44:11,637 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:44:11,638 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:44:11,639 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 02:44:18,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:44:18,993 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30647 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 02:44:19,064 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:44:19,343 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked.
[2023-11-29 02:44:19,343 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:44:19,343 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:44:19,343 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642059869]
[2023-11-29 02:44:19,343 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:44:19,343 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131812619]
[2023-11-29 02:44:19,344 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [131812619] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:44:19,344 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:44:19,345 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:44:19,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151730938]
[2023-11-29 02:44:19,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:44:19,348 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:44:19,349 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:44:19,351 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:44:19,352 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:44:19,353 INFO  L87              Difference]: Start difference. First operand 7822 states and 13046 transitions. Second operand  has 8 states, 8 states have (on average 581.625) internal successors, (4653), 8 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:19,876 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:44:19,876 INFO  L93              Difference]: Finished difference Result 21725 states and 36238 transitions.
[2023-11-29 02:44:19,877 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:44:19,878 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 581.625) internal successors, (4653), 8 states have internal predecessors, (4653), 0 states have call successors, (0), 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 5070
[2023-11-29 02:44:19,882 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:44:19,899 INFO  L225             Difference]: With dead ends: 21725
[2023-11-29 02:44:19,899 INFO  L226             Difference]: Without dead ends: 14758
[2023-11-29 02:44:19,907 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5079 GetRequests, 5066 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 02:44:19,908 INFO  L413           NwaCegarLoop]: 12992 mSDtfsCounter, 33870 mSDsluCounter, 63896 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33870 SdHoareTripleChecker+Valid, 76888 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:44:19,908 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33870 Valid, 76888 Invalid, 59 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:44:19,925 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14758 states.
[2023-11-29 02:44:20,140 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14758 to 7824.
[2023-11-29 02:44:20,146 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7824 states, 7823 states have (on average 1.66790233925604) internal successors, (13048), 7823 states have internal predecessors, (13048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:20,154 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7824 states to 7824 states and 13048 transitions.
[2023-11-29 02:44:20,154 INFO  L78                 Accepts]: Start accepts. Automaton has 7824 states and 13048 transitions. Word has length 5070
[2023-11-29 02:44:20,157 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:44:20,157 INFO  L495      AbstractCegarLoop]: Abstraction has 7824 states and 13048 transitions.
[2023-11-29 02:44:20,157 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 581.625) internal successors, (4653), 8 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:20,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 7824 states and 13048 transitions.
[2023-11-29 02:44:20,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5072
[2023-11-29 02:44:20,262 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:44:20,263 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 02:44:20,342 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 02:44:20,463 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 02:44:20,463 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:44:20,464 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:44:20,464 INFO  L85        PathProgramCache]: Analyzing trace with hash 1368022860, now seen corresponding path program 1 times
[2023-11-29 02:44:20,464 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:44:20,465 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50494382]
[2023-11-29 02:44:20,465 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:20,465 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:44:20,911 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:44:20,911 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042015381]
[2023-11-29 02:44:20,912 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:20,912 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:44:20,913 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:44:20,913 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:44:20,914 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 02:44:27,987 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:44:28,167 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30650 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:44:28,233 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:44:28,453 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked.
[2023-11-29 02:44:28,453 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:44:28,453 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:44:28,454 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50494382]
[2023-11-29 02:44:28,454 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:44:28,454 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042015381]
[2023-11-29 02:44:28,454 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042015381] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:44:28,454 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:44:28,455 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:44:28,455 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258959620]
[2023-11-29 02:44:28,455 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:44:28,457 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:44:28,457 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:44:28,460 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:44:28,460 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:44:28,461 INFO  L87              Difference]: Start difference. First operand 7824 states and 13048 transitions. Second operand  has 7 states, 7 states have (on average 665.1428571428571) internal successors, (4656), 7 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:28,893 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:44:28,893 INFO  L93              Difference]: Finished difference Result 21731 states and 36244 transitions.
[2023-11-29 02:44:28,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:44:28,895 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 665.1428571428571) internal successors, (4656), 7 states have internal predecessors, (4656), 0 states have call successors, (0), 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 5071
[2023-11-29 02:44:28,898 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:44:28,917 INFO  L225             Difference]: With dead ends: 21731
[2023-11-29 02:44:28,917 INFO  L226             Difference]: Without dead ends: 14759
[2023-11-29 02:44:28,922 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5080 GetRequests, 5068 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:44:28,923 INFO  L413           NwaCegarLoop]: 12987 mSDtfsCounter, 33869 mSDsluCounter, 50892 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33869 SdHoareTripleChecker+Valid, 63879 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:44:28,923 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33869 Valid, 63879 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:44:28,936 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14759 states.
[2023-11-29 02:44:29,126 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14759 to 7826.
[2023-11-29 02:44:29,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7826 states, 7825 states have (on average 1.6677316293929711) internal successors, (13050), 7825 states have internal predecessors, (13050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:29,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7826 states to 7826 states and 13050 transitions.
[2023-11-29 02:44:29,145 INFO  L78                 Accepts]: Start accepts. Automaton has 7826 states and 13050 transitions. Word has length 5071
[2023-11-29 02:44:29,149 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:44:29,149 INFO  L495      AbstractCegarLoop]: Abstraction has 7826 states and 13050 transitions.
[2023-11-29 02:44:29,150 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 665.1428571428571) internal successors, (4656), 7 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:29,150 INFO  L276                IsEmpty]: Start isEmpty. Operand 7826 states and 13050 transitions.
[2023-11-29 02:44:29,256 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5073
[2023-11-29 02:44:29,256 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:44:29,257 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]
[2023-11-29 02:44:29,334 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-11-29 02:44:29,457 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 02:44:29,458 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:44:29,458 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:44:29,460 INFO  L85        PathProgramCache]: Analyzing trace with hash 1870038132, now seen corresponding path program 1 times
[2023-11-29 02:44:29,460 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:44:29,460 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788420880]
[2023-11-29 02:44:29,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:29,461 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:44:29,905 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:44:29,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665277253]
[2023-11-29 02:44:29,906 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:29,906 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:44:29,906 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:44:29,907 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:44:29,907 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 02:44:36,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:44:37,162 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30653 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:44:37,235 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:44:37,493 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked.
[2023-11-29 02:44:37,493 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:44:37,493 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:44:37,493 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788420880]
[2023-11-29 02:44:37,493 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:44:37,493 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665277253]
[2023-11-29 02:44:37,494 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665277253] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:44:37,494 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:44:37,495 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:44:37,495 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448448642]
[2023-11-29 02:44:37,496 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:44:37,498 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:44:37,498 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:44:37,500 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:44:37,501 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:44:37,502 INFO  L87              Difference]: Start difference. First operand 7826 states and 13050 transitions. Second operand  has 7 states, 7 states have (on average 665.5714285714286) internal successors, (4659), 7 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:37,940 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:44:37,941 INFO  L93              Difference]: Finished difference Result 21737 states and 36250 transitions.
[2023-11-29 02:44:37,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:44:37,942 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 665.5714285714286) internal successors, (4659), 7 states have internal predecessors, (4659), 0 states have call successors, (0), 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 5072
[2023-11-29 02:44:37,946 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:44:37,956 INFO  L225             Difference]: With dead ends: 21737
[2023-11-29 02:44:37,956 INFO  L226             Difference]: Without dead ends: 14760
[2023-11-29 02:44:37,961 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5081 GetRequests, 5069 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:44:37,961 INFO  L413           NwaCegarLoop]: 12982 mSDtfsCounter, 33868 mSDsluCounter, 50877 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33868 SdHoareTripleChecker+Valid, 63859 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:44:37,962 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33868 Valid, 63859 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:44:37,973 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14760 states.
[2023-11-29 02:44:38,039 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14760 to 7828.
[2023-11-29 02:44:38,045 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7828 states, 7827 states have (on average 1.6675610067714322) internal successors, (13052), 7827 states have internal predecessors, (13052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:38,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7828 states to 7828 states and 13052 transitions.
[2023-11-29 02:44:38,052 INFO  L78                 Accepts]: Start accepts. Automaton has 7828 states and 13052 transitions. Word has length 5072
[2023-11-29 02:44:38,055 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:44:38,055 INFO  L495      AbstractCegarLoop]: Abstraction has 7828 states and 13052 transitions.
[2023-11-29 02:44:38,056 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 665.5714285714286) internal successors, (4659), 7 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:38,056 INFO  L276                IsEmpty]: Start isEmpty. Operand 7828 states and 13052 transitions.
[2023-11-29 02:44:38,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5074
[2023-11-29 02:44:38,276 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:44:38,277 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:44:38,352 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 02:44:38,477 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:44:38,478 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:44:38,478 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:44:38,479 INFO  L85        PathProgramCache]: Analyzing trace with hash 598680296, now seen corresponding path program 1 times
[2023-11-29 02:44:38,479 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:44:38,479 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375411284]
[2023-11-29 02:44:38,479 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:38,479 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:44:38,925 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:44:38,925 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897545225]
[2023-11-29 02:44:38,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:38,926 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:44:38,926 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:44:38,927 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:44:38,929 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 02:44:46,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:44:46,252 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30657 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:44:46,320 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:44:46,550 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked.
[2023-11-29 02:44:46,551 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:44:46,551 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:44:46,551 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375411284]
[2023-11-29 02:44:46,551 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:44:46,551 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897545225]
[2023-11-29 02:44:46,551 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [897545225] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:44:46,551 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:44:46,553 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:44:46,553 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926419033]
[2023-11-29 02:44:46,553 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:44:46,555 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:44:46,555 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:44:46,557 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:44:46,557 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:44:46,559 INFO  L87              Difference]: Start difference. First operand 7828 states and 13052 transitions. Second operand  has 7 states, 7 states have (on average 666.0) internal successors, (4662), 7 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:47,006 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:44:47,006 INFO  L93              Difference]: Finished difference Result 21743 states and 36256 transitions.
[2023-11-29 02:44:47,007 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:44:47,008 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 666.0) internal successors, (4662), 7 states have internal predecessors, (4662), 0 states have call successors, (0), 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 5073
[2023-11-29 02:44:47,012 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:44:47,022 INFO  L225             Difference]: With dead ends: 21743
[2023-11-29 02:44:47,022 INFO  L226             Difference]: Without dead ends: 14761
[2023-11-29 02:44:47,028 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5082 GetRequests, 5070 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:44:47,028 INFO  L413           NwaCegarLoop]: 12977 mSDtfsCounter, 33867 mSDsluCounter, 50862 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33867 SdHoareTripleChecker+Valid, 63839 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:44:47,029 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33867 Valid, 63839 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:44:47,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14761 states.
[2023-11-29 02:44:47,107 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14761 to 7830.
[2023-11-29 02:44:47,113 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7830 states, 7829 states have (on average 1.6673904713245624) internal successors, (13054), 7829 states have internal predecessors, (13054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:47,120 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7830 states to 7830 states and 13054 transitions.
[2023-11-29 02:44:47,121 INFO  L78                 Accepts]: Start accepts. Automaton has 7830 states and 13054 transitions. Word has length 5073
[2023-11-29 02:44:47,123 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:44:47,123 INFO  L495      AbstractCegarLoop]: Abstraction has 7830 states and 13054 transitions.
[2023-11-29 02:44:47,124 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 666.0) internal successors, (4662), 7 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:47,124 INFO  L276                IsEmpty]: Start isEmpty. Operand 7830 states and 13054 transitions.
[2023-11-29 02:44:47,228 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5075
[2023-11-29 02:44:47,228 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:44:47,229 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]
[2023-11-29 02:44:47,304 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 02:44:47,430 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:44:47,430 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:44:47,430 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:44:47,432 INFO  L85        PathProgramCache]: Analyzing trace with hash -1590405412, now seen corresponding path program 1 times
[2023-11-29 02:44:47,432 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:44:47,432 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728716210]
[2023-11-29 02:44:47,433 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:47,433 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:44:47,878 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:44:47,879 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77113261]
[2023-11-29 02:44:47,879 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:47,880 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:44:47,880 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:44:47,880 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:44:47,881 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 02:44:55,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:44:55,239 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30660 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:44:55,304 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:44:55,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked.
[2023-11-29 02:44:55,521 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:44:55,521 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:44:55,521 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728716210]
[2023-11-29 02:44:55,522 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:44:55,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77113261]
[2023-11-29 02:44:55,522 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [77113261] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:44:55,522 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:44:55,523 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:44:55,523 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521566113]
[2023-11-29 02:44:55,523 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:44:55,525 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:44:55,525 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:44:55,528 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:44:55,528 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:44:55,529 INFO  L87              Difference]: Start difference. First operand 7830 states and 13054 transitions. Second operand  has 7 states, 7 states have (on average 666.4285714285714) internal successors, (4665), 7 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:55,973 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:44:55,974 INFO  L93              Difference]: Finished difference Result 21749 states and 36262 transitions.
[2023-11-29 02:44:55,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:44:55,975 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 666.4285714285714) internal successors, (4665), 7 states have internal predecessors, (4665), 0 states have call successors, (0), 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 5074
[2023-11-29 02:44:55,979 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:44:55,989 INFO  L225             Difference]: With dead ends: 21749
[2023-11-29 02:44:55,989 INFO  L226             Difference]: Without dead ends: 14762
[2023-11-29 02:44:55,994 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5083 GetRequests, 5071 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:44:55,995 INFO  L413           NwaCegarLoop]: 12972 mSDtfsCounter, 33866 mSDsluCounter, 50847 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33866 SdHoareTripleChecker+Valid, 63819 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:44:55,995 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33866 Valid, 63819 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:44:56,007 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14762 states.
[2023-11-29 02:44:56,075 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14762 to 7832.
[2023-11-29 02:44:56,082 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7832 states, 7831 states have (on average 1.6672200229855703) internal successors, (13056), 7831 states have internal predecessors, (13056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:56,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7832 states to 7832 states and 13056 transitions.
[2023-11-29 02:44:56,089 INFO  L78                 Accepts]: Start accepts. Automaton has 7832 states and 13056 transitions. Word has length 5074
[2023-11-29 02:44:56,092 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:44:56,092 INFO  L495      AbstractCegarLoop]: Abstraction has 7832 states and 13056 transitions.
[2023-11-29 02:44:56,093 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 666.4285714285714) internal successors, (4665), 7 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:44:56,093 INFO  L276                IsEmpty]: Start isEmpty. Operand 7832 states and 13056 transitions.
[2023-11-29 02:44:56,197 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5076
[2023-11-29 02:44:56,197 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:44:56,198 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:44:56,274 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 02:44:56,399 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2023-11-29 02:44:56,399 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:44:56,399 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:44:56,400 INFO  L85        PathProgramCache]: Analyzing trace with hash 14922754, now seen corresponding path program 1 times
[2023-11-29 02:44:56,400 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:44:56,400 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911177877]
[2023-11-29 02:44:56,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:56,401 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:44:56,848 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:44:56,848 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648350324]
[2023-11-29 02:44:56,849 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:44:56,849 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:44:56,849 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:44:56,850 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:44:56,851 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 02:45:03,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:45:03,998 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30663 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 02:45:04,061 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:45:04,315 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked.
[2023-11-29 02:45:04,315 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:45:04,315 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:45:04,315 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911177877]
[2023-11-29 02:45:04,315 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:45:04,315 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648350324]
[2023-11-29 02:45:04,316 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648350324] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:45:04,316 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:45:04,317 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:45:04,318 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339293724]
[2023-11-29 02:45:04,318 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:45:04,320 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:45:04,320 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:45:04,322 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:45:04,322 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:45:04,324 INFO  L87              Difference]: Start difference. First operand 7832 states and 13056 transitions. Second operand  has 8 states, 8 states have (on average 583.5) internal successors, (4668), 8 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:04,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:45:04,811 INFO  L93              Difference]: Finished difference Result 21755 states and 36268 transitions.
[2023-11-29 02:45:04,811 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:45:04,812 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 583.5) internal successors, (4668), 8 states have internal predecessors, (4668), 0 states have call successors, (0), 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 5075
[2023-11-29 02:45:04,816 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:45:04,826 INFO  L225             Difference]: With dead ends: 21755
[2023-11-29 02:45:04,826 INFO  L226             Difference]: Without dead ends: 14763
[2023-11-29 02:45:04,831 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5084 GetRequests, 5071 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 02:45:04,831 INFO  L413           NwaCegarLoop]: 12967 mSDtfsCounter, 33865 mSDsluCounter, 62367 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33865 SdHoareTripleChecker+Valid, 75334 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:45:04,832 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33865 Valid, 75334 Invalid, 54 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:45:04,844 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14763 states.
[2023-11-29 02:45:04,909 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14763 to 7834.
[2023-11-29 02:45:04,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7834 states, 7833 states have (on average 1.6670496616877315) internal successors, (13058), 7833 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:04,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 13058 transitions.
[2023-11-29 02:45:04,923 INFO  L78                 Accepts]: Start accepts. Automaton has 7834 states and 13058 transitions. Word has length 5075
[2023-11-29 02:45:04,925 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:45:04,926 INFO  L495      AbstractCegarLoop]: Abstraction has 7834 states and 13058 transitions.
[2023-11-29 02:45:04,926 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 583.5) internal successors, (4668), 8 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:04,927 INFO  L276                IsEmpty]: Start isEmpty. Operand 7834 states and 13058 transitions.
[2023-11-29 02:45:05,031 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5077
[2023-11-29 02:45:05,031 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:45:05,032 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]
[2023-11-29 02:45:05,118 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 02:45:05,233 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:05,233 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:45:05,233 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:45:05,234 INFO  L85        PathProgramCache]: Analyzing trace with hash -2142852414, now seen corresponding path program 1 times
[2023-11-29 02:45:05,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:45:05,234 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603869243]
[2023-11-29 02:45:05,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:05,236 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:45:05,679 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:45:05,679 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338804654]
[2023-11-29 02:45:05,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:05,680 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:05,796 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:45:05,797 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:45:05,798 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 02:45:12,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:45:13,065 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30666 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:45:13,132 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:45:13,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked.
[2023-11-29 02:45:13,349 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:45:13,349 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:45:13,350 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603869243]
[2023-11-29 02:45:13,350 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:45:13,350 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338804654]
[2023-11-29 02:45:13,350 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [338804654] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:45:13,350 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:45:13,351 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:45:13,352 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134224643]
[2023-11-29 02:45:13,352 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:45:13,355 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:45:13,355 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:45:13,359 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:45:13,359 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:45:13,360 INFO  L87              Difference]: Start difference. First operand 7834 states and 13058 transitions. Second operand  has 7 states, 7 states have (on average 667.2857142857143) internal successors, (4671), 7 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:13,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:45:13,803 INFO  L93              Difference]: Finished difference Result 21761 states and 36274 transitions.
[2023-11-29 02:45:13,804 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:45:13,805 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 667.2857142857143) internal successors, (4671), 7 states have internal predecessors, (4671), 0 states have call successors, (0), 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 5076
[2023-11-29 02:45:13,808 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:45:13,818 INFO  L225             Difference]: With dead ends: 21761
[2023-11-29 02:45:13,818 INFO  L226             Difference]: Without dead ends: 14764
[2023-11-29 02:45:13,823 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5085 GetRequests, 5073 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:45:13,824 INFO  L413           NwaCegarLoop]: 12962 mSDtfsCounter, 33864 mSDsluCounter, 50817 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33864 SdHoareTripleChecker+Valid, 63779 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:45:13,824 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33864 Valid, 63779 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:45:13,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14764 states.
[2023-11-29 02:45:13,901 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14764 to 7836.
[2023-11-29 02:45:13,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7836 states, 7835 states have (on average 1.6668793873643906) internal successors, (13060), 7835 states have internal predecessors, (13060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:13,915 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 13060 transitions.
[2023-11-29 02:45:13,915 INFO  L78                 Accepts]: Start accepts. Automaton has 7836 states and 13060 transitions. Word has length 5076
[2023-11-29 02:45:13,917 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:45:13,917 INFO  L495      AbstractCegarLoop]: Abstraction has 7836 states and 13060 transitions.
[2023-11-29 02:45:13,918 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 667.2857142857143) internal successors, (4671), 7 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:13,918 INFO  L276                IsEmpty]: Start isEmpty. Operand 7836 states and 13060 transitions.
[2023-11-29 02:45:14,024 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5078
[2023-11-29 02:45:14,024 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:45:14,025 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]
[2023-11-29 02:45:14,099 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 02:45:14,225 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:14,226 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:45:14,226 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:45:14,227 INFO  L85        PathProgramCache]: Analyzing trace with hash -998399842, now seen corresponding path program 1 times
[2023-11-29 02:45:14,227 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:45:14,228 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434508181]
[2023-11-29 02:45:14,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:14,229 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:45:14,701 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:45:14,702 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618988281]
[2023-11-29 02:45:14,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:14,703 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:14,703 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:45:14,703 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:45:14,704 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 02:45:21,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:45:21,816 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30670 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:45:21,884 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:45:22,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked.
[2023-11-29 02:45:22,110 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:45:22,110 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:45:22,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434508181]
[2023-11-29 02:45:22,110 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:45:22,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618988281]
[2023-11-29 02:45:22,110 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618988281] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:45:22,110 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:45:22,112 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:45:22,112 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791402432]
[2023-11-29 02:45:22,112 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:45:22,114 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:45:22,114 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:45:22,117 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:45:22,117 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:45:22,118 INFO  L87              Difference]: Start difference. First operand 7836 states and 13060 transitions. Second operand  has 7 states, 7 states have (on average 667.7142857142857) internal successors, (4674), 7 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:22,554 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:45:22,554 INFO  L93              Difference]: Finished difference Result 21767 states and 36280 transitions.
[2023-11-29 02:45:22,554 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:45:22,556 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 667.7142857142857) internal successors, (4674), 7 states have internal predecessors, (4674), 0 states have call successors, (0), 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 5077
[2023-11-29 02:45:22,559 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:45:22,569 INFO  L225             Difference]: With dead ends: 21767
[2023-11-29 02:45:22,569 INFO  L226             Difference]: Without dead ends: 14765
[2023-11-29 02:45:22,575 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5086 GetRequests, 5074 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:45:22,575 INFO  L413           NwaCegarLoop]: 12957 mSDtfsCounter, 33863 mSDsluCounter, 50802 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33863 SdHoareTripleChecker+Valid, 63759 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:45:22,575 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33863 Valid, 63759 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:45:22,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14765 states.
[2023-11-29 02:45:22,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14765 to 7838.
[2023-11-29 02:45:22,658 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7838 states, 7837 states have (on average 1.66670919994896) internal successors, (13062), 7837 states have internal predecessors, (13062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:22,665 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7838 states to 7838 states and 13062 transitions.
[2023-11-29 02:45:22,665 INFO  L78                 Accepts]: Start accepts. Automaton has 7838 states and 13062 transitions. Word has length 5077
[2023-11-29 02:45:22,668 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:45:22,668 INFO  L495      AbstractCegarLoop]: Abstraction has 7838 states and 13062 transitions.
[2023-11-29 02:45:22,669 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 667.7142857142857) internal successors, (4674), 7 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:22,669 INFO  L276                IsEmpty]: Start isEmpty. Operand 7838 states and 13062 transitions.
[2023-11-29 02:45:22,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5079
[2023-11-29 02:45:22,775 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:45:22,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:45:22,856 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 02:45:22,977 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2023-11-29 02:45:22,977 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:45:22,978 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:45:22,979 INFO  L85        PathProgramCache]: Analyzing trace with hash -1298084310, now seen corresponding path program 1 times
[2023-11-29 02:45:22,979 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:45:22,979 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738575574]
[2023-11-29 02:45:22,980 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:22,980 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:45:23,421 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:45:23,422 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874064786]
[2023-11-29 02:45:23,423 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:23,423 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:23,423 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:45:23,424 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:45:23,424 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 02:45:30,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:45:30,875 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30673 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:45:30,942 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:45:31,165 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked.
[2023-11-29 02:45:31,165 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:45:31,166 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:45:31,166 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738575574]
[2023-11-29 02:45:31,166 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:45:31,166 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874064786]
[2023-11-29 02:45:31,166 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874064786] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:45:31,166 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:45:31,168 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:45:31,168 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184644278]
[2023-11-29 02:45:31,168 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:45:31,171 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:45:31,171 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:45:31,175 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:45:31,175 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:45:31,176 INFO  L87              Difference]: Start difference. First operand 7838 states and 13062 transitions. Second operand  has 7 states, 7 states have (on average 668.1428571428571) internal successors, (4677), 7 states have internal predecessors, (4677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:31,620 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:45:31,620 INFO  L93              Difference]: Finished difference Result 21773 states and 36286 transitions.
[2023-11-29 02:45:31,620 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:45:31,621 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 668.1428571428571) internal successors, (4677), 7 states have internal predecessors, (4677), 0 states have call successors, (0), 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 5078
[2023-11-29 02:45:31,625 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:45:31,635 INFO  L225             Difference]: With dead ends: 21773
[2023-11-29 02:45:31,635 INFO  L226             Difference]: Without dead ends: 14766
[2023-11-29 02:45:31,641 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5087 GetRequests, 5075 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:45:31,641 INFO  L413           NwaCegarLoop]: 12952 mSDtfsCounter, 33862 mSDsluCounter, 50787 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33862 SdHoareTripleChecker+Valid, 63739 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:45:31,641 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33862 Valid, 63739 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:45:31,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14766 states.
[2023-11-29 02:45:31,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14766 to 7840.
[2023-11-29 02:45:31,728 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7840 states, 7839 states have (on average 1.6665390993749203) internal successors, (13064), 7839 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:31,735 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 13064 transitions.
[2023-11-29 02:45:31,735 INFO  L78                 Accepts]: Start accepts. Automaton has 7840 states and 13064 transitions. Word has length 5078
[2023-11-29 02:45:31,738 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:45:31,738 INFO  L495      AbstractCegarLoop]: Abstraction has 7840 states and 13064 transitions.
[2023-11-29 02:45:31,739 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 668.1428571428571) internal successors, (4677), 7 states have internal predecessors, (4677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:31,739 INFO  L276                IsEmpty]: Start isEmpty. Operand 7840 states and 13064 transitions.
[2023-11-29 02:45:31,843 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5080
[2023-11-29 02:45:31,843 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:45:31,844 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:45:31,923 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 02:45:32,045 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-29 02:45:32,045 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:45:32,045 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:45:32,046 INFO  L85        PathProgramCache]: Analyzing trace with hash 28855736, now seen corresponding path program 1 times
[2023-11-29 02:45:32,046 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:45:32,046 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750311051]
[2023-11-29 02:45:32,047 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:32,047 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:45:32,490 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:45:32,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499268008]
[2023-11-29 02:45:32,491 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:32,491 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:32,491 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:45:32,492 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:45:32,493 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 02:45:39,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:45:39,680 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30676 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:45:39,747 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:45:39,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked.
[2023-11-29 02:45:39,968 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:45:39,969 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:45:39,969 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750311051]
[2023-11-29 02:45:39,969 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:45:39,969 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499268008]
[2023-11-29 02:45:39,969 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [499268008] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:45:39,969 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:45:39,971 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:45:39,971 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508056918]
[2023-11-29 02:45:39,971 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:45:39,973 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:45:39,974 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:45:39,976 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:45:39,976 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:45:39,977 INFO  L87              Difference]: Start difference. First operand 7840 states and 13064 transitions. Second operand  has 7 states, 7 states have (on average 668.5714285714286) internal successors, (4680), 7 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:40,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:45:40,418 INFO  L93              Difference]: Finished difference Result 21779 states and 36292 transitions.
[2023-11-29 02:45:40,419 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:45:40,420 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 668.5714285714286) internal successors, (4680), 7 states have internal predecessors, (4680), 0 states have call successors, (0), 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 5079
[2023-11-29 02:45:40,423 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:45:40,434 INFO  L225             Difference]: With dead ends: 21779
[2023-11-29 02:45:40,434 INFO  L226             Difference]: Without dead ends: 14767
[2023-11-29 02:45:40,440 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5088 GetRequests, 5076 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:45:40,440 INFO  L413           NwaCegarLoop]: 12947 mSDtfsCounter, 33861 mSDsluCounter, 50772 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33861 SdHoareTripleChecker+Valid, 63719 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:45:40,440 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33861 Valid, 63719 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:45:40,454 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14767 states.
[2023-11-29 02:45:40,528 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14767 to 7842.
[2023-11-29 02:45:40,535 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7842 states, 7841 states have (on average 1.6663690855758193) internal successors, (13066), 7841 states have internal predecessors, (13066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:40,544 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 13066 transitions.
[2023-11-29 02:45:40,544 INFO  L78                 Accepts]: Start accepts. Automaton has 7842 states and 13066 transitions. Word has length 5079
[2023-11-29 02:45:40,547 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:45:40,547 INFO  L495      AbstractCegarLoop]: Abstraction has 7842 states and 13066 transitions.
[2023-11-29 02:45:40,548 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 668.5714285714286) internal successors, (4680), 7 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:40,548 INFO  L276                IsEmpty]: Start isEmpty. Operand 7842 states and 13066 transitions.
[2023-11-29 02:45:40,654 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5081
[2023-11-29 02:45:40,654 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:45:40,655 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:45:40,746 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2023-11-29 02:45:40,855 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:40,856 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:45:40,856 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:45:40,856 INFO  L85        PathProgramCache]: Analyzing trace with hash -291772912, now seen corresponding path program 1 times
[2023-11-29 02:45:40,856 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:45:40,857 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118150420]
[2023-11-29 02:45:40,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:40,857 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:45:41,409 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:45:41,409 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360985873]
[2023-11-29 02:45:41,410 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:41,410 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:41,411 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:45:41,411 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:45:41,412 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 02:45:48,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:45:48,922 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30679 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:45:48,986 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:45:49,200 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked.
[2023-11-29 02:45:49,200 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:45:49,200 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:45:49,200 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118150420]
[2023-11-29 02:45:49,200 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:45:49,200 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360985873]
[2023-11-29 02:45:49,200 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [360985873] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:45:49,201 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:45:49,202 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:45:49,202 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673145626]
[2023-11-29 02:45:49,202 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:45:49,204 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:45:49,204 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:45:49,206 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:45:49,206 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:45:49,207 INFO  L87              Difference]: Start difference. First operand 7842 states and 13066 transitions. Second operand  has 7 states, 7 states have (on average 669.0) internal successors, (4683), 7 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:49,646 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:45:49,646 INFO  L93              Difference]: Finished difference Result 21785 states and 36298 transitions.
[2023-11-29 02:45:49,646 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:45:49,647 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 669.0) internal successors, (4683), 7 states have internal predecessors, (4683), 0 states have call successors, (0), 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 5080
[2023-11-29 02:45:49,651 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:45:49,661 INFO  L225             Difference]: With dead ends: 21785
[2023-11-29 02:45:49,661 INFO  L226             Difference]: Without dead ends: 14768
[2023-11-29 02:45:49,666 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5089 GetRequests, 5077 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:45:49,666 INFO  L413           NwaCegarLoop]: 12942 mSDtfsCounter, 33860 mSDsluCounter, 50757 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33860 SdHoareTripleChecker+Valid, 63699 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:45:49,667 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33860 Valid, 63699 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:45:49,678 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14768 states.
[2023-11-29 02:45:49,745 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14768 to 7844.
[2023-11-29 02:45:49,752 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7844 states, 7843 states have (on average 1.6661991584852736) internal successors, (13068), 7843 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:49,760 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7844 states to 7844 states and 13068 transitions.
[2023-11-29 02:45:49,760 INFO  L78                 Accepts]: Start accepts. Automaton has 7844 states and 13068 transitions. Word has length 5080
[2023-11-29 02:45:49,762 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:45:49,762 INFO  L495      AbstractCegarLoop]: Abstraction has 7844 states and 13068 transitions.
[2023-11-29 02:45:49,763 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 669.0) internal successors, (4683), 7 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:49,763 INFO  L276                IsEmpty]: Start isEmpty. Operand 7844 states and 13068 transitions.
[2023-11-29 02:45:49,867 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5082
[2023-11-29 02:45:49,868 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:45:49,868 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:45:49,948 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-11-29 02:45:50,069 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:50,069 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:45:50,070 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:45:50,070 INFO  L85        PathProgramCache]: Analyzing trace with hash 155214676, now seen corresponding path program 1 times
[2023-11-29 02:45:50,070 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:45:50,070 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267453918]
[2023-11-29 02:45:50,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:50,071 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:45:50,523 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:45:50,523 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254170266]
[2023-11-29 02:45:50,525 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:50,525 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:50,525 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:45:50,526 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:45:50,527 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 02:45:57,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:45:57,951 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30683 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:45:58,014 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:45:58,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked.
[2023-11-29 02:45:58,234 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:45:58,234 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:45:58,234 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267453918]
[2023-11-29 02:45:58,235 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:45:58,235 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254170266]
[2023-11-29 02:45:58,235 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254170266] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:45:58,235 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:45:58,237 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:45:58,237 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593246263]
[2023-11-29 02:45:58,237 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:45:58,239 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:45:58,239 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:45:58,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:45:58,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:45:58,243 INFO  L87              Difference]: Start difference. First operand 7844 states and 13068 transitions. Second operand  has 7 states, 7 states have (on average 669.4285714285714) internal successors, (4686), 7 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:58,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:45:58,677 INFO  L93              Difference]: Finished difference Result 21791 states and 36304 transitions.
[2023-11-29 02:45:58,677 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:45:58,678 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 669.4285714285714) internal successors, (4686), 7 states have internal predecessors, (4686), 0 states have call successors, (0), 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 5081
[2023-11-29 02:45:58,682 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:45:58,692 INFO  L225             Difference]: With dead ends: 21791
[2023-11-29 02:45:58,692 INFO  L226             Difference]: Without dead ends: 14769
[2023-11-29 02:45:58,697 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5090 GetRequests, 5078 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:45:58,698 INFO  L413           NwaCegarLoop]: 12937 mSDtfsCounter, 33859 mSDsluCounter, 50742 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33859 SdHoareTripleChecker+Valid, 63679 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:45:58,698 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33859 Valid, 63679 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:45:58,711 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14769 states.
[2023-11-29 02:45:58,776 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14769 to 7846.
[2023-11-29 02:45:58,782 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7846 states, 7845 states have (on average 1.6660293180369663) internal successors, (13070), 7845 states have internal predecessors, (13070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:58,790 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7846 states to 7846 states and 13070 transitions.
[2023-11-29 02:45:58,790 INFO  L78                 Accepts]: Start accepts. Automaton has 7846 states and 13070 transitions. Word has length 5081
[2023-11-29 02:45:58,792 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:45:58,792 INFO  L495      AbstractCegarLoop]: Abstraction has 7846 states and 13070 transitions.
[2023-11-29 02:45:58,793 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 669.4285714285714) internal successors, (4686), 7 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:58,793 INFO  L276                IsEmpty]: Start isEmpty. Operand 7846 states and 13070 transitions.
[2023-11-29 02:45:58,898 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5083
[2023-11-29 02:45:58,898 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:45:58,899 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:45:58,977 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 02:45:59,099 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-11-29 02:45:59,099 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:45:59,100 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:45:59,100 INFO  L85        PathProgramCache]: Analyzing trace with hash 1820482168, now seen corresponding path program 1 times
[2023-11-29 02:45:59,100 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:45:59,101 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567364129]
[2023-11-29 02:45:59,101 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:59,101 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:45:59,543 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:45:59,543 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916471737]
[2023-11-29 02:45:59,544 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:59,544 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:59,544 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:45:59,545 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:45:59,546 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 02:46:06,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:46:07,042 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30686 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:46:07,106 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:46:07,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked.
[2023-11-29 02:46:07,329 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:46:07,329 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:46:07,329 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567364129]
[2023-11-29 02:46:07,329 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:46:07,329 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916471737]
[2023-11-29 02:46:07,329 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [916471737] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:46:07,329 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:46:07,330 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:46:07,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685221894]
[2023-11-29 02:46:07,330 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:46:07,332 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:46:07,333 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:46:07,335 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:46:07,335 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:46:07,336 INFO  L87              Difference]: Start difference. First operand 7846 states and 13070 transitions. Second operand  has 7 states, 7 states have (on average 669.8571428571429) internal successors, (4689), 7 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:07,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:46:07,773 INFO  L93              Difference]: Finished difference Result 21797 states and 36310 transitions.
[2023-11-29 02:46:07,773 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:46:07,774 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 669.8571428571429) internal successors, (4689), 7 states have internal predecessors, (4689), 0 states have call successors, (0), 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 5082
[2023-11-29 02:46:07,778 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:46:07,788 INFO  L225             Difference]: With dead ends: 21797
[2023-11-29 02:46:07,788 INFO  L226             Difference]: Without dead ends: 14770
[2023-11-29 02:46:07,793 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5091 GetRequests, 5079 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:46:07,793 INFO  L413           NwaCegarLoop]: 12932 mSDtfsCounter, 33858 mSDsluCounter, 50727 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33858 SdHoareTripleChecker+Valid, 63659 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:46:07,794 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33858 Valid, 63659 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:46:07,807 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14770 states.
[2023-11-29 02:46:07,873 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14770 to 7848.
[2023-11-29 02:46:07,880 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7848 states, 7847 states have (on average 1.665859564164649) internal successors, (13072), 7847 states have internal predecessors, (13072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:07,887 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7848 states to 7848 states and 13072 transitions.
[2023-11-29 02:46:07,888 INFO  L78                 Accepts]: Start accepts. Automaton has 7848 states and 13072 transitions. Word has length 5082
[2023-11-29 02:46:07,890 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:46:07,890 INFO  L495      AbstractCegarLoop]: Abstraction has 7848 states and 13072 transitions.
[2023-11-29 02:46:07,891 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 669.8571428571429) internal successors, (4689), 7 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:07,891 INFO  L276                IsEmpty]: Start isEmpty. Operand 7848 states and 13072 transitions.
[2023-11-29 02:46:07,997 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5084
[2023-11-29 02:46:07,997 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:46:07,998 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]
[2023-11-29 02:46:08,077 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-11-29 02:46:08,198 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 02:46:08,199 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:46:08,199 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:46:08,200 INFO  L85        PathProgramCache]: Analyzing trace with hash 1048947822, now seen corresponding path program 1 times
[2023-11-29 02:46:08,200 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:46:08,200 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878721826]
[2023-11-29 02:46:08,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:08,202 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:46:08,749 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:46:08,749 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594918188]
[2023-11-29 02:46:08,750 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:08,750 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:46:08,751 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:46:08,751 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:46:08,752 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-11-29 02:46:15,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:46:15,961 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30689 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:46:16,029 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:46:16,250 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2023-11-29 02:46:16,250 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:46:16,251 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:46:16,251 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878721826]
[2023-11-29 02:46:16,251 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:46:16,251 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594918188]
[2023-11-29 02:46:16,251 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594918188] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:46:16,251 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:46:16,253 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:46:16,253 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143755392]
[2023-11-29 02:46:16,253 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:46:16,256 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:46:16,256 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:46:16,258 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:46:16,258 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:46:16,259 INFO  L87              Difference]: Start difference. First operand 7848 states and 13072 transitions. Second operand  has 7 states, 7 states have (on average 670.2857142857143) internal successors, (4692), 7 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:16,695 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:46:16,695 INFO  L93              Difference]: Finished difference Result 21803 states and 36316 transitions.
[2023-11-29 02:46:16,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:46:16,696 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 670.2857142857143) internal successors, (4692), 7 states have internal predecessors, (4692), 0 states have call successors, (0), 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 5083
[2023-11-29 02:46:16,700 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:46:16,710 INFO  L225             Difference]: With dead ends: 21803
[2023-11-29 02:46:16,710 INFO  L226             Difference]: Without dead ends: 14771
[2023-11-29 02:46:16,715 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5092 GetRequests, 5080 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:46:16,716 INFO  L413           NwaCegarLoop]: 12927 mSDtfsCounter, 33857 mSDsluCounter, 50712 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33857 SdHoareTripleChecker+Valid, 63639 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:46:16,716 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33857 Valid, 63639 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:46:16,728 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14771 states.
[2023-11-29 02:46:16,795 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14771 to 7850.
[2023-11-29 02:46:16,801 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7850 states, 7849 states have (on average 1.6656898968021403) internal successors, (13074), 7849 states have internal predecessors, (13074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:16,808 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 13074 transitions.
[2023-11-29 02:46:16,808 INFO  L78                 Accepts]: Start accepts. Automaton has 7850 states and 13074 transitions. Word has length 5083
[2023-11-29 02:46:16,811 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:46:16,811 INFO  L495      AbstractCegarLoop]: Abstraction has 7850 states and 13074 transitions.
[2023-11-29 02:46:16,812 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 670.2857142857143) internal successors, (4692), 7 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:16,812 INFO  L276                IsEmpty]: Start isEmpty. Operand 7850 states and 13074 transitions.
[2023-11-29 02:46:16,916 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5085
[2023-11-29 02:46:16,916 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:46:16,917 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:46:16,997 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-11-29 02:46:17,118 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:46:17,118 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:46:17,118 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:46:17,119 INFO  L85        PathProgramCache]: Analyzing trace with hash -1478379938, now seen corresponding path program 1 times
[2023-11-29 02:46:17,119 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:46:17,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816910312]
[2023-11-29 02:46:17,120 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:17,120 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:46:17,563 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:46:17,563 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450230944]
[2023-11-29 02:46:17,564 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:17,564 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:46:17,564 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:46:17,565 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:46:17,566 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-11-29 02:46:24,845 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:46:25,042 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30692 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:46:25,106 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:46:25,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked.
[2023-11-29 02:46:25,349 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:46:25,349 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:46:25,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816910312]
[2023-11-29 02:46:25,349 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:46:25,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450230944]
[2023-11-29 02:46:25,350 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450230944] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:46:25,350 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:46:25,351 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:46:25,351 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131286102]
[2023-11-29 02:46:25,352 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:46:25,354 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:46:25,354 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:46:25,356 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:46:25,356 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:46:25,357 INFO  L87              Difference]: Start difference. First operand 7850 states and 13074 transitions. Second operand  has 7 states, 7 states have (on average 670.7142857142857) internal successors, (4695), 7 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:25,794 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:46:25,794 INFO  L93              Difference]: Finished difference Result 21809 states and 36322 transitions.
[2023-11-29 02:46:25,794 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:46:25,795 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 670.7142857142857) internal successors, (4695), 7 states have internal predecessors, (4695), 0 states have call successors, (0), 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 5084
[2023-11-29 02:46:25,799 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:46:25,809 INFO  L225             Difference]: With dead ends: 21809
[2023-11-29 02:46:25,809 INFO  L226             Difference]: Without dead ends: 14772
[2023-11-29 02:46:25,814 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5093 GetRequests, 5081 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:46:25,815 INFO  L413           NwaCegarLoop]: 12922 mSDtfsCounter, 33856 mSDsluCounter, 50697 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33856 SdHoareTripleChecker+Valid, 63619 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:46:25,815 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33856 Valid, 63619 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:46:25,827 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14772 states.
[2023-11-29 02:46:25,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14772 to 7852.
[2023-11-29 02:46:25,899 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7852 states, 7851 states have (on average 1.665520315883327) internal successors, (13076), 7851 states have internal predecessors, (13076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:25,906 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7852 states to 7852 states and 13076 transitions.
[2023-11-29 02:46:25,906 INFO  L78                 Accepts]: Start accepts. Automaton has 7852 states and 13076 transitions. Word has length 5084
[2023-11-29 02:46:25,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:46:25,909 INFO  L495      AbstractCegarLoop]: Abstraction has 7852 states and 13076 transitions.
[2023-11-29 02:46:25,910 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 670.7142857142857) internal successors, (4695), 7 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:25,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 7852 states and 13076 transitions.
[2023-11-29 02:46:26,015 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5086
[2023-11-29 02:46:26,015 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:46:26,016 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]
[2023-11-29 02:46:26,099 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0
[2023-11-29 02:46:26,216 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:46:26,217 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:46:26,217 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:46:26,218 INFO  L85        PathProgramCache]: Analyzing trace with hash 1404365578, now seen corresponding path program 1 times
[2023-11-29 02:46:26,218 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:46:26,218 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779844434]
[2023-11-29 02:46:26,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:26,218 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:46:26,662 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:46:26,662 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291015126]
[2023-11-29 02:46:26,663 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:26,663 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:46:26,663 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:46:26,664 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:46:26,665 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-11-29 02:46:34,044 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:46:34,225 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30696 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:46:34,289 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:46:34,528 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked.
[2023-11-29 02:46:34,528 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:46:34,528 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:46:34,528 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779844434]
[2023-11-29 02:46:34,528 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:46:34,529 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291015126]
[2023-11-29 02:46:34,529 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291015126] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:46:34,529 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:46:34,531 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:46:34,531 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538891096]
[2023-11-29 02:46:34,531 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:46:34,533 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:46:34,533 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:46:34,535 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:46:34,535 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:46:34,536 INFO  L87              Difference]: Start difference. First operand 7852 states and 13076 transitions. Second operand  has 7 states, 7 states have (on average 671.1428571428571) internal successors, (4698), 7 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:34,978 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:46:34,978 INFO  L93              Difference]: Finished difference Result 21815 states and 36328 transitions.
[2023-11-29 02:46:34,979 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:46:34,980 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 671.1428571428571) internal successors, (4698), 7 states have internal predecessors, (4698), 0 states have call successors, (0), 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 5085
[2023-11-29 02:46:34,984 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:46:34,994 INFO  L225             Difference]: With dead ends: 21815
[2023-11-29 02:46:34,994 INFO  L226             Difference]: Without dead ends: 14773
[2023-11-29 02:46:35,000 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5094 GetRequests, 5082 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:46:35,000 INFO  L413           NwaCegarLoop]: 12917 mSDtfsCounter, 33855 mSDsluCounter, 50682 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33855 SdHoareTripleChecker+Valid, 63599 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:46:35,000 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33855 Valid, 63599 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:46:35,013 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14773 states.
[2023-11-29 02:46:35,082 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14773 to 7854.
[2023-11-29 02:46:35,089 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7854 states, 7853 states have (on average 1.6653508213421622) internal successors, (13078), 7853 states have internal predecessors, (13078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:35,097 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7854 states to 7854 states and 13078 transitions.
[2023-11-29 02:46:35,097 INFO  L78                 Accepts]: Start accepts. Automaton has 7854 states and 13078 transitions. Word has length 5085
[2023-11-29 02:46:35,100 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:46:35,100 INFO  L495      AbstractCegarLoop]: Abstraction has 7854 states and 13078 transitions.
[2023-11-29 02:46:35,101 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 671.1428571428571) internal successors, (4698), 7 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:35,101 INFO  L276                IsEmpty]: Start isEmpty. Operand 7854 states and 13078 transitions.
[2023-11-29 02:46:35,206 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5087
[2023-11-29 02:46:35,206 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:46:35,207 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:46:35,291 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2023-11-29 02:46:35,408 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:46:35,408 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:46:35,408 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:46:35,410 INFO  L85        PathProgramCache]: Analyzing trace with hash 126122950, now seen corresponding path program 1 times
[2023-11-29 02:46:35,410 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:46:35,410 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061829458]
[2023-11-29 02:46:35,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:35,411 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:46:35,866 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:46:35,867 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322805432]
[2023-11-29 02:46:35,868 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:35,868 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:46:35,868 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:46:35,869 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:46:35,869 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-11-29 02:46:43,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:46:43,472 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30699 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 02:46:43,534 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:46:43,764 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked.
[2023-11-29 02:46:43,765 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:46:43,765 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:46:43,765 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061829458]
[2023-11-29 02:46:43,765 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:46:43,765 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322805432]
[2023-11-29 02:46:43,765 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322805432] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:46:43,765 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:46:43,766 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:46:43,766 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555974098]
[2023-11-29 02:46:43,766 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:46:43,768 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:46:43,769 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:46:43,770 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:46:43,771 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:46:43,772 INFO  L87              Difference]: Start difference. First operand 7854 states and 13078 transitions. Second operand  has 8 states, 8 states have (on average 587.625) internal successors, (4701), 8 states have internal predecessors, (4701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:44,293 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:46:44,293 INFO  L93              Difference]: Finished difference Result 21821 states and 36334 transitions.
[2023-11-29 02:46:44,293 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:46:44,294 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 587.625) internal successors, (4701), 8 states have internal predecessors, (4701), 0 states have call successors, (0), 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 5086
[2023-11-29 02:46:44,298 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:46:44,308 INFO  L225             Difference]: With dead ends: 21821
[2023-11-29 02:46:44,308 INFO  L226             Difference]: Without dead ends: 14774
[2023-11-29 02:46:44,313 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5095 GetRequests, 5082 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 02:46:44,314 INFO  L413           NwaCegarLoop]: 12912 mSDtfsCounter, 33854 mSDsluCounter, 62169 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33854 SdHoareTripleChecker+Valid, 75081 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:46:44,314 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33854 Valid, 75081 Invalid, 54 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:46:44,327 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14774 states.
[2023-11-29 02:46:44,396 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14774 to 7856.
[2023-11-29 02:46:44,403 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7856 states, 7855 states have (on average 1.665181413112667) internal successors, (13080), 7855 states have internal predecessors, (13080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:44,411 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7856 states to 7856 states and 13080 transitions.
[2023-11-29 02:46:44,411 INFO  L78                 Accepts]: Start accepts. Automaton has 7856 states and 13080 transitions. Word has length 5086
[2023-11-29 02:46:44,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:46:44,414 INFO  L495      AbstractCegarLoop]: Abstraction has 7856 states and 13080 transitions.
[2023-11-29 02:46:44,415 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 587.625) internal successors, (4701), 8 states have internal predecessors, (4701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:44,415 INFO  L276                IsEmpty]: Start isEmpty. Operand 7856 states and 13080 transitions.
[2023-11-29 02:46:44,520 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5088
[2023-11-29 02:46:44,520 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:46:44,521 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:46:44,603 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-11-29 02:46:44,722 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2023-11-29 02:46:44,722 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:46:44,722 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:46:44,723 INFO  L85        PathProgramCache]: Analyzing trace with hash -351711196, now seen corresponding path program 1 times
[2023-11-29 02:46:44,723 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:46:44,723 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858301459]
[2023-11-29 02:46:44,723 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:44,724 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:46:45,194 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:46:45,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621567068]
[2023-11-29 02:46:45,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:45,195 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:46:45,195 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:46:45,196 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:46:45,196 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-11-29 02:46:52,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:46:52,844 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30702 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:46:52,907 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:46:53,118 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked.
[2023-11-29 02:46:53,118 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:46:53,118 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:46:53,118 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858301459]
[2023-11-29 02:46:53,118 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:46:53,119 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621567068]
[2023-11-29 02:46:53,119 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621567068] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:46:53,119 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:46:53,120 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:46:53,120 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087104160]
[2023-11-29 02:46:53,120 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:46:53,122 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:46:53,122 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:46:53,124 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:46:53,124 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:46:53,125 INFO  L87              Difference]: Start difference. First operand 7856 states and 13080 transitions. Second operand  has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:53,556 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:46:53,556 INFO  L93              Difference]: Finished difference Result 21827 states and 36340 transitions.
[2023-11-29 02:46:53,556 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:46:53,558 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 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 5087
[2023-11-29 02:46:53,561 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:46:53,571 INFO  L225             Difference]: With dead ends: 21827
[2023-11-29 02:46:53,572 INFO  L226             Difference]: Without dead ends: 14775
[2023-11-29 02:46:53,578 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5096 GetRequests, 5084 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:46:53,578 INFO  L413           NwaCegarLoop]: 12907 mSDtfsCounter, 33853 mSDsluCounter, 50652 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33853 SdHoareTripleChecker+Valid, 63559 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:46:53,578 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33853 Valid, 63559 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:46:53,590 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14775 states.
[2023-11-29 02:46:53,657 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14775 to 7858.
[2023-11-29 02:46:53,663 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7858 states, 7857 states have (on average 1.6650120911289297) internal successors, (13082), 7857 states have internal predecessors, (13082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:53,671 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 13082 transitions.
[2023-11-29 02:46:53,671 INFO  L78                 Accepts]: Start accepts. Automaton has 7858 states and 13082 transitions. Word has length 5087
[2023-11-29 02:46:53,674 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:46:53,674 INFO  L495      AbstractCegarLoop]: Abstraction has 7858 states and 13082 transitions.
[2023-11-29 02:46:53,675 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:46:53,675 INFO  L276                IsEmpty]: Start isEmpty. Operand 7858 states and 13082 transitions.
[2023-11-29 02:46:53,779 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5089
[2023-11-29 02:46:53,779 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:46:53,780 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:46:53,860 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2023-11-29 02:46:53,981 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2023-11-29 02:46:53,981 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:46:53,981 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:46:53,982 INFO  L85        PathProgramCache]: Analyzing trace with hash -356279380, now seen corresponding path program 1 times
[2023-11-29 02:46:53,982 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:46:53,982 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662068407]
[2023-11-29 02:46:53,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:53,983 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:46:54,444 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:46:54,444 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70547581]
[2023-11-29 02:46:54,445 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:46:54,445 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:46:54,445 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:46:54,446 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:46:54,447 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-11-29 02:47:01,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:47:01,609 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30705 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:47:01,677 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:47:01,896 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked.
[2023-11-29 02:47:01,896 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:47:01,896 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:47:01,896 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662068407]
[2023-11-29 02:47:01,896 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:47:01,896 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70547581]
[2023-11-29 02:47:01,896 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [70547581] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:47:01,896 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:47:01,898 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:47:01,898 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160638323]
[2023-11-29 02:47:01,898 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:47:01,900 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:47:01,900 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:47:01,903 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:47:01,903 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:47:01,904 INFO  L87              Difference]: Start difference. First operand 7858 states and 13082 transitions. Second operand  has 7 states, 7 states have (on average 672.4285714285714) internal successors, (4707), 7 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:02,349 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:47:02,349 INFO  L93              Difference]: Finished difference Result 21833 states and 36346 transitions.
[2023-11-29 02:47:02,349 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:47:02,350 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 672.4285714285714) internal successors, (4707), 7 states have internal predecessors, (4707), 0 states have call successors, (0), 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 5088
[2023-11-29 02:47:02,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:47:02,365 INFO  L225             Difference]: With dead ends: 21833
[2023-11-29 02:47:02,365 INFO  L226             Difference]: Without dead ends: 14776
[2023-11-29 02:47:02,370 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5097 GetRequests, 5085 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:47:02,371 INFO  L413           NwaCegarLoop]: 12902 mSDtfsCounter, 33852 mSDsluCounter, 50637 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33852 SdHoareTripleChecker+Valid, 63539 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:47:02,371 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33852 Valid, 63539 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:47:02,384 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14776 states.
[2023-11-29 02:47:02,451 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14776 to 7860.
[2023-11-29 02:47:02,458 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7860 states, 7859 states have (on average 1.664842855325105) internal successors, (13084), 7859 states have internal predecessors, (13084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:02,466 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7860 states to 7860 states and 13084 transitions.
[2023-11-29 02:47:02,466 INFO  L78                 Accepts]: Start accepts. Automaton has 7860 states and 13084 transitions. Word has length 5088
[2023-11-29 02:47:02,468 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:47:02,469 INFO  L495      AbstractCegarLoop]: Abstraction has 7860 states and 13084 transitions.
[2023-11-29 02:47:02,470 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 672.4285714285714) internal successors, (4707), 7 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:02,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 7860 states and 13084 transitions.
[2023-11-29 02:47:02,574 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5090
[2023-11-29 02:47:02,574 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:47:02,575 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 02:47:02,657 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0
[2023-11-29 02:47:02,776 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2023-11-29 02:47:02,776 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:47:02,776 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:47:02,777 INFO  L85        PathProgramCache]: Analyzing trace with hash 249083840, now seen corresponding path program 1 times
[2023-11-29 02:47:02,777 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:47:02,777 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107285046]
[2023-11-29 02:47:02,778 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:02,778 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:47:03,225 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:47:03,225 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707403695]
[2023-11-29 02:47:03,226 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:03,226 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:47:03,226 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:47:03,227 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:47:03,228 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-11-29 02:47:10,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:47:10,605 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30709 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:47:10,842 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:47:11,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked.
[2023-11-29 02:47:11,062 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:47:11,063 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:47:11,063 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107285046]
[2023-11-29 02:47:11,063 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:47:11,063 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707403695]
[2023-11-29 02:47:11,063 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [707403695] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:47:11,063 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:47:11,065 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:47:11,065 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784650455]
[2023-11-29 02:47:11,065 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:47:11,068 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:47:11,068 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:47:11,070 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:47:11,070 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:47:11,070 INFO  L87              Difference]: Start difference. First operand 7860 states and 13084 transitions. Second operand  has 7 states, 7 states have (on average 672.8571428571429) internal successors, (4710), 7 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:11,505 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:47:11,505 INFO  L93              Difference]: Finished difference Result 21839 states and 36352 transitions.
[2023-11-29 02:47:11,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:47:11,506 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 672.8571428571429) internal successors, (4710), 7 states have internal predecessors, (4710), 0 states have call successors, (0), 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 5089
[2023-11-29 02:47:11,510 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:47:11,520 INFO  L225             Difference]: With dead ends: 21839
[2023-11-29 02:47:11,520 INFO  L226             Difference]: Without dead ends: 14777
[2023-11-29 02:47:11,525 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5098 GetRequests, 5086 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:47:11,526 INFO  L413           NwaCegarLoop]: 12897 mSDtfsCounter, 33851 mSDsluCounter, 50622 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33851 SdHoareTripleChecker+Valid, 63519 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:47:11,526 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33851 Valid, 63519 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:47:11,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14777 states.
[2023-11-29 02:47:11,603 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14777 to 7862.
[2023-11-29 02:47:11,609 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7862 states, 7861 states have (on average 1.6646737056354153) internal successors, (13086), 7861 states have internal predecessors, (13086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:11,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7862 states to 7862 states and 13086 transitions.
[2023-11-29 02:47:11,617 INFO  L78                 Accepts]: Start accepts. Automaton has 7862 states and 13086 transitions. Word has length 5089
[2023-11-29 02:47:11,619 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:47:11,620 INFO  L495      AbstractCegarLoop]: Abstraction has 7862 states and 13086 transitions.
[2023-11-29 02:47:11,620 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 672.8571428571429) internal successors, (4710), 7 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:11,621 INFO  L276                IsEmpty]: Start isEmpty. Operand 7862 states and 13086 transitions.
[2023-11-29 02:47:11,725 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5091
[2023-11-29 02:47:11,725 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:47:11,726 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:47:11,805 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0
[2023-11-29 02:47:11,927 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2023-11-29 02:47:11,927 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:47:11,927 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:47:11,928 INFO  L85        PathProgramCache]: Analyzing trace with hash -1919765996, now seen corresponding path program 1 times
[2023-11-29 02:47:11,928 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:47:11,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671317159]
[2023-11-29 02:47:11,928 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:11,929 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:47:12,372 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:47:12,372 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237374830]
[2023-11-29 02:47:12,373 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:12,373 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:47:12,373 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:47:12,374 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:47:12,375 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-11-29 02:47:19,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:47:19,888 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30712 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:47:19,951 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:47:20,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked.
[2023-11-29 02:47:20,168 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:47:20,168 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:47:20,168 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671317159]
[2023-11-29 02:47:20,168 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:47:20,168 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237374830]
[2023-11-29 02:47:20,168 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [237374830] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:47:20,168 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:47:20,170 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:47:20,170 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213761899]
[2023-11-29 02:47:20,170 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:47:20,173 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:47:20,173 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:47:20,175 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:47:20,175 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:47:20,176 INFO  L87              Difference]: Start difference. First operand 7862 states and 13086 transitions. Second operand  has 7 states, 7 states have (on average 673.2857142857143) internal successors, (4713), 7 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:20,627 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:47:20,627 INFO  L93              Difference]: Finished difference Result 21845 states and 36358 transitions.
[2023-11-29 02:47:20,627 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:47:20,629 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 673.2857142857143) internal successors, (4713), 7 states have internal predecessors, (4713), 0 states have call successors, (0), 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 5090
[2023-11-29 02:47:20,632 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:47:20,642 INFO  L225             Difference]: With dead ends: 21845
[2023-11-29 02:47:20,642 INFO  L226             Difference]: Without dead ends: 14778
[2023-11-29 02:47:20,648 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5099 GetRequests, 5087 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:47:20,648 INFO  L413           NwaCegarLoop]: 12892 mSDtfsCounter, 33850 mSDsluCounter, 50607 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33850 SdHoareTripleChecker+Valid, 63499 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:47:20,648 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33850 Valid, 63499 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:47:20,660 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14778 states.
[2023-11-29 02:47:20,726 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14778 to 7864.
[2023-11-29 02:47:20,733 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7864 states, 7863 states have (on average 1.6645046419941498) internal successors, (13088), 7863 states have internal predecessors, (13088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:20,742 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7864 states to 7864 states and 13088 transitions.
[2023-11-29 02:47:20,742 INFO  L78                 Accepts]: Start accepts. Automaton has 7864 states and 13088 transitions. Word has length 5090
[2023-11-29 02:47:20,744 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:47:20,744 INFO  L495      AbstractCegarLoop]: Abstraction has 7864 states and 13088 transitions.
[2023-11-29 02:47:20,745 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 673.2857142857143) internal successors, (4713), 7 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:20,745 INFO  L276                IsEmpty]: Start isEmpty. Operand 7864 states and 13088 transitions.
[2023-11-29 02:47:20,850 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5092
[2023-11-29 02:47:20,850 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:47:20,851 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:47:20,931 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2023-11-29 02:47:21,052 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2023-11-29 02:47:21,052 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:47:21,052 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:47:21,053 INFO  L85        PathProgramCache]: Analyzing trace with hash -465520422, now seen corresponding path program 1 times
[2023-11-29 02:47:21,053 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:47:21,053 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123831872]
[2023-11-29 02:47:21,054 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:21,054 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:47:21,499 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:47:21,499 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045480603]
[2023-11-29 02:47:21,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:21,500 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:47:21,500 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:47:21,501 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:47:21,502 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-11-29 02:47:28,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:47:28,787 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30715 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:47:28,849 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:47:29,067 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked.
[2023-11-29 02:47:29,067 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:47:29,067 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:47:29,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123831872]
[2023-11-29 02:47:29,067 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:47:29,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045480603]
[2023-11-29 02:47:29,067 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045480603] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:47:29,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:47:29,069 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:47:29,069 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123904878]
[2023-11-29 02:47:29,069 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:47:29,072 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:47:29,072 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:47:29,074 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:47:29,074 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:47:29,075 INFO  L87              Difference]: Start difference. First operand 7864 states and 13088 transitions. Second operand  has 7 states, 7 states have (on average 673.7142857142857) internal successors, (4716), 7 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:29,511 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:47:29,511 INFO  L93              Difference]: Finished difference Result 21851 states and 36364 transitions.
[2023-11-29 02:47:29,511 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:47:29,512 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 673.7142857142857) internal successors, (4716), 7 states have internal predecessors, (4716), 0 states have call successors, (0), 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 5091
[2023-11-29 02:47:29,516 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:47:29,527 INFO  L225             Difference]: With dead ends: 21851
[2023-11-29 02:47:29,527 INFO  L226             Difference]: Without dead ends: 14779
[2023-11-29 02:47:29,532 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5100 GetRequests, 5088 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:47:29,532 INFO  L413           NwaCegarLoop]: 12887 mSDtfsCounter, 33849 mSDsluCounter, 50592 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33849 SdHoareTripleChecker+Valid, 63479 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:47:29,532 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33849 Valid, 63479 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:47:29,547 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14779 states.
[2023-11-29 02:47:29,612 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14779 to 7866.
[2023-11-29 02:47:29,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7866 states, 7865 states have (on average 1.6643356643356644) internal successors, (13090), 7865 states have internal predecessors, (13090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:29,628 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7866 states to 7866 states and 13090 transitions.
[2023-11-29 02:47:29,628 INFO  L78                 Accepts]: Start accepts. Automaton has 7866 states and 13090 transitions. Word has length 5091
[2023-11-29 02:47:29,631 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:47:29,631 INFO  L495      AbstractCegarLoop]: Abstraction has 7866 states and 13090 transitions.
[2023-11-29 02:47:29,632 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 673.7142857142857) internal successors, (4716), 7 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:29,632 INFO  L276                IsEmpty]: Start isEmpty. Operand 7866 states and 13090 transitions.
[2023-11-29 02:47:29,738 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5093
[2023-11-29 02:47:29,738 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:47:29,739 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:47:29,821 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-11-29 02:47:29,939 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-11-29 02:47:29,939 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:47:29,940 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:47:29,940 INFO  L85        PathProgramCache]: Analyzing trace with hash 657266170, now seen corresponding path program 1 times
[2023-11-29 02:47:29,940 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:47:29,940 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953854868]
[2023-11-29 02:47:29,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:29,941 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:47:30,384 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:47:30,384 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092972461]
[2023-11-29 02:47:30,385 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:30,385 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:47:30,385 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:47:30,386 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:47:30,386 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-11-29 02:47:37,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:47:37,695 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30718 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:47:37,759 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:47:37,981 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked.
[2023-11-29 02:47:37,982 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:47:37,982 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:47:37,982 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953854868]
[2023-11-29 02:47:37,982 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:47:37,982 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092972461]
[2023-11-29 02:47:37,982 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092972461] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:47:37,982 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:47:37,984 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:47:37,984 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094795988]
[2023-11-29 02:47:37,984 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:47:37,987 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:47:37,987 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:47:37,990 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:47:37,990 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:47:37,991 INFO  L87              Difference]: Start difference. First operand 7866 states and 13090 transitions. Second operand  has 7 states, 7 states have (on average 674.1428571428571) internal successors, (4719), 7 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:38,429 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:47:38,430 INFO  L93              Difference]: Finished difference Result 21857 states and 36370 transitions.
[2023-11-29 02:47:38,430 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:47:38,431 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.1428571428571) internal successors, (4719), 7 states have internal predecessors, (4719), 0 states have call successors, (0), 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 5092
[2023-11-29 02:47:38,434 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:47:38,445 INFO  L225             Difference]: With dead ends: 21857
[2023-11-29 02:47:38,445 INFO  L226             Difference]: Without dead ends: 14780
[2023-11-29 02:47:38,450 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5101 GetRequests, 5089 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:47:38,450 INFO  L413           NwaCegarLoop]: 12882 mSDtfsCounter, 33848 mSDsluCounter, 50577 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33848 SdHoareTripleChecker+Valid, 63459 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:47:38,450 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33848 Valid, 63459 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:47:38,463 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14780 states.
[2023-11-29 02:47:38,529 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14780 to 7868.
[2023-11-29 02:47:38,535 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7868 states, 7867 states have (on average 1.6641667725943816) internal successors, (13092), 7867 states have internal predecessors, (13092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:38,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7868 states to 7868 states and 13092 transitions.
[2023-11-29 02:47:38,543 INFO  L78                 Accepts]: Start accepts. Automaton has 7868 states and 13092 transitions. Word has length 5092
[2023-11-29 02:47:38,545 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:47:38,545 INFO  L495      AbstractCegarLoop]: Abstraction has 7868 states and 13092 transitions.
[2023-11-29 02:47:38,546 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.1428571428571) internal successors, (4719), 7 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:38,546 INFO  L276                IsEmpty]: Start isEmpty. Operand 7868 states and 13092 transitions.
[2023-11-29 02:47:38,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5094
[2023-11-29 02:47:38,743 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:47:38,744 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 02:47:38,823 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2023-11-29 02:47:38,944 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-11-29 02:47:38,945 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:47:38,945 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:47:38,945 INFO  L85        PathProgramCache]: Analyzing trace with hash 250169718, now seen corresponding path program 1 times
[2023-11-29 02:47:38,946 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:47:38,946 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151026601]
[2023-11-29 02:47:38,946 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:38,946 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:47:39,389 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:47:39,389 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108557745]
[2023-11-29 02:47:39,390 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:39,390 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:47:39,390 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:47:39,391 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:47:39,391 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-11-29 02:47:46,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:47:46,835 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30722 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:47:46,901 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:47:47,116 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked.
[2023-11-29 02:47:47,116 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:47:47,116 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:47:47,117 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151026601]
[2023-11-29 02:47:47,117 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:47:47,117 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108557745]
[2023-11-29 02:47:47,117 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108557745] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:47:47,117 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:47:47,118 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:47:47,118 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094198754]
[2023-11-29 02:47:47,118 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:47:47,120 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:47:47,120 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:47:47,122 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:47:47,122 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:47:47,123 INFO  L87              Difference]: Start difference. First operand 7868 states and 13092 transitions. Second operand  has 7 states, 7 states have (on average 674.5714285714286) internal successors, (4722), 7 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:47,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:47:47,558 INFO  L93              Difference]: Finished difference Result 21863 states and 36376 transitions.
[2023-11-29 02:47:47,558 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:47:47,560 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.5714285714286) internal successors, (4722), 7 states have internal predecessors, (4722), 0 states have call successors, (0), 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 5093
[2023-11-29 02:47:47,563 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:47:47,573 INFO  L225             Difference]: With dead ends: 21863
[2023-11-29 02:47:47,574 INFO  L226             Difference]: Without dead ends: 14781
[2023-11-29 02:47:47,579 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5102 GetRequests, 5090 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:47:47,579 INFO  L413           NwaCegarLoop]: 12877 mSDtfsCounter, 33847 mSDsluCounter, 50562 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33847 SdHoareTripleChecker+Valid, 63439 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:47:47,579 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33847 Valid, 63439 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:47:47,591 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14781 states.
[2023-11-29 02:47:47,656 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14781 to 7870.
[2023-11-29 02:47:47,662 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7870 states, 7869 states have (on average 1.663997966704791) internal successors, (13094), 7869 states have internal predecessors, (13094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:47,669 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7870 states to 7870 states and 13094 transitions.
[2023-11-29 02:47:47,669 INFO  L78                 Accepts]: Start accepts. Automaton has 7870 states and 13094 transitions. Word has length 5093
[2023-11-29 02:47:47,672 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:47:47,672 INFO  L495      AbstractCegarLoop]: Abstraction has 7870 states and 13094 transitions.
[2023-11-29 02:47:47,673 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.5714285714286) internal successors, (4722), 7 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:47,673 INFO  L276                IsEmpty]: Start isEmpty. Operand 7870 states and 13094 transitions.
[2023-11-29 02:47:47,778 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5095
[2023-11-29 02:47:47,778 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:47:47,779 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]
[2023-11-29 02:47:47,861 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2023-11-29 02:47:47,979 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-11-29 02:47:47,980 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:47:47,980 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:47:47,981 INFO  L85        PathProgramCache]: Analyzing trace with hash -1176994462, now seen corresponding path program 1 times
[2023-11-29 02:47:47,981 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:47:47,981 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904450275]
[2023-11-29 02:47:47,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:47,981 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:47:48,434 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:47:48,434 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792297079]
[2023-11-29 02:47:48,435 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:48,435 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:47:48,435 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:47:48,436 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:47:48,438 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-11-29 02:47:55,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:47:55,951 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30725 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:47:56,015 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:47:56,247 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked.
[2023-11-29 02:47:56,247 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:47:56,248 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:47:56,248 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904450275]
[2023-11-29 02:47:56,248 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:47:56,248 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792297079]
[2023-11-29 02:47:56,248 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [792297079] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:47:56,248 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:47:56,250 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:47:56,250 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621899752]
[2023-11-29 02:47:56,250 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:47:56,253 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:47:56,253 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:47:56,254 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:47:56,255 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:47:56,256 INFO  L87              Difference]: Start difference. First operand 7870 states and 13094 transitions. Second operand  has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:56,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:47:56,701 INFO  L93              Difference]: Finished difference Result 21869 states and 36382 transitions.
[2023-11-29 02:47:56,702 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:47:56,703 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 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 5094
[2023-11-29 02:47:56,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:47:56,717 INFO  L225             Difference]: With dead ends: 21869
[2023-11-29 02:47:56,717 INFO  L226             Difference]: Without dead ends: 14782
[2023-11-29 02:47:56,722 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5103 GetRequests, 5091 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:47:56,722 INFO  L413           NwaCegarLoop]: 12872 mSDtfsCounter, 33846 mSDsluCounter, 50547 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33846 SdHoareTripleChecker+Valid, 63419 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:47:56,722 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33846 Valid, 63419 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:47:56,735 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14782 states.
[2023-11-29 02:47:56,800 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14782 to 7872.
[2023-11-29 02:47:56,807 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7872 states, 7871 states have (on average 1.6638292466014484) internal successors, (13096), 7871 states have internal predecessors, (13096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:56,816 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7872 states to 7872 states and 13096 transitions.
[2023-11-29 02:47:56,816 INFO  L78                 Accepts]: Start accepts. Automaton has 7872 states and 13096 transitions. Word has length 5094
[2023-11-29 02:47:56,819 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:47:56,819 INFO  L495      AbstractCegarLoop]: Abstraction has 7872 states and 13096 transitions.
[2023-11-29 02:47:56,819 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:56,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 7872 states and 13096 transitions.
[2023-11-29 02:47:56,924 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5096
[2023-11-29 02:47:56,925 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:47:56,925 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]
[2023-11-29 02:47:57,005 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2023-11-29 02:47:57,126 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40
[2023-11-29 02:47:57,126 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:47:57,127 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:47:57,127 INFO  L85        PathProgramCache]: Analyzing trace with hash 275342992, now seen corresponding path program 1 times
[2023-11-29 02:47:57,127 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:47:57,127 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495000626]
[2023-11-29 02:47:57,128 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:57,128 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:47:57,571 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:47:57,571 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487455838]
[2023-11-29 02:47:57,572 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:57,572 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:47:57,572 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:47:57,573 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:47:57,574 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-11-29 02:48:04,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:48:04,927 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30728 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:48:04,992 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:48:05,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked.
[2023-11-29 02:48:05,219 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:48:05,219 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:48:05,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495000626]
[2023-11-29 02:48:05,219 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:48:05,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487455838]
[2023-11-29 02:48:05,220 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [487455838] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:48:05,220 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:48:05,221 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:48:05,222 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089711532]
[2023-11-29 02:48:05,222 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:48:05,224 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:48:05,224 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:48:05,226 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:48:05,226 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:48:05,227 INFO  L87              Difference]: Start difference. First operand 7872 states and 13096 transitions. Second operand  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:05,682 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:48:05,683 INFO  L93              Difference]: Finished difference Result 21875 states and 36388 transitions.
[2023-11-29 02:48:05,683 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:48:05,684 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 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 5095
[2023-11-29 02:48:05,687 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:48:05,698 INFO  L225             Difference]: With dead ends: 21875
[2023-11-29 02:48:05,698 INFO  L226             Difference]: Without dead ends: 14783
[2023-11-29 02:48:05,703 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5104 GetRequests, 5092 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:48:05,704 INFO  L413           NwaCegarLoop]: 12867 mSDtfsCounter, 33845 mSDsluCounter, 50532 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33845 SdHoareTripleChecker+Valid, 63399 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:48:05,704 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33845 Valid, 63399 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:48:05,716 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14783 states.
[2023-11-29 02:48:05,785 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14783 to 7874.
[2023-11-29 02:48:05,792 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7874 states, 7873 states have (on average 1.6636606122189763) internal successors, (13098), 7873 states have internal predecessors, (13098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:05,800 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 13098 transitions.
[2023-11-29 02:48:05,801 INFO  L78                 Accepts]: Start accepts. Automaton has 7874 states and 13098 transitions. Word has length 5095
[2023-11-29 02:48:05,803 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:48:05,803 INFO  L495      AbstractCegarLoop]: Abstraction has 7874 states and 13098 transitions.
[2023-11-29 02:48:05,804 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:05,805 INFO  L276                IsEmpty]: Start isEmpty. Operand 7874 states and 13098 transitions.
[2023-11-29 02:48:05,910 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5097
[2023-11-29 02:48:05,910 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:48:05,911 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:48:05,994 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-11-29 02:48:06,111 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:48:06,112 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:48:06,112 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:48:06,113 INFO  L85        PathProgramCache]: Analyzing trace with hash -565598904, now seen corresponding path program 1 times
[2023-11-29 02:48:06,113 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:48:06,113 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250121504]
[2023-11-29 02:48:06,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:06,113 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:48:06,575 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:48:06,575 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728128211]
[2023-11-29 02:48:06,576 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:06,576 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:48:06,576 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:48:06,577 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:48:06,578 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-11-29 02:48:13,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:48:13,824 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30731 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:48:13,889 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:48:14,116 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked.
[2023-11-29 02:48:14,116 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:48:14,116 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:48:14,116 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250121504]
[2023-11-29 02:48:14,116 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:48:14,116 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728128211]
[2023-11-29 02:48:14,116 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728128211] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:48:14,116 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:48:14,118 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7



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



[2023-11-29 02:48:24,136 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0
[2023-11-29 02:48:24,254 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:48:24,255 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:48:24,255 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:48:24,256 INFO  L85        PathProgramCache]: Analyzing trace with hash -658416208, now seen corresponding path program 1 times
[2023-11-29 02:48:24,256 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:48:24,256 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094498087]
[2023-11-29 02:48:24,257 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:24,257 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:48:24,714 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:48:24,715 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479941011]
[2023-11-29 02:48:24,716 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:24,716 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:48:24,716 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:48:24,717 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:48:24,718 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-11-29 02:48:32,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:48:32,210 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30738 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:48:32,274 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:48:32,490 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked.
[2023-11-29 02:48:32,490 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:48:32,490 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:48:32,491 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094498087]
[2023-11-29 02:48:32,491 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:48:32,491 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479941011]
[2023-11-29 02:48:32,491 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [479941011] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:48:32,491 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:48:32,493 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:48:32,493 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485909840]
[2023-11-29 02:48:32,493 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:48:32,495 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:48:32,496 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:48:32,498 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:48:32,498 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:48:32,499 INFO  L87              Difference]: Start difference. First operand 7878 states and 13102 transitions. Second operand  has 7 states, 7 states have (on average 676.7142857142857) internal successors, (4737), 7 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:32,948 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:48:32,948 INFO  L93              Difference]: Finished difference Result 21893 states and 36406 transitions.
[2023-11-29 02:48:32,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:48:32,949 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 676.7142857142857) internal successors, (4737), 7 states have internal predecessors, (4737), 0 states have call successors, (0), 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 5098
[2023-11-29 02:48:32,953 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:48:32,963 INFO  L225             Difference]: With dead ends: 21893
[2023-11-29 02:48:32,963 INFO  L226             Difference]: Without dead ends: 14786
[2023-11-29 02:48:32,968 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5107 GetRequests, 5095 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:48:32,969 INFO  L413           NwaCegarLoop]: 12852 mSDtfsCounter, 33842 mSDsluCounter, 50487 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33842 SdHoareTripleChecker+Valid, 63339 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:48:32,969 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33842 Valid, 63339 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:48:32,981 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14786 states.
[2023-11-29 02:48:33,048 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14786 to 7880.
[2023-11-29 02:48:33,055 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7880 states, 7879 states have (on average 1.663155222744003) internal successors, (13104), 7879 states have internal predecessors, (13104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:33,062 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7880 states to 7880 states and 13104 transitions.
[2023-11-29 02:48:33,063 INFO  L78                 Accepts]: Start accepts. Automaton has 7880 states and 13104 transitions. Word has length 5098
[2023-11-29 02:48:33,065 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:48:33,065 INFO  L495      AbstractCegarLoop]: Abstraction has 7880 states and 13104 transitions.
[2023-11-29 02:48:33,066 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 676.7142857142857) internal successors, (4737), 7 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:33,066 INFO  L276                IsEmpty]: Start isEmpty. Operand 7880 states and 13104 transitions.
[2023-11-29 02:48:33,171 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5100
[2023-11-29 02:48:33,171 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:48:33,172 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]
[2023-11-29 02:48:33,253 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0
[2023-11-29 02:48:33,373 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:48:33,373 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:48:33,373 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:48:33,374 INFO  L85        PathProgramCache]: Analyzing trace with hash -1090463418, now seen corresponding path program 1 times
[2023-11-29 02:48:33,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:48:33,374 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266999393]
[2023-11-29 02:48:33,376 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:33,376 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:48:33,824 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:48:33,824 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651902703]
[2023-11-29 02:48:33,825 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:33,825 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:48:33,825 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:48:33,826 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:48:33,827 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-11-29 02:48:41,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:48:41,332 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30741 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:48:41,406 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:48:41,631 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked.
[2023-11-29 02:48:41,631 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:48:41,631 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:48:41,631 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266999393]
[2023-11-29 02:48:41,631 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:48:41,631 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651902703]
[2023-11-29 02:48:41,631 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [651902703] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:48:41,631 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:48:41,633 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:48:41,633 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188309998]
[2023-11-29 02:48:41,633 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:48:41,635 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:48:41,635 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:48:41,638 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:48:41,638 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:48:41,639 INFO  L87              Difference]: Start difference. First operand 7880 states and 13104 transitions. Second operand  has 7 states, 7 states have (on average 677.1428571428571) internal successors, (4740), 7 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:42,081 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:48:42,081 INFO  L93              Difference]: Finished difference Result 21899 states and 36412 transitions.
[2023-11-29 02:48:42,081 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:48:42,082 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 677.1428571428571) internal successors, (4740), 7 states have internal predecessors, (4740), 0 states have call successors, (0), 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 5099
[2023-11-29 02:48:42,086 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:48:42,096 INFO  L225             Difference]: With dead ends: 21899
[2023-11-29 02:48:42,096 INFO  L226             Difference]: Without dead ends: 14787
[2023-11-29 02:48:42,101 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5108 GetRequests, 5096 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:48:42,102 INFO  L413           NwaCegarLoop]: 12847 mSDtfsCounter, 33841 mSDsluCounter, 50472 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33841 SdHoareTripleChecker+Valid, 63319 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:48:42,102 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33841 Valid, 63319 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:48:42,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14787 states.
[2023-11-29 02:48:42,180 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14787 to 7882.
[2023-11-29 02:48:42,186 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7882 states, 7881 states have (on average 1.6629869305925644) internal successors, (13106), 7881 states have internal predecessors, (13106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:42,194 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7882 states to 7882 states and 13106 transitions.
[2023-11-29 02:48:42,194 INFO  L78                 Accepts]: Start accepts. Automaton has 7882 states and 13106 transitions. Word has length 5099
[2023-11-29 02:48:42,196 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:48:42,196 INFO  L495      AbstractCegarLoop]: Abstraction has 7882 states and 13106 transitions.
[2023-11-29 02:48:42,197 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 677.1428571428571) internal successors, (4740), 7 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:42,197 INFO  L276                IsEmpty]: Start isEmpty. Operand 7882 states and 13106 transitions.
[2023-11-29 02:48:42,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5101
[2023-11-29 02:48:42,303 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:48:42,304 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:48:42,383 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0
[2023-11-29 02:48:42,504 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:48:42,505 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:48:42,505 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:48:42,506 INFO  L85        PathProgramCache]: Analyzing trace with hash -2105226858, now seen corresponding path program 1 times
[2023-11-29 02:48:42,506 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:48:42,506 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843547646]
[2023-11-29 02:48:42,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:42,506 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:48:42,950 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:48:42,950 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595057566]
[2023-11-29 02:48:42,951 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:42,951 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:48:42,951 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:48:42,952 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:48:42,952 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-11-29 02:48:50,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:48:50,575 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30744 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:48:50,642 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:48:50,858 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked.
[2023-11-29 02:48:50,858 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:48:50,858 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:48:50,858 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843547646]
[2023-11-29 02:48:50,859 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:48:50,859 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595057566]
[2023-11-29 02:48:50,859 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [595057566] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:48:50,859 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:48:50,861 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:48:50,861 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652308214]
[2023-11-29 02:48:50,861 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:48:50,863 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:48:50,863 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:48:50,865 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:48:50,865 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:48:50,866 INFO  L87              Difference]: Start difference. First operand 7882 states and 13106 transitions. Second operand  has 7 states, 7 states have (on average 677.5714285714286) internal successors, (4743), 7 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:51,302 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:48:51,302 INFO  L93              Difference]: Finished difference Result 21905 states and 36418 transitions.
[2023-11-29 02:48:51,302 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:48:51,303 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 677.5714285714286) internal successors, (4743), 7 states have internal predecessors, (4743), 0 states have call successors, (0), 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 5100
[2023-11-29 02:48:51,306 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:48:51,317 INFO  L225             Difference]: With dead ends: 21905
[2023-11-29 02:48:51,317 INFO  L226             Difference]: Without dead ends: 14788
[2023-11-29 02:48:51,322 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5109 GetRequests, 5097 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:48:51,322 INFO  L413           NwaCegarLoop]: 12842 mSDtfsCounter, 33840 mSDsluCounter, 50457 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33840 SdHoareTripleChecker+Valid, 63299 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:48:51,323 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33840 Valid, 63299 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:48:51,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14788 states.
[2023-11-29 02:48:51,402 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14788 to 7884.
[2023-11-29 02:48:51,408 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7884 states, 7883 states have (on average 1.662818723836103) internal successors, (13108), 7883 states have internal predecessors, (13108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:51,416 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7884 states to 7884 states and 13108 transitions.
[2023-11-29 02:48:51,416 INFO  L78                 Accepts]: Start accepts. Automaton has 7884 states and 13108 transitions. Word has length 5100
[2023-11-29 02:48:51,418 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:48:51,418 INFO  L495      AbstractCegarLoop]: Abstraction has 7884 states and 13108 transitions.
[2023-11-29 02:48:51,419 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 677.5714285714286) internal successors, (4743), 7 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:48:51,419 INFO  L276                IsEmpty]: Start isEmpty. Operand 7884 states and 13108 transitions.
[2023-11-29 02:48:51,524 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5102
[2023-11-29 02:48:51,525 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:48:51,526 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:48:51,605 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0
[2023-11-29 02:48:51,726 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46
[2023-11-29 02:48:51,726 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:48:51,727 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:48:51,727 INFO  L85        PathProgramCache]: Analyzing trace with hash 2097593314, now seen corresponding path program 1 times
[2023-11-29 02:48:51,727 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:48:51,727 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708659852]
[2023-11-29 02:48:51,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:51,728 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:48:52,175 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:48:52,175 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372543336]
[2023-11-29 02:48:52,176 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:48:52,176 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:48:52,176 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:48:52,177 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:48:52,178 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-11-29 02:48:59,306 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:48:59,505 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30748 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:48:59,569 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:48:59,981 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked.
[2023-11-29 02:48:59,982 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:48:59,982 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:48:59,982 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708659852]
[2023-11-29 02:48:59,982 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:48:59,982 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372543336]
[2023-11-29 02:48:59,982 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [372543336] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:48:59,982 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:48:59,984 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:48:59,984 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713125544]
[2023-11-29 02:48:59,984 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:48:59,987 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:48:59,987 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:48:59,989 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:48:59,989 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:48:59,990 INFO  L87              Difference]: Start difference. First operand 7884 states and 13108 transitions. Second operand  has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:00,426 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:49:00,427 INFO  L93              Difference]: Finished difference Result 21911 states and 36424 transitions.
[2023-11-29 02:49:00,427 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:49:00,428 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 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 5101
[2023-11-29 02:49:00,432 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:49:00,443 INFO  L225             Difference]: With dead ends: 21911
[2023-11-29 02:49:00,443 INFO  L226             Difference]: Without dead ends: 14789
[2023-11-29 02:49:00,448 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5110 GetRequests, 5098 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:49:00,449 INFO  L413           NwaCegarLoop]: 12837 mSDtfsCounter, 33839 mSDsluCounter, 50442 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33839 SdHoareTripleChecker+Valid, 63279 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:49:00,449 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33839 Valid, 63279 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:49:00,461 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14789 states.
[2023-11-29 02:49:00,526 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14789 to 7886.
[2023-11-29 02:49:00,532 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7886 states, 7885 states have (on average 1.6626506024096386) internal successors, (13110), 7885 states have internal predecessors, (13110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:00,540 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7886 states to 7886 states and 13110 transitions.
[2023-11-29 02:49:00,540 INFO  L78                 Accepts]: Start accepts. Automaton has 7886 states and 13110 transitions. Word has length 5101
[2023-11-29 02:49:00,542 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:49:00,542 INFO  L495      AbstractCegarLoop]: Abstraction has 7886 states and 13110 transitions.
[2023-11-29 02:49:00,543 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:00,543 INFO  L276                IsEmpty]: Start isEmpty. Operand 7886 states and 13110 transitions.
[2023-11-29 02:49:00,648 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5103
[2023-11-29 02:49:00,648 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:49:00,649 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]
[2023-11-29 02:49:00,729 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0
[2023-11-29 02:49:00,850 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:00,850 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:49:00,850 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:49:00,851 INFO  L85        PathProgramCache]: Analyzing trace with hash -1476865282, now seen corresponding path program 1 times
[2023-11-29 02:49:00,851 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:49:00,851 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413275144]
[2023-11-29 02:49:00,852 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:00,852 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:49:01,296 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:49:01,296 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810058175]
[2023-11-29 02:49:01,297 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:01,297 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:01,297 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:49:01,298 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:49:01,299 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-11-29 02:49:08,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:49:08,794 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30751 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:49:08,858 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:49:09,072 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked.
[2023-11-29 02:49:09,072 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:49:09,072 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:49:09,072 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413275144]
[2023-11-29 02:49:09,072 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:49:09,073 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810058175]
[2023-11-29 02:49:09,073 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [810058175] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:49:09,073 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:49:09,074 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:49:09,075 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983047476]
[2023-11-29 02:49:09,075 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:49:09,077 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:49:09,077 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:49:09,079 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:49:09,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:49:09,080 INFO  L87              Difference]: Start difference. First operand 7886 states and 13110 transitions. Second operand  has 7 states, 7 states have (on average 678.4285714285714) internal successors, (4749), 7 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:09,520 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:49:09,520 INFO  L93              Difference]: Finished difference Result 21917 states and 36430 transitions.
[2023-11-29 02:49:09,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:49:09,521 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.4285714285714) internal successors, (4749), 7 states have internal predecessors, (4749), 0 states have call successors, (0), 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 5102
[2023-11-29 02:49:09,524 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:49:09,535 INFO  L225             Difference]: With dead ends: 21917
[2023-11-29 02:49:09,535 INFO  L226             Difference]: Without dead ends: 14790
[2023-11-29 02:49:09,541 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5111 GetRequests, 5099 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:49:09,542 INFO  L413           NwaCegarLoop]: 12832 mSDtfsCounter, 33838 mSDsluCounter, 50427 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33838 SdHoareTripleChecker+Valid, 63259 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:49:09,542 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33838 Valid, 63259 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:49:09,555 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14790 states.
[2023-11-29 02:49:09,629 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14790 to 7888.
[2023-11-29 02:49:09,636 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7888 states, 7887 states have (on average 1.6624825662482565) internal successors, (13112), 7887 states have internal predecessors, (13112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:09,644 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 13112 transitions.
[2023-11-29 02:49:09,644 INFO  L78                 Accepts]: Start accepts. Automaton has 7888 states and 13112 transitions. Word has length 5102
[2023-11-29 02:49:09,647 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:49:09,647 INFO  L495      AbstractCegarLoop]: Abstraction has 7888 states and 13112 transitions.
[2023-11-29 02:49:09,648 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.4285714285714) internal successors, (4749), 7 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:09,648 INFO  L276                IsEmpty]: Start isEmpty. Operand 7888 states and 13112 transitions.
[2023-11-29 02:49:09,859 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5104
[2023-11-29 02:49:09,859 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:49:09,860 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]
[2023-11-29 02:49:09,955 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0
[2023-11-29 02:49:10,060 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:10,061 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:49:10,061 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:49:10,062 INFO  L85        PathProgramCache]: Analyzing trace with hash 147099900, now seen corresponding path program 1 times
[2023-11-29 02:49:10,062 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:49:10,062 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396116730]
[2023-11-29 02:49:10,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:10,062 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:49:10,538 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:49:10,538 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986775198]
[2023-11-29 02:49:10,539 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:10,539 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:10,539 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:49:10,540 INFO  L229       MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:49:10,540 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2023-11-29 02:49:18,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:49:18,264 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30754 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:49:18,331 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:49:18,545 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked.
[2023-11-29 02:49:18,545 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:49:18,545 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:49:18,545 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396116730]
[2023-11-29 02:49:18,545 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:49:18,545 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986775198]
[2023-11-29 02:49:18,546 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986775198] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:49:18,546 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:49:18,547 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:49:18,548 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201102787]
[2023-11-29 02:49:18,548 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:49:18,550 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:49:18,550 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:49:18,552 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:49:18,552 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:49:18,553 INFO  L87              Difference]: Start difference. First operand 7888 states and 13112 transitions. Second operand  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:19,013 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:49:19,013 INFO  L93              Difference]: Finished difference Result 21923 states and 36436 transitions.
[2023-11-29 02:49:19,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:49:19,014 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 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 5103
[2023-11-29 02:49:19,018 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:49:19,028 INFO  L225             Difference]: With dead ends: 21923
[2023-11-29 02:49:19,028 INFO  L226             Difference]: Without dead ends: 14791
[2023-11-29 02:49:19,033 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5112 GetRequests, 5100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:49:19,033 INFO  L413           NwaCegarLoop]: 12827 mSDtfsCounter, 33837 mSDsluCounter, 50412 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33837 SdHoareTripleChecker+Valid, 63239 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:49:19,034 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33837 Valid, 63239 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:49:19,046 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14791 states.
[2023-11-29 02:49:19,115 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14791 to 7890.
[2023-11-29 02:49:19,122 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7890 states, 7889 states have (on average 1.6623146152871087) internal successors, (13114), 7889 states have internal predecessors, (13114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:19,130 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7890 states to 7890 states and 13114 transitions.
[2023-11-29 02:49:19,130 INFO  L78                 Accepts]: Start accepts. Automaton has 7890 states and 13114 transitions. Word has length 5103
[2023-11-29 02:49:19,133 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:49:19,133 INFO  L495      AbstractCegarLoop]: Abstraction has 7890 states and 13114 transitions.
[2023-11-29 02:49:19,134 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:19,134 INFO  L276                IsEmpty]: Start isEmpty. Operand 7890 states and 13114 transitions.
[2023-11-29 02:49:19,239 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5105
[2023-11-29 02:49:19,240 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:49:19,240 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]
[2023-11-29 02:49:19,328 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0
[2023-11-29 02:49:19,441 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49
[2023-11-29 02:49:19,441 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:49:19,441 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:49:19,442 INFO  L85        PathProgramCache]: Analyzing trace with hash 1468662500, now seen corresponding path program 1 times
[2023-11-29 02:49:19,442 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:49:19,442 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994111154]
[2023-11-29 02:49:19,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:19,443 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:49:19,904 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:49:19,904 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552240247]
[2023-11-29 02:49:19,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:19,905 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:19,905 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:49:19,906 INFO  L229       MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:49:19,906 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2023-11-29 02:49:27,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:49:27,532 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30757 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:49:27,599 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:49:27,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2023-11-29 02:49:27,840 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:49:27,840 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:49:27,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994111154]
[2023-11-29 02:49:27,841 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:49:27,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552240247]
[2023-11-29 02:49:27,841 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552240247] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:49:27,841 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:49:27,843 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:49:27,843 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796610130]
[2023-11-29 02:49:27,843 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:49:27,846 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:49:27,846 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:49:27,849 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:49:27,849 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:49:27,850 INFO  L87              Difference]: Start difference. First operand 7890 states and 13114 transitions. Second operand  has 7 states, 7 states have (on average 679.2857142857143) internal successors, (4755), 7 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:28,300 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:49:28,300 INFO  L93              Difference]: Finished difference Result 21929 states and 36442 transitions.
[2023-11-29 02:49:28,300 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:49:28,301 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.2857142857143) internal successors, (4755), 7 states have internal predecessors, (4755), 0 states have call successors, (0), 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 5104
[2023-11-29 02:49:28,305 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:49:28,315 INFO  L225             Difference]: With dead ends: 21929
[2023-11-29 02:49:28,315 INFO  L226             Difference]: Without dead ends: 14792
[2023-11-29 02:49:28,321 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5113 GetRequests, 5101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:49:28,321 INFO  L413           NwaCegarLoop]: 12822 mSDtfsCounter, 33836 mSDsluCounter, 50397 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33836 SdHoareTripleChecker+Valid, 63219 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:49:28,321 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33836 Valid, 63219 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:49:28,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14792 states.
[2023-11-29 02:49:28,404 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14792 to 7892.
[2023-11-29 02:49:28,410 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7892 states, 7891 states have (on average 1.6621467494614117) internal successors, (13116), 7891 states have internal predecessors, (13116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:28,419 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7892 states to 7892 states and 13116 transitions.
[2023-11-29 02:49:28,419 INFO  L78                 Accepts]: Start accepts. Automaton has 7892 states and 13116 transitions. Word has length 5104
[2023-11-29 02:49:28,422 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:49:28,422 INFO  L495      AbstractCegarLoop]: Abstraction has 7892 states and 13116 transitions.
[2023-11-29 02:49:28,423 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.2857142857143) internal successors, (4755), 7 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:28,423 INFO  L276                IsEmpty]: Start isEmpty. Operand 7892 states and 13116 transitions.
[2023-11-29 02:49:28,529 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5106
[2023-11-29 02:49:28,529 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:49:28,530 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:49:28,614 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0
[2023-11-29 02:49:28,730 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50
[2023-11-29 02:49:28,731 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:49:28,731 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:49:28,732 INFO  L85        PathProgramCache]: Analyzing trace with hash 30317720, now seen corresponding path program 1 times
[2023-11-29 02:49:28,732 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:49:28,732 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282035020]
[2023-11-29 02:49:28,732 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:28,732 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:49:29,185 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:49:29,186 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930300717]
[2023-11-29 02:49:29,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:29,187 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:29,187 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:49:29,188 INFO  L229       MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:49:29,188 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2023-11-29 02:49:36,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:49:36,738 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30761 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:49:36,804 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:49:37,024 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked.
[2023-11-29 02:49:37,025 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:49:37,025 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:49:37,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282035020]
[2023-11-29 02:49:37,025 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:49:37,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930300717]
[2023-11-29 02:49:37,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930300717] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:49:37,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:49:37,027 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:49:37,027 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224814403]
[2023-11-29 02:49:37,027 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:49:37,030 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:49:37,030 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:49:37,032 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:49:37,032 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:49:37,033 INFO  L87              Difference]: Start difference. First operand 7892 states and 13116 transitions. Second operand  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:37,482 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:49:37,482 INFO  L93              Difference]: Finished difference Result 21935 states and 36448 transitions.
[2023-11-29 02:49:37,482 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:49:37,484 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 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 5105
[2023-11-29 02:49:37,487 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:49:37,497 INFO  L225             Difference]: With dead ends: 21935
[2023-11-29 02:49:37,497 INFO  L226             Difference]: Without dead ends: 14793
[2023-11-29 02:49:37,502 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5114 GetRequests, 5102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:49:37,503 INFO  L413           NwaCegarLoop]: 12817 mSDtfsCounter, 33835 mSDsluCounter, 50382 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33835 SdHoareTripleChecker+Valid, 63199 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:49:37,503 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33835 Valid, 63199 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:49:37,516 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14793 states.
[2023-11-29 02:49:37,587 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14793 to 7894.
[2023-11-29 02:49:37,594 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7894 states, 7893 states have (on average 1.6619789687064488) internal successors, (13118), 7893 states have internal predecessors, (13118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:37,602 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7894 states to 7894 states and 13118 transitions.
[2023-11-29 02:49:37,602 INFO  L78                 Accepts]: Start accepts. Automaton has 7894 states and 13118 transitions. Word has length 5105
[2023-11-29 02:49:37,605 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:49:37,605 INFO  L495      AbstractCegarLoop]: Abstraction has 7894 states and 13118 transitions.
[2023-11-29 02:49:37,606 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:37,606 INFO  L276                IsEmpty]: Start isEmpty. Operand 7894 states and 13118 transitions.
[2023-11-29 02:49:37,712 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5107
[2023-11-29 02:49:37,712 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:49:37,713 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:49:37,794 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0
[2023-11-29 02:49:37,913 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:37,914 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:49:37,914 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:49:37,914 INFO  L85        PathProgramCache]: Analyzing trace with hash 912940364, now seen corresponding path program 1 times
[2023-11-29 02:49:37,914 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:49:37,914 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456145863]
[2023-11-29 02:49:37,915 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:37,915 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:49:38,379 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:49:38,379 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801321279]
[2023-11-29 02:49:38,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:38,380 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:38,380 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:49:38,381 INFO  L229       MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:49:38,382 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-11-29 02:49:45,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:49:45,960 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30764 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:49:46,026 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:49:46,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked.
[2023-11-29 02:49:46,242 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:49:46,242 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:49:46,242 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456145863]
[2023-11-29 02:49:46,242 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:49:46,242 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801321279]
[2023-11-29 02:49:46,242 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [801321279] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:49:46,242 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:49:46,244 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:49:46,244 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133182856]
[2023-11-29 02:49:46,244 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:49:46,246 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:49:46,246 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:49:46,248 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:49:46,248 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:49:46,249 INFO  L87              Difference]: Start difference. First operand 7894 states and 13118 transitions. Second operand  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:46,690 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:49:46,690 INFO  L93              Difference]: Finished difference Result 21941 states and 36454 transitions.
[2023-11-29 02:49:46,690 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:49:46,692 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 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 5106
[2023-11-29 02:49:46,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:49:46,705 INFO  L225             Difference]: With dead ends: 21941
[2023-11-29 02:49:46,705 INFO  L226             Difference]: Without dead ends: 14794
[2023-11-29 02:49:46,711 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5115 GetRequests, 5103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:49:46,711 INFO  L413           NwaCegarLoop]: 12812 mSDtfsCounter, 33834 mSDsluCounter, 50367 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33834 SdHoareTripleChecker+Valid, 63179 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:49:46,711 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33834 Valid, 63179 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:49:46,728 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14794 states.
[2023-11-29 02:49:46,817 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14794 to 7896.
[2023-11-29 02:49:46,824 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7896 states, 7895 states have (on average 1.661811272957568) internal successors, (13120), 7895 states have internal predecessors, (13120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:46,832 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 13120 transitions.
[2023-11-29 02:49:46,832 INFO  L78                 Accepts]: Start accepts. Automaton has 7896 states and 13120 transitions. Word has length 5106
[2023-11-29 02:49:46,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:49:46,834 INFO  L495      AbstractCegarLoop]: Abstraction has 7896 states and 13120 transitions.
[2023-11-29 02:49:46,835 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:46,836 INFO  L276                IsEmpty]: Start isEmpty. Operand 7896 states and 13120 transitions.
[2023-11-29 02:49:46,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5108
[2023-11-29 02:49:46,941 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:49:46,942 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:49:47,023 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-11-29 02:49:47,142 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52
[2023-11-29 02:49:47,143 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:49:47,143 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:49:47,144 INFO  L85        PathProgramCache]: Analyzing trace with hash 800198066, now seen corresponding path program 1 times
[2023-11-29 02:49:47,144 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:49:47,144 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708478262]
[2023-11-29 02:49:47,145 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:47,145 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:49:47,598 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:49:47,598 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307479951]
[2023-11-29 02:49:47,599 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:47,599 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:47,600 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:49:47,600 INFO  L229       MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:49:47,601 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2023-11-29 02:49:55,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:49:55,289 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30767 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:49:55,353 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:49:55,567 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked.
[2023-11-29 02:49:55,568 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:49:55,568 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:49:55,568 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708478262]
[2023-11-29 02:49:55,568 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:49:55,568 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307479951]
[2023-11-29 02:49:55,568 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307479951] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:49:55,568 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:49:55,570 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:49:55,570 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999503530]
[2023-11-29 02:49:55,570 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:49:55,573 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:49:55,573 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:49:55,575 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:49:55,575 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:49:55,576 INFO  L87              Difference]: Start difference. First operand 7896 states and 13120 transitions. Second operand  has 7 states, 7 states have (on average 680.5714285714286) internal successors, (4764), 7 states have internal predecessors, (4764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:56,013 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:49:56,013 INFO  L93              Difference]: Finished difference Result 21947 states and 36460 transitions.
[2023-11-29 02:49:56,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:49:56,015 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 680.5714285714286) internal successors, (4764), 7 states have internal predecessors, (4764), 0 states have call successors, (0), 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 5107
[2023-11-29 02:49:56,018 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:49:56,029 INFO  L225             Difference]: With dead ends: 21947
[2023-11-29 02:49:56,029 INFO  L226             Difference]: Without dead ends: 14795
[2023-11-29 02:49:56,034 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5116 GetRequests, 5104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:49:56,035 INFO  L413           NwaCegarLoop]: 12807 mSDtfsCounter, 33833 mSDsluCounter, 50352 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33833 SdHoareTripleChecker+Valid, 63159 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:49:56,035 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33833 Valid, 63159 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:49:56,047 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14795 states.
[2023-11-29 02:49:56,116 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14795 to 7898.
[2023-11-29 02:49:56,122 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7898 states, 7897 states have (on average 1.6616436621501836) internal successors, (13122), 7897 states have internal predecessors, (13122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:56,131 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7898 states to 7898 states and 13122 transitions.
[2023-11-29 02:49:56,131 INFO  L78                 Accepts]: Start accepts. Automaton has 7898 states and 13122 transitions. Word has length 5107
[2023-11-29 02:49:56,133 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:49:56,133 INFO  L495      AbstractCegarLoop]: Abstraction has 7898 states and 13122 transitions.
[2023-11-29 02:49:56,134 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 680.5714285714286) internal successors, (4764), 7 states have internal predecessors, (4764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:49:56,135 INFO  L276                IsEmpty]: Start isEmpty. Operand 7898 states and 13122 transitions.
[2023-11-29 02:49:56,240 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5109
[2023-11-29 02:49:56,240 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:49:56,241 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]
[2023-11-29 02:49:56,324 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0
[2023-11-29 02:49:56,442 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:56,442 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:49:56,442 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:49:56,443 INFO  L85        PathProgramCache]: Analyzing trace with hash 1380241714, now seen corresponding path program 1 times
[2023-11-29 02:49:56,443 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:49:56,443 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338935438]
[2023-11-29 02:49:56,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:56,444 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:49:56,902 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:49:56,903 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236729196]
[2023-11-29 02:49:56,904 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:49:56,904 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:49:56,904 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:49:56,905 INFO  L229       MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:49:56,905 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2023-11-29 02:50:04,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:04,387 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30770 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:50:04,455 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:04,661 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked.
[2023-11-29 02:50:04,661 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:04,661 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:04,661 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338935438]
[2023-11-29 02:50:04,661 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:04,661 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236729196]
[2023-11-29 02:50:04,662 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236729196] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:04,662 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:04,663 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:50:04,664 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170249256]
[2023-11-29 02:50:04,664 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:04,666 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:50:04,666 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:04,668 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:50:04,668 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:50:04,669 INFO  L87              Difference]: Start difference. First operand 7898 states and 13122 transitions. Second operand  has 7 states, 7 states have (on average 681.0) internal successors, (4767), 7 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:05,119 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:05,119 INFO  L93              Difference]: Finished difference Result 21953 states and 36466 transitions.
[2023-11-29 02:50:05,119 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:50:05,120 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 681.0) internal successors, (4767), 7 states have internal predecessors, (4767), 0 states have call successors, (0), 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 5108
[2023-11-29 02:50:05,124 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:05,135 INFO  L225             Difference]: With dead ends: 21953
[2023-11-29 02:50:05,135 INFO  L226             Difference]: Without dead ends: 14796
[2023-11-29 02:50:05,141 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5117 GetRequests, 5105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:50:05,141 INFO  L413           NwaCegarLoop]: 12802 mSDtfsCounter, 33832 mSDsluCounter, 50337 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33832 SdHoareTripleChecker+Valid, 63139 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:05,141 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33832 Valid, 63139 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:05,155 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14796 states.
[2023-11-29 02:50:05,228 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14796 to 7900.
[2023-11-29 02:50:05,235 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7900 states, 7899 states have (on average 1.6614761362197747) internal successors, (13124), 7899 states have internal predecessors, (13124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:05,243 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 13124 transitions.
[2023-11-29 02:50:05,243 INFO  L78                 Accepts]: Start accepts. Automaton has 7900 states and 13124 transitions. Word has length 5108
[2023-11-29 02:50:05,246 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:05,246 INFO  L495      AbstractCegarLoop]: Abstraction has 7900 states and 13124 transitions.
[2023-11-29 02:50:05,248 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 681.0) internal successors, (4767), 7 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:05,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 7900 states and 13124 transitions.
[2023-11-29 02:50:05,354 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5110
[2023-11-29 02:50:05,354 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:05,355 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 02:50:05,436 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0
[2023-11-29 02:50:05,556 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54
[2023-11-29 02:50:05,556 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:05,556 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:05,557 INFO  L85        PathProgramCache]: Analyzing trace with hash -1191624114, now seen corresponding path program 1 times
[2023-11-29 02:50:05,557 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:05,557 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528459643]
[2023-11-29 02:50:05,557 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:05,557 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:06,015 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:06,016 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654861572]
[2023-11-29 02:50:06,017 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:06,017 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:06,017 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:06,017 INFO  L229       MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:06,018 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2023-11-29 02:50:13,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:13,472 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30774 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:50:13,539 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:13,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2023-11-29 02:50:13,762 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:13,762 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:13,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528459643]
[2023-11-29 02:50:13,762 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:13,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654861572]
[2023-11-29 02:50:13,762 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654861572] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:13,763 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:13,764 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:50:13,764 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85777706]
[2023-11-29 02:50:13,764 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:13,767 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:50:13,767 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:13,769 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:50:13,769 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:50:13,770 INFO  L87              Difference]: Start difference. First operand 7900 states and 13124 transitions. Second operand  has 7 states, 7 states have (on average 681.4285714285714) internal successors, (4770), 7 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:14,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:14,218 INFO  L93              Difference]: Finished difference Result 21959 states and 36472 transitions.
[2023-11-29 02:50:14,219 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:50:14,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 681.4285714285714) internal successors, (4770), 7 states have internal predecessors, (4770), 0 states have call successors, (0), 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 5109
[2023-11-29 02:50:14,223 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:14,235 INFO  L225             Difference]: With dead ends: 21959
[2023-11-29 02:50:14,235 INFO  L226             Difference]: Without dead ends: 14797
[2023-11-29 02:50:14,240 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5118 GetRequests, 5106 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:50:14,240 INFO  L413           NwaCegarLoop]: 12797 mSDtfsCounter, 33831 mSDsluCounter, 50322 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33831 SdHoareTripleChecker+Valid, 63119 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:14,241 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33831 Valid, 63119 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:14,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14797 states.
[2023-11-29 02:50:14,345 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14797 to 7902.
[2023-11-29 02:50:14,351 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7902 states, 7901 states have (on average 1.6613086951018858) internal successors, (13126), 7901 states have internal predecessors, (13126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:14,359 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 13126 transitions.
[2023-11-29 02:50:14,359 INFO  L78                 Accepts]: Start accepts. Automaton has 7902 states and 13126 transitions. Word has length 5109
[2023-11-29 02:50:14,362 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:14,362 INFO  L495      AbstractCegarLoop]: Abstraction has 7902 states and 13126 transitions.
[2023-11-29 02:50:14,363 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 681.4285714285714) internal successors, (4770), 7 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:14,363 INFO  L276                IsEmpty]: Start isEmpty. Operand 7902 states and 13126 transitions.
[2023-11-29 02:50:14,468 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5111
[2023-11-29 02:50:14,468 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:14,469 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]
[2023-11-29 02:50:14,550 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0
[2023-11-29 02:50:14,670 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2023-11-29 02:50:14,670 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:14,670 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:14,671 INFO  L85        PathProgramCache]: Analyzing trace with hash -1002341222, now seen corresponding path program 1 times
[2023-11-29 02:50:14,671 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:14,671 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835897967]
[2023-11-29 02:50:14,671 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:14,671 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:15,126 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:15,126 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443409312]
[2023-11-29 02:50:15,127 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:15,127 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:15,127 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:15,128 INFO  L229       MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:15,129 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2023-11-29 02:50:22,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:22,717 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30777 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:50:22,783 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:23,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked.
[2023-11-29 02:50:23,003 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:23,003 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:23,003 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835897967]
[2023-11-29 02:50:23,003 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:23,003 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443409312]
[2023-11-29 02:50:23,003 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443409312] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:23,003 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:23,005 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:50:23,005 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968303954]
[2023-11-29 02:50:23,005 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:23,007 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:50:23,007 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:23,009 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:50:23,010 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:50:23,010 INFO  L87              Difference]: Start difference. First operand 7902 states and 13126 transitions. Second operand  has 7 states, 7 states have (on average 681.8571428571429) internal successors, (4773), 7 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:23,447 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:23,447 INFO  L93              Difference]: Finished difference Result 21965 states and 36478 transitions.
[2023-11-29 02:50:23,448 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:50:23,449 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 681.8571428571429) internal successors, (4773), 7 states have internal predecessors, (4773), 0 states have call successors, (0), 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 5110
[2023-11-29 02:50:23,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:23,463 INFO  L225             Difference]: With dead ends: 21965
[2023-11-29 02:50:23,463 INFO  L226             Difference]: Without dead ends: 14798
[2023-11-29 02:50:23,468 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5119 GetRequests, 5107 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:50:23,469 INFO  L413           NwaCegarLoop]: 12792 mSDtfsCounter, 33830 mSDsluCounter, 50307 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33830 SdHoareTripleChecker+Valid, 63099 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:23,469 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33830 Valid, 63099 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:23,481 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14798 states.
[2023-11-29 02:50:23,553 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14798 to 7904.
[2023-11-29 02:50:23,559 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7904 states, 7903 states have (on average 1.661141338732127) internal successors, (13128), 7903 states have internal predecessors, (13128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:23,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7904 states to 7904 states and 13128 transitions.
[2023-11-29 02:50:23,568 INFO  L78                 Accepts]: Start accepts. Automaton has 7904 states and 13128 transitions. Word has length 5110
[2023-11-29 02:50:23,570 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:23,570 INFO  L495      AbstractCegarLoop]: Abstraction has 7904 states and 13128 transitions.
[2023-11-29 02:50:23,571 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 681.8571428571429) internal successors, (4773), 7 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:23,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 7904 states and 13128 transitions.
[2023-11-29 02:50:23,678 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5112
[2023-11-29 02:50:23,678 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:23,679 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:50:23,763 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0
[2023-11-29 02:50:23,880 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56
[2023-11-29 02:50:23,880 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:23,880 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:23,881 INFO  L85        PathProgramCache]: Analyzing trace with hash -16330904, now seen corresponding path program 1 times
[2023-11-29 02:50:23,882 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:23,882 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180114872]
[2023-11-29 02:50:23,882 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:23,882 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:24,341 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:24,341 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013710311]
[2023-11-29 02:50:24,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:24,342 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:24,342 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:24,343 INFO  L229       MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:24,344 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2023-11-29 02:50:31,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:31,702 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30780 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:50:31,768 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:31,981 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked.
[2023-11-29 02:50:31,981 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:31,981 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:31,981 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180114872]
[2023-11-29 02:50:31,981 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:31,981 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013710311]
[2023-11-29 02:50:31,982 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013710311] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:31,982 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:31,983 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:50:31,983 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010251113]
[2023-11-29 02:50:31,983 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:31,985 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:50:31,985 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:31,987 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:50:31,987 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:50:31,988 INFO  L87              Difference]: Start difference. First operand 7904 states and 13128 transitions. Second operand  has 7 states, 7 states have (on average 682.2857142857143) internal successors, (4776), 7 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:32,438 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:32,438 INFO  L93              Difference]: Finished difference Result 21971 states and 36484 transitions.
[2023-11-29 02:50:32,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:50:32,440 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 682.2857142857143) internal successors, (4776), 7 states have internal predecessors, (4776), 0 states have call successors, (0), 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 5111
[2023-11-29 02:50:32,443 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:32,454 INFO  L225             Difference]: With dead ends: 21971
[2023-11-29 02:50:32,454 INFO  L226             Difference]: Without dead ends: 14799
[2023-11-29 02:50:32,459 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5120 GetRequests, 5108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:50:32,460 INFO  L413           NwaCegarLoop]: 12787 mSDtfsCounter, 33829 mSDsluCounter, 50292 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33829 SdHoareTripleChecker+Valid, 63079 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:32,460 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33829 Valid, 63079 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:32,473 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14799 states.
[2023-11-29 02:50:32,546 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14799 to 7906.
[2023-11-29 02:50:32,552 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7906 states, 7905 states have (on average 1.6609740670461732) internal successors, (13130), 7905 states have internal predecessors, (13130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:32,560 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 13130 transitions.
[2023-11-29 02:50:32,561 INFO  L78                 Accepts]: Start accepts. Automaton has 7906 states and 13130 transitions. Word has length 5111
[2023-11-29 02:50:32,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:32,563 INFO  L495      AbstractCegarLoop]: Abstraction has 7906 states and 13130 transitions.
[2023-11-29 02:50:32,564 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 682.2857142857143) internal successors, (4776), 7 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:32,564 INFO  L276                IsEmpty]: Start isEmpty. Operand 7906 states and 13130 transitions.
[2023-11-29 02:50:32,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5113
[2023-11-29 02:50:32,670 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:32,671 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:50:32,758 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0
[2023-11-29 02:50:32,872 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57
[2023-11-29 02:50:32,872 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:32,872 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:32,874 INFO  L85        PathProgramCache]: Analyzing trace with hash -119491456, now seen corresponding path program 1 times
[2023-11-29 02:50:32,874 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:32,874 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278426624]
[2023-11-29 02:50:32,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:32,875 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:33,331 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:33,332 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281688014]
[2023-11-29 02:50:33,332 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:33,333 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:33,333 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:33,333 INFO  L229       MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:33,334 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2023-11-29 02:50:40,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:40,722 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30783 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:50:40,788 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:41,010 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked.
[2023-11-29 02:50:41,010 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:41,010 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:41,010 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278426624]
[2023-11-29 02:50:41,010 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:41,011 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281688014]
[2023-11-29 02:50:41,011 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281688014] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:41,011 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:41,012 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:50:41,012 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414901796]
[2023-11-29 02:50:41,013 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:41,014 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:50:41,015 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:41,016 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:50:41,017 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:50:41,018 INFO  L87              Difference]: Start difference. First operand 7906 states and 13130 transitions. Second operand  has 7 states, 7 states have (on average 682.7142857142857) internal successors, (4779), 7 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:41,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:41,465 INFO  L93              Difference]: Finished difference Result 21977 states and 36490 transitions.
[2023-11-29 02:50:41,465 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:50:41,466 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 682.7142857142857) internal successors, (4779), 7 states have internal predecessors, (4779), 0 states have call successors, (0), 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 5112
[2023-11-29 02:50:41,470 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:41,481 INFO  L225             Difference]: With dead ends: 21977
[2023-11-29 02:50:41,481 INFO  L226             Difference]: Without dead ends: 14800
[2023-11-29 02:50:41,487 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5121 GetRequests, 5109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:50:41,487 INFO  L413           NwaCegarLoop]: 12782 mSDtfsCounter, 33828 mSDsluCounter, 50277 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33828 SdHoareTripleChecker+Valid, 63059 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:41,487 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33828 Valid, 63059 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:41,500 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14800 states.
[2023-11-29 02:50:41,577 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14800 to 7908.
[2023-11-29 02:50:41,584 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7908 states, 7907 states have (on average 1.6608068799797648) internal successors, (13132), 7907 states have internal predecessors, (13132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:41,592 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7908 states to 7908 states and 13132 transitions.
[2023-11-29 02:50:41,592 INFO  L78                 Accepts]: Start accepts. Automaton has 7908 states and 13132 transitions. Word has length 5112
[2023-11-29 02:50:41,595 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:41,595 INFO  L495      AbstractCegarLoop]: Abstraction has 7908 states and 13132 transitions.
[2023-11-29 02:50:41,597 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 682.7142857142857) internal successors, (4779), 7 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:41,597 INFO  L276                IsEmpty]: Start isEmpty. Operand 7908 states and 13132 transitions.
[2023-11-29 02:50:41,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5114
[2023-11-29 02:50:41,706 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:41,707 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:50:41,796 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0
[2023-11-29 02:50:41,907 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58
[2023-11-29 02:50:41,907 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:41,908 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:41,908 INFO  L85        PathProgramCache]: Analyzing trace with hash 621030660, now seen corresponding path program 1 times
[2023-11-29 02:50:41,908 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:41,908 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227537735]
[2023-11-29 02:50:41,909 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:41,909 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:42,362 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:42,362 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066346601]
[2023-11-29 02:50:42,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:42,363 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:42,363 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:42,364 INFO  L229       MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:42,365 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2023-11-29 02:50:49,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:49,703 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30787 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:50:49,768 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:49,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked.
[2023-11-29 02:50:49,994 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:49,994 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:49,994 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227537735]
[2023-11-29 02:50:49,994 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:49,994 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066346601]
[2023-11-29 02:50:49,994 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066346601] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:49,994 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:49,996 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:50:49,996 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037951530]
[2023-11-29 02:50:49,996 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:49,999 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:50:49,999 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:50,001 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:50:50,001 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:50:50,002 INFO  L87              Difference]: Start difference. First operand 7908 states and 13132 transitions. Second operand  has 7 states, 7 states have (on average 683.1428571428571) internal successors, (4782), 7 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:50,444 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:50,444 INFO  L93              Difference]: Finished difference Result 21983 states and 36496 transitions.
[2023-11-29 02:50:50,445 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:50:50,446 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 683.1428571428571) internal successors, (4782), 7 states have internal predecessors, (4782), 0 states have call successors, (0), 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 5113
[2023-11-29 02:50:50,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:50,460 INFO  L225             Difference]: With dead ends: 21983
[2023-11-29 02:50:50,460 INFO  L226             Difference]: Without dead ends: 14801
[2023-11-29 02:50:50,466 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5122 GetRequests, 5110 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:50:50,466 INFO  L413           NwaCegarLoop]: 12777 mSDtfsCounter, 33827 mSDsluCounter, 50262 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33827 SdHoareTripleChecker+Valid, 63039 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:50,466 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33827 Valid, 63039 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:50,478 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14801 states.
[2023-11-29 02:50:50,548 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14801 to 7910.
[2023-11-29 02:50:50,554 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7910 states, 7909 states have (on average 1.6606397774687065) internal successors, (13134), 7909 states have internal predecessors, (13134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:50,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7910 states to 7910 states and 13134 transitions.
[2023-11-29 02:50:50,562 INFO  L78                 Accepts]: Start accepts. Automaton has 7910 states and 13134 transitions. Word has length 5113
[2023-11-29 02:50:50,565 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:50,565 INFO  L495      AbstractCegarLoop]: Abstraction has 7910 states and 13134 transitions.
[2023-11-29 02:50:50,566 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 683.1428571428571) internal successors, (4782), 7 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:50,566 INFO  L276                IsEmpty]: Start isEmpty. Operand 7910 states and 13134 transitions.
[2023-11-29 02:50:50,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5115
[2023-11-29 02:50:50,672 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:50,673 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]
[2023-11-29 02:50:50,757 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0
[2023-11-29 02:50:50,873 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2023-11-29 02:50:50,874 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:50:50,874 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:50:50,874 INFO  L85        PathProgramCache]: Analyzing trace with hash -1561743128, now seen corresponding path program 1 times
[2023-11-29 02:50:50,875 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:50:50,875 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700671368]
[2023-11-29 02:50:50,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:50,875 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:50:51,332 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:50:51,332 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272867732]
[2023-11-29 02:50:51,333 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:50:51,333 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:50:51,333 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:50:51,334 INFO  L229       MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:50:51,336 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2023-11-29 02:50:58,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:50:58,869 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30790 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:50:58,937 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:50:59,163 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked.
[2023-11-29 02:50:59,163 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:50:59,163 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:50:59,163 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700671368]
[2023-11-29 02:50:59,163 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:50:59,163 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272867732]
[2023-11-29 02:50:59,164 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272867732] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:50:59,164 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:50:59,165 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:50:59,166 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947705798]
[2023-11-29 02:50:59,166 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:50:59,168 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:50:59,168 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:50:59,170 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:50:59,170 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:50:59,170 INFO  L87              Difference]: Start difference. First operand 7910 states and 13134 transitions. Second operand  has 7 states, 7 states have (on average 683.5714285714286) internal successors, (4785), 7 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:59,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:50:59,600 INFO  L93              Difference]: Finished difference Result 21989 states and 36502 transitions.
[2023-11-29 02:50:59,601 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:50:59,602 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 683.5714285714286) internal successors, (4785), 7 states have internal predecessors, (4785), 0 states have call successors, (0), 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 5114
[2023-11-29 02:50:59,605 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:50:59,615 INFO  L225             Difference]: With dead ends: 21989
[2023-11-29 02:50:59,615 INFO  L226             Difference]: Without dead ends: 14802
[2023-11-29 02:50:59,620 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5123 GetRequests, 5111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:50:59,620 INFO  L413           NwaCegarLoop]: 12772 mSDtfsCounter, 33826 mSDsluCounter, 50247 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33826 SdHoareTripleChecker+Valid, 63019 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:50:59,621 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33826 Valid, 63019 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:50:59,632 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14802 states.
[2023-11-29 02:50:59,699 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14802 to 7912.
[2023-11-29 02:50:59,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7912 states, 7911 states have (on average 1.6604727594488686) internal successors, (13136), 7911 states have internal predecessors, (13136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:59,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 13136 transitions.
[2023-11-29 02:50:59,715 INFO  L78                 Accepts]: Start accepts. Automaton has 7912 states and 13136 transitions. Word has length 5114
[2023-11-29 02:50:59,718 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:50:59,718 INFO  L495      AbstractCegarLoop]: Abstraction has 7912 states and 13136 transitions.
[2023-11-29 02:50:59,719 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 683.5714285714286) internal successors, (4785), 7 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:50:59,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 7912 states and 13136 transitions.
[2023-11-29 02:50:59,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5116
[2023-11-29 02:50:59,826 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:50:59,827 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]
[2023-11-29 02:50:59,918 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0
[2023-11-29 02:51:00,027 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:00,028 INFO  L420      AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:00,029 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:00,031 INFO  L85        PathProgramCache]: Analyzing trace with hash 725636638, now seen corresponding path program 1 times
[2023-11-29 02:51:00,031 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:00,031 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020964988]
[2023-11-29 02:51:00,033 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:00,034 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:00,504 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:00,504 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991102342]
[2023-11-29 02:51:00,505 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:00,505 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:00,505 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:00,506 INFO  L229       MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:00,506 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2023-11-29 02:51:07,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:07,866 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30793 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:51:07,938 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:08,181 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked.
[2023-11-29 02:51:08,181 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:51:08,181 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:08,182 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020964988]
[2023-11-29 02:51:08,182 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:08,182 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991102342]
[2023-11-29 02:51:08,182 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991102342] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:51:08,182 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:51:08,184 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:51:08,184 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084422948]
[2023-11-29 02:51:08,184 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:08,187 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:51:08,187 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:08,190 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:51:08,190 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:51:08,192 INFO  L87              Difference]: Start difference. First operand 7912 states and 13136 transitions. Second operand  has 7 states, 7 states have (on average 684.0) internal successors, (4788), 7 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:08,736 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:51:08,737 INFO  L93              Difference]: Finished difference Result 21995 states and 36508 transitions.
[2023-11-29 02:51:08,737 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:51:08,738 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 684.0) internal successors, (4788), 7 states have internal predecessors, (4788), 0 states have call successors, (0), 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 5115
[2023-11-29 02:51:08,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:51:08,752 INFO  L225             Difference]: With dead ends: 21995
[2023-11-29 02:51:08,752 INFO  L226             Difference]: Without dead ends: 14803
[2023-11-29 02:51:08,758 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5124 GetRequests, 5112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:51:08,758 INFO  L413           NwaCegarLoop]: 12767 mSDtfsCounter, 33825 mSDsluCounter, 50232 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33825 SdHoareTripleChecker+Valid, 62999 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:51:08,758 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33825 Valid, 62999 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:51:08,772 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14803 states.
[2023-11-29 02:51:08,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14803 to 7914.
[2023-11-29 02:51:08,855 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7914 states, 7913 states have (on average 1.660305825856186) internal successors, (13138), 7913 states have internal predecessors, (13138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:08,864 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 13138 transitions.
[2023-11-29 02:51:08,864 INFO  L78                 Accepts]: Start accepts. Automaton has 7914 states and 13138 transitions. Word has length 5115
[2023-11-29 02:51:08,867 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:51:08,867 INFO  L495      AbstractCegarLoop]: Abstraction has 7914 states and 13138 transitions.
[2023-11-29 02:51:08,868 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 684.0) internal successors, (4788), 7 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:08,868 INFO  L276                IsEmpty]: Start isEmpty. Operand 7914 states and 13138 transitions.
[2023-11-29 02:51:08,977 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5117
[2023-11-29 02:51:08,977 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:51:08,978 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]
[2023-11-29 02:51:09,078 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0
[2023-11-29 02:51:09,179 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:09,179 INFO  L420      AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:09,179 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:09,181 INFO  L85        PathProgramCache]: Analyzing trace with hash 1120480462, now seen corresponding path program 1 times
[2023-11-29 02:51:09,181 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:09,181 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858832435]
[2023-11-29 02:51:09,182 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:09,182 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:09,685 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:09,685 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002018102]
[2023-11-29 02:51:09,686 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:09,686 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:09,686 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:09,687 INFO  L229       MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:09,688 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process
[2023-11-29 02:51:17,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:17,791 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30796 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:51:17,864 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:18,106 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2023-11-29 02:51:18,107 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:51:18,107 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:18,107 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858832435]
[2023-11-29 02:51:18,107 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:18,107 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002018102]
[2023-11-29 02:51:18,107 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002018102] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:51:18,107 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:51:18,109 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:51:18,109 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421172032]
[2023-11-29 02:51:18,109 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:18,111 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:51:18,111 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:18,113 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:51:18,113 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:51:18,115 INFO  L87              Difference]: Start difference. First operand 7914 states and 13138 transitions. Second operand  has 7 states, 7 states have (on average 684.7142857142857) internal successors, (4793), 7 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:18,607 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:51:18,607 INFO  L93              Difference]: Finished difference Result 22004 states and 36519 transitions.
[2023-11-29 02:51:18,608 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:51:18,609 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 684.7142857142857) internal successors, (4793), 7 states have internal predecessors, (4793), 0 states have call successors, (0), 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 5116
[2023-11-29 02:51:18,613 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:51:18,624 INFO  L225             Difference]: With dead ends: 22004
[2023-11-29 02:51:18,624 INFO  L226             Difference]: Without dead ends: 14807
[2023-11-29 02:51:18,629 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5125 GetRequests, 5113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:51:18,630 INFO  L413           NwaCegarLoop]: 12757 mSDtfsCounter, 33827 mSDsluCounter, 50202 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33827 SdHoareTripleChecker+Valid, 62959 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:51:18,630 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33827 Valid, 62959 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:51:18,645 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14807 states.
[2023-11-29 02:51:18,733 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14807 to 7919.
[2023-11-29 02:51:18,740 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7919 states, 7918 states have (on average 1.660141449861076) internal successors, (13145), 7918 states have internal predecessors, (13145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:18,748 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7919 states to 7919 states and 13145 transitions.
[2023-11-29 02:51:18,748 INFO  L78                 Accepts]: Start accepts. Automaton has 7919 states and 13145 transitions. Word has length 5116
[2023-11-29 02:51:18,751 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:51:18,751 INFO  L495      AbstractCegarLoop]: Abstraction has 7919 states and 13145 transitions.
[2023-11-29 02:51:18,752 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 684.7142857142857) internal successors, (4793), 7 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:18,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 7919 states and 13145 transitions.
[2023-11-29 02:51:18,861 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5118
[2023-11-29 02:51:18,861 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:51:18,862 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:51:18,956 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0
[2023-11-29 02:51:19,063 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:19,063 INFO  L420      AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:19,063 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:19,065 INFO  L85        PathProgramCache]: Analyzing trace with hash 239071186, now seen corresponding path program 1 times
[2023-11-29 02:51:19,065 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:19,065 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467293879]
[2023-11-29 02:51:19,066 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:19,066 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:19,613 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:19,614 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778319344]
[2023-11-29 02:51:19,615 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:19,616 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:19,616 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:19,616 INFO  L229       MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:19,617 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process
[2023-11-29 02:51:27,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:27,380 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30799 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:51:27,449 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:27,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked.
[2023-11-29 02:51:27,679 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:51:27,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:27,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467293879]
[2023-11-29 02:51:27,679 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:27,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778319344]
[2023-11-29 02:51:27,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778319344] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:51:27,679 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:51:27,681 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:51:27,681 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898007216]
[2023-11-29 02:51:27,681 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:27,683 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:51:27,683 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:27,685 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:51:27,685 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:51:27,687 INFO  L87              Difference]: Start difference. First operand 7919 states and 13145 transitions. Second operand  has 7 states, 7 states have (on average 685.4285714285714) internal successors, (4798), 7 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:28,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:51:28,150 INFO  L93              Difference]: Finished difference Result 22019 states and 36540 transitions.
[2023-11-29 02:51:28,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:51:28,152 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 685.4285714285714) internal successors, (4798), 7 states have internal predecessors, (4798), 0 states have call successors, (0), 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 5117
[2023-11-29 02:51:28,156 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:51:28,170 INFO  L225             Difference]: With dead ends: 22019
[2023-11-29 02:51:28,170 INFO  L226             Difference]: Without dead ends: 14811
[2023-11-29 02:51:28,176 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5126 GetRequests, 5114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:51:28,177 INFO  L413           NwaCegarLoop]: 12747 mSDtfsCounter, 33831 mSDsluCounter, 50172 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33831 SdHoareTripleChecker+Valid, 62919 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:51:28,177 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33831 Valid, 62919 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:51:28,193 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14811 states.
[2023-11-29 02:51:28,287 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14811 to 7924.
[2023-11-29 02:51:28,294 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7924 states, 7923 states have (on average 1.6599772813328284) internal successors, (13152), 7923 states have internal predecessors, (13152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:28,305 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13152 transitions.
[2023-11-29 02:51:28,306 INFO  L78                 Accepts]: Start accepts. Automaton has 7924 states and 13152 transitions. Word has length 5117
[2023-11-29 02:51:28,309 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:51:28,309 INFO  L495      AbstractCegarLoop]: Abstraction has 7924 states and 13152 transitions.
[2023-11-29 02:51:28,310 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 685.4285714285714) internal successors, (4798), 7 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:28,310 INFO  L276                IsEmpty]: Start isEmpty. Operand 7924 states and 13152 transitions.
[2023-11-29 02:51:28,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5119
[2023-11-29 02:51:28,424 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:51:28,425 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:51:28,519 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0
[2023-11-29 02:51:28,625 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:28,626 INFO  L420      AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:28,626 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:28,627 INFO  L85        PathProgramCache]: Analyzing trace with hash 1114044954, now seen corresponding path program 1 times
[2023-11-29 02:51:28,627 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:28,627 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95173709]
[2023-11-29 02:51:28,627 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:28,627 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:29,103 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:29,103 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244605990]
[2023-11-29 02:51:29,104 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:29,104 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:29,104 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:29,105 INFO  L229       MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:29,106 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process
[2023-11-29 02:51:36,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:36,892 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30802 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:51:36,968 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:37,196 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked.
[2023-11-29 02:51:37,196 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:51:37,196 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:37,197 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95173709]
[2023-11-29 02:51:37,197 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:37,197 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244605990]
[2023-11-29 02:51:37,197 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [244605990] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:51:37,197 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:51:37,199 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:51:37,199 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034704118]
[2023-11-29 02:51:37,199 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:37,201 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:51:37,201 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:37,203 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:51:37,204 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:51:37,205 INFO  L87              Difference]: Start difference. First operand 7924 states and 13152 transitions. Second operand  has 7 states, 7 states have (on average 686.1428571428571) internal successors, (4803), 7 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:37,714 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:51:37,714 INFO  L93              Difference]: Finished difference Result 22034 states and 36561 transitions.
[2023-11-29 02:51:37,715 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:51:37,716 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 686.1428571428571) internal successors, (4803), 7 states have internal predecessors, (4803), 0 states have call successors, (0), 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 5118
[2023-11-29 02:51:37,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:51:37,733 INFO  L225             Difference]: With dead ends: 22034
[2023-11-29 02:51:37,733 INFO  L226             Difference]: Without dead ends: 14815
[2023-11-29 02:51:37,740 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5127 GetRequests, 5115 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:51:37,740 INFO  L413           NwaCegarLoop]: 12737 mSDtfsCounter, 33835 mSDsluCounter, 50142 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33835 SdHoareTripleChecker+Valid, 62879 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:51:37,740 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33835 Valid, 62879 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:51:37,756 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14815 states.
[2023-11-29 02:51:37,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14815 to 7929.
[2023-11-29 02:51:37,855 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7929 states, 7928 states have (on average 1.6598133198789102) internal successors, (13159), 7928 states have internal predecessors, (13159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:37,865 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7929 states to 7929 states and 13159 transitions.
[2023-11-29 02:51:37,866 INFO  L78                 Accepts]: Start accepts. Automaton has 7929 states and 13159 transitions. Word has length 5118
[2023-11-29 02:51:37,869 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:51:37,869 INFO  L495      AbstractCegarLoop]: Abstraction has 7929 states and 13159 transitions.
[2023-11-29 02:51:37,871 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 686.1428571428571) internal successors, (4803), 7 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:37,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 7929 states and 13159 transitions.
[2023-11-29 02:51:37,992 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5120
[2023-11-29 02:51:37,992 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:51:37,993 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]
[2023-11-29 02:51:38,084 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0
[2023-11-29 02:51:38,193 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:38,194 INFO  L420      AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:38,194 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:38,195 INFO  L85        PathProgramCache]: Analyzing trace with hash 1560013702, now seen corresponding path program 1 times
[2023-11-29 02:51:38,195 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:38,195 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760917801]
[2023-11-29 02:51:38,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:38,195 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:38,706 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:38,707 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592285567]
[2023-11-29 02:51:38,708 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:38,708 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:38,708 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:38,709 INFO  L229       MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:38,710 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process
[2023-11-29 02:51:46,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:46,454 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30805 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 02:51:46,523 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:46,929 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2023-11-29 02:51:46,930 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:51:46,930 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:46,930 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760917801]
[2023-11-29 02:51:46,930 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:46,930 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592285567]
[2023-11-29 02:51:46,930 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [592285567] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:51:46,930 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:51:46,932 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:51:46,932 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276032874]
[2023-11-29 02:51:46,932 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:46,935 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:51:46,935 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:46,937 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:51:46,937 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:51:46,939 INFO  L87              Difference]: Start difference. First operand 7929 states and 13159 transitions. Second operand  has 8 states, 8 states have (on average 601.0) internal successors, (4808), 8 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:47,514 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:51:47,514 INFO  L93              Difference]: Finished difference Result 22051 states and 36584 transitions.
[2023-11-29 02:51:47,514 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-11-29 02:51:47,516 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 601.0) internal successors, (4808), 8 states have internal predecessors, (4808), 0 states have call successors, (0), 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 5119
[2023-11-29 02:51:47,519 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:51:47,530 INFO  L225             Difference]: With dead ends: 22051
[2023-11-29 02:51:47,530 INFO  L226             Difference]: Without dead ends: 14821
[2023-11-29 02:51:47,536 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5129 GetRequests, 5115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2023-11-29 02:51:47,536 INFO  L413           NwaCegarLoop]: 12726 mSDtfsCounter, 33838 mSDsluCounter, 62828 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33838 SdHoareTripleChecker+Valid, 75554 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:51:47,537 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33838 Valid, 75554 Invalid, 74 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:51:47,550 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14821 states.
[2023-11-29 02:51:47,628 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14821 to 7934.
[2023-11-29 02:51:47,635 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7934 states, 7933 states have (on average 1.6596495651077776) internal successors, (13166), 7933 states have internal predecessors, (13166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:47,643 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7934 states to 7934 states and 13166 transitions.
[2023-11-29 02:51:47,644 INFO  L78                 Accepts]: Start accepts. Automaton has 7934 states and 13166 transitions. Word has length 5119
[2023-11-29 02:51:47,646 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:51:47,646 INFO  L495      AbstractCegarLoop]: Abstraction has 7934 states and 13166 transitions.
[2023-11-29 02:51:47,648 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 601.0) internal successors, (4808), 8 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:47,648 INFO  L276                IsEmpty]: Start isEmpty. Operand 7934 states and 13166 transitions.
[2023-11-29 02:51:47,756 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5121
[2023-11-29 02:51:47,756 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:51:47,758 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]
[2023-11-29 02:51:47,847 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0
[2023-11-29 02:51:47,958 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65
[2023-11-29 02:51:47,959 INFO  L420      AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:47,959 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:47,959 INFO  L85        PathProgramCache]: Analyzing trace with hash -718142106, now seen corresponding path program 1 times
[2023-11-29 02:51:47,959 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:47,959 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949560436]
[2023-11-29 02:51:47,960 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:47,960 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:48,438 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:48,438 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882987915]
[2023-11-29 02:51:48,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:48,439 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:48,439 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:48,440 INFO  L229       MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:48,441 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process
[2023-11-29 02:51:56,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:51:56,490 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30808 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:51:56,558 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:51:56,784 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked.
[2023-11-29 02:51:56,784 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:51:56,784 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:51:56,784 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949560436]
[2023-11-29 02:51:56,784 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:51:56,784 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882987915]
[2023-11-29 02:51:56,785 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882987915] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:51:56,785 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:51:56,786 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:51:56,786 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081742122]
[2023-11-29 02:51:56,786 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:51:56,788 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:51:56,788 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:51:56,790 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:51:56,790 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:51:56,791 INFO  L87              Difference]: Start difference. First operand 7934 states and 13166 transitions. Second operand  has 7 states, 7 states have (on average 687.5714285714286) internal successors, (4813), 7 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:57,245 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:51:57,245 INFO  L93              Difference]: Finished difference Result 22064 states and 36603 transitions.
[2023-11-29 02:51:57,246 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:51:57,247 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 687.5714285714286) internal successors, (4813), 7 states have internal predecessors, (4813), 0 states have call successors, (0), 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 5120
[2023-11-29 02:51:57,250 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:51:57,260 INFO  L225             Difference]: With dead ends: 22064
[2023-11-29 02:51:57,261 INFO  L226             Difference]: Without dead ends: 14823
[2023-11-29 02:51:57,266 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5129 GetRequests, 5117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:51:57,266 INFO  L413           NwaCegarLoop]: 12717 mSDtfsCounter, 33843 mSDsluCounter, 50082 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33843 SdHoareTripleChecker+Valid, 62799 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:51:57,267 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33843 Valid, 62799 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:51:57,279 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14823 states.
[2023-11-29 02:51:57,349 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14823 to 7939.
[2023-11-29 02:51:57,356 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7939 states, 7938 states have (on average 1.6594860166288739) internal successors, (13173), 7938 states have internal predecessors, (13173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:57,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 13173 transitions.
[2023-11-29 02:51:57,364 INFO  L78                 Accepts]: Start accepts. Automaton has 7939 states and 13173 transitions. Word has length 5120
[2023-11-29 02:51:57,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:51:57,367 INFO  L495      AbstractCegarLoop]: Abstraction has 7939 states and 13173 transitions.
[2023-11-29 02:51:57,367 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 687.5714285714286) internal successors, (4813), 7 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:51:57,368 INFO  L276                IsEmpty]: Start isEmpty. Operand 7939 states and 13173 transitions.
[2023-11-29 02:51:57,474 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5122
[2023-11-29 02:51:57,474 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:51:57,475 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]
[2023-11-29 02:51:57,557 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0
[2023-11-29 02:51:57,675 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:57,676 INFO  L420      AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:51:57,676 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:51:57,677 INFO  L85        PathProgramCache]: Analyzing trace with hash -634320582, now seen corresponding path program 1 times
[2023-11-29 02:51:57,677 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:51:57,677 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383421804]
[2023-11-29 02:51:57,677 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:57,677 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:51:58,161 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:51:58,161 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056295949]
[2023-11-29 02:51:58,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:51:58,162 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:51:58,162 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:51:58,163 INFO  L229       MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:51:58,164 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process
[2023-11-29 02:52:05,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:52:05,651 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30811 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:52:05,720 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:52:05,961 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked.
[2023-11-29 02:52:05,962 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:52:05,962 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:52:05,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383421804]
[2023-11-29 02:52:05,962 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:52:05,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056295949]
[2023-11-29 02:52:05,962 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056295949] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:52:05,962 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:52:05,963 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:52:05,963 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037442230]
[2023-11-29 02:52:05,963 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:52:05,965 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:52:05,966 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:52:05,968 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:52:05,968 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:52:05,969 INFO  L87              Difference]: Start difference. First operand 7939 states and 13173 transitions. Second operand  has 7 states, 7 states have (on average 688.2857142857143) internal successors, (4818), 7 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:06,459 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:52:06,459 INFO  L93              Difference]: Finished difference Result 22079 states and 36624 transitions.
[2023-11-29 02:52:06,460 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:52:06,461 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 688.2857142857143) internal successors, (4818), 7 states have internal predecessors, (4818), 0 states have call successors, (0), 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 5121
[2023-11-29 02:52:06,464 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:52:06,474 INFO  L225             Difference]: With dead ends: 22079
[2023-11-29 02:52:06,475 INFO  L226             Difference]: Without dead ends: 14827
[2023-11-29 02:52:06,480 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5130 GetRequests, 5118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:52:06,480 INFO  L413           NwaCegarLoop]: 12707 mSDtfsCounter, 33847 mSDsluCounter, 50052 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33847 SdHoareTripleChecker+Valid, 62759 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:52:06,480 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33847 Valid, 62759 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:52:06,493 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14827 states.
[2023-11-29 02:52:06,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14827 to 7944.
[2023-11-29 02:52:06,569 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7944 states, 7943 states have (on average 1.659322674052625) internal successors, (13180), 7943 states have internal predecessors, (13180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:06,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7944 states to 7944 states and 13180 transitions.
[2023-11-29 02:52:06,577 INFO  L78                 Accepts]: Start accepts. Automaton has 7944 states and 13180 transitions. Word has length 5121
[2023-11-29 02:52:06,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:52:06,580 INFO  L495      AbstractCegarLoop]: Abstraction has 7944 states and 13180 transitions.
[2023-11-29 02:52:06,581 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 688.2857142857143) internal successors, (4818), 7 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:06,581 INFO  L276                IsEmpty]: Start isEmpty. Operand 7944 states and 13180 transitions.
[2023-11-29 02:52:06,687 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5123
[2023-11-29 02:52:06,687 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:52:06,688 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]
[2023-11-29 02:52:06,770 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0
[2023-11-29 02:52:06,889 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:06,889 INFO  L420      AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:52:06,889 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:52:06,890 INFO  L85        PathProgramCache]: Analyzing trace with hash -2100457806, now seen corresponding path program 1 times
[2023-11-29 02:52:06,890 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:52:06,890 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4912698]
[2023-11-29 02:52:06,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:06,892 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:52:07,353 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:52:07,353 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106004949]
[2023-11-29 02:52:07,354 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:07,354 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:07,354 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:52:07,355 INFO  L229       MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:52:07,355 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process
[2023-11-29 02:52:14,823 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:52:15,019 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30814 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:52:15,112 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:52:15,343 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked.
[2023-11-29 02:52:15,343 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:52:15,343 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:52:15,343 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4912698]
[2023-11-29 02:52:15,343 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:52:15,343 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106004949]
[2023-11-29 02:52:15,343 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106004949] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:52:15,343 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:52:15,344 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:52:15,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000105230]
[2023-11-29 02:52:15,345 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:52:15,347 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:52:15,347 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:52:15,349 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:52:15,349 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:52:15,350 INFO  L87              Difference]: Start difference. First operand 7944 states and 13180 transitions. Second operand  has 7 states, 7 states have (on average 689.0) internal successors, (4823), 7 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:15,777 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:52:15,777 INFO  L93              Difference]: Finished difference Result 22094 states and 36645 transitions.
[2023-11-29 02:52:15,777 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:52:15,779 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 689.0) internal successors, (4823), 7 states have internal predecessors, (4823), 0 states have call successors, (0), 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 5122
[2023-11-29 02:52:15,782 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:52:15,792 INFO  L225             Difference]: With dead ends: 22094
[2023-11-29 02:52:15,792 INFO  L226             Difference]: Without dead ends: 14831
[2023-11-29 02:52:15,798 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5131 GetRequests, 5119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:52:15,798 INFO  L413           NwaCegarLoop]: 12697 mSDtfsCounter, 33851 mSDsluCounter, 50022 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33851 SdHoareTripleChecker+Valid, 62719 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:52:15,798 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33851 Valid, 62719 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:52:15,811 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14831 states.
[2023-11-29 02:52:15,883 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14831 to 7949.
[2023-11-29 02:52:15,889 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7949 states, 7948 states have (on average 1.659159536990438) internal successors, (13187), 7948 states have internal predecessors, (13187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:15,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7949 states to 7949 states and 13187 transitions.
[2023-11-29 02:52:15,897 INFO  L78                 Accepts]: Start accepts. Automaton has 7949 states and 13187 transitions. Word has length 5122
[2023-11-29 02:52:15,899 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:52:15,900 INFO  L495      AbstractCegarLoop]: Abstraction has 7949 states and 13187 transitions.
[2023-11-29 02:52:15,901 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 689.0) internal successors, (4823), 7 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:15,901 INFO  L276                IsEmpty]: Start isEmpty. Operand 7949 states and 13187 transitions.
[2023-11-29 02:52:16,008 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5124
[2023-11-29 02:52:16,008 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:52:16,009 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]
[2023-11-29 02:52:16,089 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0
[2023-11-29 02:52:16,209 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:16,210 INFO  L420      AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:52:16,210 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:52:16,211 INFO  L85        PathProgramCache]: Analyzing trace with hash 2094794990, now seen corresponding path program 1 times
[2023-11-29 02:52:16,211 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:52:16,211 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166683255]
[2023-11-29 02:52:16,211 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:16,211 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:52:16,662 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:52:16,663 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542914763]
[2023-11-29 02:52:16,663 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:16,664 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:16,664 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:52:16,664 INFO  L229       MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:52:16,665 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process
[2023-11-29 02:52:24,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:52:24,430 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30817 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:52:24,495 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:52:24,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked.
[2023-11-29 02:52:24,724 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:52:24,724 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:52:24,724 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166683255]
[2023-11-29 02:52:24,724 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:52:24,724 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542914763]
[2023-11-29 02:52:24,724 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542914763] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:52:24,724 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:52:24,726 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:52:24,726 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702995356]
[2023-11-29 02:52:24,726 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:52:24,729 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:52:24,729 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:52:24,731 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:52:24,731 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:52:24,732 INFO  L87              Difference]: Start difference. First operand 7949 states and 13187 transitions. Second operand  has 7 states, 7 states have (on average 689.7142857142857) internal successors, (4828), 7 states have internal predecessors, (4828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:25,193 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:52:25,193 INFO  L93              Difference]: Finished difference Result 22109 states and 36666 transitions.
[2023-11-29 02:52:25,193 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:52:25,194 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 689.7142857142857) internal successors, (4828), 7 states have internal predecessors, (4828), 0 states have call successors, (0), 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 5123
[2023-11-29 02:52:25,197 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:52:25,208 INFO  L225             Difference]: With dead ends: 22109
[2023-11-29 02:52:25,208 INFO  L226             Difference]: Without dead ends: 14835
[2023-11-29 02:52:25,213 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5132 GetRequests, 5120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:52:25,214 INFO  L413           NwaCegarLoop]: 12687 mSDtfsCounter, 33855 mSDsluCounter, 49992 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33855 SdHoareTripleChecker+Valid, 62679 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:52:25,214 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33855 Valid, 62679 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:52:25,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14835 states.
[2023-11-29 02:52:25,311 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14835 to 7954.
[2023-11-29 02:52:25,318 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7954 states, 7953 states have (on average 1.6589966050546963) internal successors, (13194), 7953 states have internal predecessors, (13194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:25,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7954 states to 7954 states and 13194 transitions.
[2023-11-29 02:52:25,329 INFO  L78                 Accepts]: Start accepts. Automaton has 7954 states and 13194 transitions. Word has length 5123
[2023-11-29 02:52:25,332 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:52:25,332 INFO  L495      AbstractCegarLoop]: Abstraction has 7954 states and 13194 transitions.
[2023-11-29 02:52:25,334 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 689.7142857142857) internal successors, (4828), 7 states have internal predecessors, (4828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:25,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 7954 states and 13194 transitions.
[2023-11-29 02:52:25,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5125
[2023-11-29 02:52:25,446 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:52:25,446 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]
[2023-11-29 02:52:25,529 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0
[2023-11-29 02:52:25,647 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:25,647 INFO  L420      AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:52:25,647 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:52:25,648 INFO  L85        PathProgramCache]: Analyzing trace with hash 1285346814, now seen corresponding path program 1 times
[2023-11-29 02:52:25,648 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:52:25,648 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972843917]
[2023-11-29 02:52:25,648 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:25,648 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:52:26,103 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:52:26,104 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520295546]
[2023-11-29 02:52:26,104 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:26,105 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:26,105 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:52:26,105 INFO  L229       MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:52:26,106 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process
[2023-11-29 02:52:33,781 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:52:33,994 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30820 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:52:34,065 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:52:34,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked.
[2023-11-29 02:52:34,303 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:52:34,304 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:52:34,304 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972843917]
[2023-11-29 02:52:34,304 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:52:34,304 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520295546]
[2023-11-29 02:52:34,304 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520295546] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:52:34,304 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:52:34,306 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:52:34,306 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189317520]
[2023-11-29 02:52:34,306 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:52:34,309 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:52:34,309 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:52:34,311 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:52:34,311 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:52:34,312 INFO  L87              Difference]: Start difference. First operand 7954 states and 13194 transitions. Second operand  has 7 states, 7 states have (on average 690.4285714285714) internal successors, (4833), 7 states have internal predecessors, (4833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:34,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:52:34,778 INFO  L93              Difference]: Finished difference Result 22124 states and 36687 transitions.
[2023-11-29 02:52:34,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:52:34,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 690.4285714285714) internal successors, (4833), 7 states have internal predecessors, (4833), 0 states have call successors, (0), 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 5124
[2023-11-29 02:52:34,783 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:52:34,794 INFO  L225             Difference]: With dead ends: 22124
[2023-11-29 02:52:34,794 INFO  L226             Difference]: Without dead ends: 14839
[2023-11-29 02:52:34,800 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5133 GetRequests, 5121 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:52:34,800 INFO  L413           NwaCegarLoop]: 12677 mSDtfsCounter, 33859 mSDsluCounter, 49962 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33859 SdHoareTripleChecker+Valid, 62639 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:52:34,801 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33859 Valid, 62639 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:52:34,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14839 states.
[2023-11-29 02:52:34,889 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14839 to 7959.
[2023-11-29 02:52:34,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7959 states, 7958 states have (on average 1.6588338778587586) internal successors, (13201), 7958 states have internal predecessors, (13201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:34,905 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 13201 transitions.
[2023-11-29 02:52:34,905 INFO  L78                 Accepts]: Start accepts. Automaton has 7959 states and 13201 transitions. Word has length 5124
[2023-11-29 02:52:34,908 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:52:34,908 INFO  L495      AbstractCegarLoop]: Abstraction has 7959 states and 13201 transitions.
[2023-11-29 02:52:34,909 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 690.4285714285714) internal successors, (4833), 7 states have internal predecessors, (4833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:34,909 INFO  L276                IsEmpty]: Start isEmpty. Operand 7959 states and 13201 transitions.
[2023-11-29 02:52:35,016 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5126
[2023-11-29 02:52:35,017 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:52:35,018 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]
[2023-11-29 02:52:35,108 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0
[2023-11-29 02:52:35,218 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:35,219 INFO  L420      AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:52:35,219 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:52:35,219 INFO  L85        PathProgramCache]: Analyzing trace with hash -1808160094, now seen corresponding path program 1 times
[2023-11-29 02:52:35,219 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:52:35,220 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38312097]
[2023-11-29 02:52:35,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:35,220 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:52:35,807 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:52:35,807 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257528282]
[2023-11-29 02:52:35,809 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:35,809 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:35,810 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:52:35,810 INFO  L229       MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:52:35,811 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process
[2023-11-29 02:52:43,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:52:43,650 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30823 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:52:43,720 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:52:43,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2023-11-29 02:52:43,971 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:52:43,972 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:52:43,972 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38312097]
[2023-11-29 02:52:43,972 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:52:43,972 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257528282]
[2023-11-29 02:52:43,972 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257528282] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:52:43,972 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:52:43,974 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:52:43,974 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689446500]
[2023-11-29 02:52:43,974 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:52:43,977 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:52:43,977 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:52:43,980 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:52:43,980 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:52:43,981 INFO  L87              Difference]: Start difference. First operand 7959 states and 13201 transitions. Second operand  has 7 states, 7 states have (on average 691.1428571428571) internal successors, (4838), 7 states have internal predecessors, (4838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:44,599 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:52:44,599 INFO  L93              Difference]: Finished difference Result 22139 states and 36708 transitions.
[2023-11-29 02:52:44,599 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:52:44,600 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 691.1428571428571) internal successors, (4838), 7 states have internal predecessors, (4838), 0 states have call successors, (0), 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 5125
[2023-11-29 02:52:44,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:52:44,613 INFO  L225             Difference]: With dead ends: 22139
[2023-11-29 02:52:44,613 INFO  L226             Difference]: Without dead ends: 14843
[2023-11-29 02:52:44,618 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5134 GetRequests, 5122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:52:44,618 INFO  L413           NwaCegarLoop]: 12667 mSDtfsCounter, 33863 mSDsluCounter, 49932 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33863 SdHoareTripleChecker+Valid, 62599 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:52:44,618 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33863 Valid, 62599 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:52:44,631 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14843 states.
[2023-11-29 02:52:44,705 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14843 to 7964.
[2023-11-29 02:52:44,712 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7964 states, 7963 states have (on average 1.6586713550169534) internal successors, (13208), 7963 states have internal predecessors, (13208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:44,720 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7964 states to 7964 states and 13208 transitions.
[2023-11-29 02:52:44,720 INFO  L78                 Accepts]: Start accepts. Automaton has 7964 states and 13208 transitions. Word has length 5125
[2023-11-29 02:52:44,723 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:52:44,723 INFO  L495      AbstractCegarLoop]: Abstraction has 7964 states and 13208 transitions.
[2023-11-29 02:52:44,724 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 691.1428571428571) internal successors, (4838), 7 states have internal predecessors, (4838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:44,724 INFO  L276                IsEmpty]: Start isEmpty. Operand 7964 states and 13208 transitions.
[2023-11-29 02:52:44,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5127
[2023-11-29 02:52:44,832 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:52:44,833 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]
[2023-11-29 02:52:44,920 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0
[2023-11-29 02:52:45,033 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:45,034 INFO  L420      AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:52:45,034 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:52:45,034 INFO  L85        PathProgramCache]: Analyzing trace with hash -1983702198, now seen corresponding path program 1 times
[2023-11-29 02:52:45,034 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:52:45,035 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070279768]
[2023-11-29 02:52:45,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:45,036 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:52:45,558 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:52:45,558 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444881219]
[2023-11-29 02:52:45,559 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:45,559 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:45,559 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:52:45,560 INFO  L229       MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:52:45,561 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process
[2023-11-29 02:52:52,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:52:53,059 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30826 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:52:53,125 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:52:53,358 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked.
[2023-11-29 02:52:53,358 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:52:53,358 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:52:53,358 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070279768]
[2023-11-29 02:52:53,358 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:52:53,359 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444881219]
[2023-11-29 02:52:53,359 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [444881219] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:52:53,359 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:52:53,361 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:52:53,361 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223279192]
[2023-11-29 02:52:53,361 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:52:53,364 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:52:53,364 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:52:53,366 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:52:53,366 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:52:53,367 INFO  L87              Difference]: Start difference. First operand 7964 states and 13208 transitions. Second operand  has 7 states, 7 states have (on average 691.8571428571429) internal successors, (4843), 7 states have internal predecessors, (4843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:53,804 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:52:53,804 INFO  L93              Difference]: Finished difference Result 22154 states and 36729 transitions.
[2023-11-29 02:52:53,804 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:52:53,805 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 691.8571428571429) internal successors, (4843), 7 states have internal predecessors, (4843), 0 states have call successors, (0), 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 5126
[2023-11-29 02:52:53,809 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:52:53,820 INFO  L225             Difference]: With dead ends: 22154
[2023-11-29 02:52:53,820 INFO  L226             Difference]: Without dead ends: 14847
[2023-11-29 02:52:53,825 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5135 GetRequests, 5123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:52:53,825 INFO  L413           NwaCegarLoop]: 12657 mSDtfsCounter, 33867 mSDsluCounter, 49902 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33867 SdHoareTripleChecker+Valid, 62559 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:52:53,825 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33867 Valid, 62559 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:52:53,837 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14847 states.
[2023-11-29 02:52:53,909 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14847 to 7969.
[2023-11-29 02:52:53,916 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7969 states, 7968 states have (on average 1.6585090361445782) internal successors, (13215), 7968 states have internal predecessors, (13215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:53,927 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7969 states to 7969 states and 13215 transitions.
[2023-11-29 02:52:53,927 INFO  L78                 Accepts]: Start accepts. Automaton has 7969 states and 13215 transitions. Word has length 5126
[2023-11-29 02:52:53,930 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:52:53,930 INFO  L495      AbstractCegarLoop]: Abstraction has 7969 states and 13215 transitions.
[2023-11-29 02:52:53,931 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 691.8571428571429) internal successors, (4843), 7 states have internal predecessors, (4843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:52:53,931 INFO  L276                IsEmpty]: Start isEmpty. Operand 7969 states and 13215 transitions.
[2023-11-29 02:52:54,038 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5128
[2023-11-29 02:52:54,039 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:52:54,039 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 02:52:54,122 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0
[2023-11-29 02:52:54,240 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72
[2023-11-29 02:52:54,240 INFO  L420      AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:52:54,240 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:52:54,241 INFO  L85        PathProgramCache]: Analyzing trace with hash -339300778, now seen corresponding path program 1 times
[2023-11-29 02:52:54,241 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:52:54,242 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482646036]
[2023-11-29 02:52:54,242 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:54,243 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:52:54,718 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:52:54,718 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935652015]
[2023-11-29 02:52:54,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:52:54,719 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:52:54,719 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:52:54,720 INFO  L229       MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:52:54,721 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process
[2023-11-29 02:53:02,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:02,382 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30829 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 02:53:02,459 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:53:02,695 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked.
[2023-11-29 02:53:02,696 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:53:02,696 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:53:02,696 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482646036]
[2023-11-29 02:53:02,696 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:53:02,696 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935652015]
[2023-11-29 02:53:02,696 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [935652015] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:53:02,696 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:53:02,698 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:53:02,698 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058332943]
[2023-11-29 02:53:02,698 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:53:02,701 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:53:02,701 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:53:02,704 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:53:02,704 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:53:02,705 INFO  L87              Difference]: Start difference. First operand 7969 states and 13215 transitions. Second operand  has 8 states, 8 states have (on average 605.75) internal successors, (4846), 8 states have internal predecessors, (4846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:03,220 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:03,220 INFO  L93              Difference]: Finished difference Result 22166 states and 36745 transitions.
[2023-11-29 02:53:03,221 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:53:03,222 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 605.75) internal successors, (4846), 8 states have internal predecessors, (4846), 0 states have call successors, (0), 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 5127
[2023-11-29 02:53:03,225 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:03,235 INFO  L225             Difference]: With dead ends: 22166
[2023-11-29 02:53:03,235 INFO  L226             Difference]: Without dead ends: 14848
[2023-11-29 02:53:03,240 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5136 GetRequests, 5123 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 02:53:03,241 INFO  L413           NwaCegarLoop]: 12652 mSDtfsCounter, 33868 mSDsluCounter, 62536 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33868 SdHoareTripleChecker+Valid, 75188 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:03,241 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33868 Valid, 75188 Invalid, 59 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:53:03,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14848 states.
[2023-11-29 02:53:03,323 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14848 to 7971.
[2023-11-29 02:53:03,330 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7971 states, 7970 states have (on average 1.6583437892095358) internal successors, (13217), 7970 states have internal predecessors, (13217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:03,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7971 states to 7971 states and 13217 transitions.
[2023-11-29 02:53:03,338 INFO  L78                 Accepts]: Start accepts. Automaton has 7971 states and 13217 transitions. Word has length 5127
[2023-11-29 02:53:03,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:03,340 INFO  L495      AbstractCegarLoop]: Abstraction has 7971 states and 13217 transitions.
[2023-11-29 02:53:03,341 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 605.75) internal successors, (4846), 8 states have internal predecessors, (4846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:03,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 7971 states and 13217 transitions.
[2023-11-29 02:53:03,448 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5129
[2023-11-29 02:53:03,448 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:53:03,449 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 02:53:03,533 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0
[2023-11-29 02:53:03,649 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73
[2023-11-29 02:53:03,650 INFO  L420      AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:53:03,650 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:53:03,651 INFO  L85        PathProgramCache]: Analyzing trace with hash -585599376, now seen corresponding path program 1 times
[2023-11-29 02:53:03,651 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:53:03,651 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621295289]
[2023-11-29 02:53:03,651 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:03,651 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:53:04,224 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:53:04,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116782922]
[2023-11-29 02:53:04,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:04,225 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:04,225 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:53:04,226 INFO  L229       MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:53:04,227 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process
[2023-11-29 02:53:11,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:11,656 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30832 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:53:11,722 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:53:11,954 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked.
[2023-11-29 02:53:11,954 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:53:11,954 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:53:11,954 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621295289]
[2023-11-29 02:53:11,954 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:53:11,954 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116782922]
[2023-11-29 02:53:11,954 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116782922] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:53:11,954 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:53:11,956 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:53:11,956 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073000690]
[2023-11-29 02:53:11,956 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:53:11,958 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:53:11,958 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:53:11,960 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:53:11,960 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:53:11,961 INFO  L87              Difference]: Start difference. First operand 7971 states and 13217 transitions. Second operand  has 7 states, 7 states have (on average 693.0) internal successors, (4851), 7 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:12,399 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:12,399 INFO  L93              Difference]: Finished difference Result 22175 states and 36756 transitions.
[2023-11-29 02:53:12,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:53:12,400 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 693.0) internal successors, (4851), 7 states have internal predecessors, (4851), 0 states have call successors, (0), 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 5128
[2023-11-29 02:53:12,403 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:12,414 INFO  L225             Difference]: With dead ends: 22175
[2023-11-29 02:53:12,414 INFO  L226             Difference]: Without dead ends: 14852
[2023-11-29 02:53:12,419 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5137 GetRequests, 5125 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:53:12,420 INFO  L413           NwaCegarLoop]: 12642 mSDtfsCounter, 33870 mSDsluCounter, 49857 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33870 SdHoareTripleChecker+Valid, 62499 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:12,420 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33870 Valid, 62499 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:53:12,433 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14852 states.
[2023-11-29 02:53:12,504 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14852 to 7976.
[2023-11-29 02:53:12,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7976 states, 7975 states have (on average 1.6581818181818182) internal successors, (13224), 7975 states have internal predecessors, (13224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:12,519 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 13224 transitions.
[2023-11-29 02:53:12,519 INFO  L78                 Accepts]: Start accepts. Automaton has 7976 states and 13224 transitions. Word has length 5128
[2023-11-29 02:53:12,522 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:12,522 INFO  L495      AbstractCegarLoop]: Abstraction has 7976 states and 13224 transitions.
[2023-11-29 02:53:12,523 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 693.0) internal successors, (4851), 7 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:12,523 INFO  L276                IsEmpty]: Start isEmpty. Operand 7976 states and 13224 transitions.
[2023-11-29 02:53:12,629 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5130
[2023-11-29 02:53:12,630 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:53:12,631 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 02:53:12,712 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0
[2023-11-29 02:53:12,831 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74
[2023-11-29 02:53:12,831 INFO  L420      AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:53:12,831 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:53:12,832 INFO  L85        PathProgramCache]: Analyzing trace with hash 221318348, now seen corresponding path program 1 times
[2023-11-29 02:53:12,832 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:53:12,832 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479563954]
[2023-11-29 02:53:12,833 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:12,833 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:53:13,296 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:53:13,296 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738702556]
[2023-11-29 02:53:13,297 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:13,297 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:13,297 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:53:13,298 INFO  L229       MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:53:13,299 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process
[2023-11-29 02:53:20,688 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:20,869 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30836 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:53:20,932 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:53:21,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2023-11-29 02:53:21,164 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:53:21,164 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:53:21,164 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479563954]
[2023-11-29 02:53:21,164 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:53:21,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738702556]
[2023-11-29 02:53:21,165 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738702556] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:53:21,165 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:53:21,166 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:53:21,167 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725572440]
[2023-11-29 02:53:21,167 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:53:21,169 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:53:21,169 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:53:21,171 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:53:21,171 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:53:21,172 INFO  L87              Difference]: Start difference. First operand 7976 states and 13224 transitions. Second operand  has 7 states, 7 states have (on average 693.7142857142857) internal successors, (4856), 7 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:21,618 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:21,618 INFO  L93              Difference]: Finished difference Result 22190 states and 36777 transitions.
[2023-11-29 02:53:21,619 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:53:21,620 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 693.7142857142857) internal successors, (4856), 7 states have internal predecessors, (4856), 0 states have call successors, (0), 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 5129
[2023-11-29 02:53:21,623 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:21,633 INFO  L225             Difference]: With dead ends: 22190
[2023-11-29 02:53:21,634 INFO  L226             Difference]: Without dead ends: 14856
[2023-11-29 02:53:21,639 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5138 GetRequests, 5126 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:53:21,639 INFO  L413           NwaCegarLoop]: 12632 mSDtfsCounter, 33874 mSDsluCounter, 49827 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33874 SdHoareTripleChecker+Valid, 62459 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:21,639 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33874 Valid, 62459 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:53:21,654 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14856 states.
[2023-11-29 02:53:21,726 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14856 to 7981.
[2023-11-29 02:53:21,732 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7981 states, 7980 states have (on average 1.6580200501253133) internal successors, (13231), 7980 states have internal predecessors, (13231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:21,740 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7981 states to 7981 states and 13231 transitions.
[2023-11-29 02:53:21,740 INFO  L78                 Accepts]: Start accepts. Automaton has 7981 states and 13231 transitions. Word has length 5129
[2023-11-29 02:53:21,742 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:21,743 INFO  L495      AbstractCegarLoop]: Abstraction has 7981 states and 13231 transitions.
[2023-11-29 02:53:21,743 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 693.7142857142857) internal successors, (4856), 7 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:21,744 INFO  L276                IsEmpty]: Start isEmpty. Operand 7981 states and 13231 transitions.
[2023-11-29 02:53:21,852 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5131
[2023-11-29 02:53:21,852 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:53:21,853 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 02:53:21,931 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0
[2023-11-29 02:53:22,053 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75
[2023-11-29 02:53:22,053 INFO  L420      AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:53:22,054 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:53:22,054 INFO  L85        PathProgramCache]: Analyzing trace with hash -1020844034, now seen corresponding path program 1 times
[2023-11-29 02:53:22,054 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:53:22,054 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123895039]
[2023-11-29 02:53:22,055 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:22,056 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:53:22,502 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:53:22,502 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751481632]
[2023-11-29 02:53:22,503 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:22,503 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:22,503 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:53:22,504 INFO  L229       MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:53:22,505 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process
[2023-11-29 02:53:30,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:30,467 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30839 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:53:30,527 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:53:30,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2023-11-29 02:53:30,749 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:53:30,749 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:53:30,749 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123895039]
[2023-11-29 02:53:30,749 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:53:30,749 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751481632]
[2023-11-29 02:53:30,749 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751481632] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:53:30,749 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:53:30,751 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:53:30,751 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326714222]
[2023-11-29 02:53:30,751 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:53:30,753 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:53:30,754 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:53:30,756 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:53:30,756 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:53:30,757 INFO  L87              Difference]: Start difference. First operand 7981 states and 13231 transitions. Second operand  has 7 states, 7 states have (on average 694.4285714285714) internal successors, (4861), 7 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:31,221 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:31,221 INFO  L93              Difference]: Finished difference Result 22205 states and 36798 transitions.
[2023-11-29 02:53:31,222 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:53:31,223 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 694.4285714285714) internal successors, (4861), 7 states have internal predecessors, (4861), 0 states have call successors, (0), 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 5130
[2023-11-29 02:53:31,226 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:31,237 INFO  L225             Difference]: With dead ends: 22205
[2023-11-29 02:53:31,237 INFO  L226             Difference]: Without dead ends: 14860
[2023-11-29 02:53:31,243 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5139 GetRequests, 5127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:53:31,243 INFO  L413           NwaCegarLoop]: 12622 mSDtfsCounter, 33878 mSDsluCounter, 49797 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33878 SdHoareTripleChecker+Valid, 62419 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:31,243 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33878 Valid, 62419 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:53:31,256 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14860 states.
[2023-11-29 02:53:31,331 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14860 to 7986.
[2023-11-29 02:53:31,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7986 states, 7985 states have (on average 1.6578584846587352) internal successors, (13238), 7985 states have internal predecessors, (13238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:31,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7986 states to 7986 states and 13238 transitions.
[2023-11-29 02:53:31,346 INFO  L78                 Accepts]: Start accepts. Automaton has 7986 states and 13238 transitions. Word has length 5130
[2023-11-29 02:53:31,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:31,348 INFO  L495      AbstractCegarLoop]: Abstraction has 7986 states and 13238 transitions.
[2023-11-29 02:53:31,350 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 694.4285714285714) internal successors, (4861), 7 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:31,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 7986 states and 13238 transitions.
[2023-11-29 02:53:31,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5132
[2023-11-29 02:53:31,457 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:53:31,458 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:53:31,550 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0
[2023-11-29 02:53:31,659 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:31,659 INFO  L420      AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:53:31,659 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:53:31,660 INFO  L85        PathProgramCache]: Analyzing trace with hash -307379518, now seen corresponding path program 1 times
[2023-11-29 02:53:31,660 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:53:31,660 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5495106]
[2023-11-29 02:53:31,661 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:31,661 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:53:32,321 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:53:32,322 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127073719]
[2023-11-29 02:53:32,322 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:32,323 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:32,323 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:53:32,323 INFO  L229       MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:53:32,324 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process
[2023-11-29 02:53:39,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:40,168 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30843 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:53:40,237 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:53:40,492 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked.
[2023-11-29 02:53:40,492 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:53:40,492 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:53:40,492 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5495106]
[2023-11-29 02:53:40,492 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:53:40,492 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127073719]
[2023-11-29 02:53:40,492 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127073719] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:53:40,492 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:53:40,494 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:53:40,494 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331734073]
[2023-11-29 02:53:40,494 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:53:40,497 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:53:40,498 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:53:40,500 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:53:40,500 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:53:40,502 INFO  L87              Difference]: Start difference. First operand 7986 states and 13238 transitions. Second operand  has 7 states, 7 states have (on average 695.1428571428571) internal successors, (4866), 7 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:41,045 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:41,045 INFO  L93              Difference]: Finished difference Result 22220 states and 36819 transitions.
[2023-11-29 02:53:41,045 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:53:41,047 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 695.1428571428571) internal successors, (4866), 7 states have internal predecessors, (4866), 0 states have call successors, (0), 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 5131
[2023-11-29 02:53:41,051 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:41,062 INFO  L225             Difference]: With dead ends: 22220
[2023-11-29 02:53:41,062 INFO  L226             Difference]: Without dead ends: 14864
[2023-11-29 02:53:41,068 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5140 GetRequests, 5128 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:53:41,068 INFO  L413           NwaCegarLoop]: 12612 mSDtfsCounter, 33882 mSDsluCounter, 49767 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33882 SdHoareTripleChecker+Valid, 62379 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:41,068 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33882 Valid, 62379 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:53:41,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14864 states.
[2023-11-29 02:53:41,154 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14864 to 7991.
[2023-11-29 02:53:41,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7991 states, 7990 states have (on average 1.6576971214017522) internal successors, (13245), 7990 states have internal predecessors, (13245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:41,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7991 states to 7991 states and 13245 transitions.
[2023-11-29 02:53:41,169 INFO  L78                 Accepts]: Start accepts. Automaton has 7991 states and 13245 transitions. Word has length 5131
[2023-11-29 02:53:41,171 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:41,171 INFO  L495      AbstractCegarLoop]: Abstraction has 7991 states and 13245 transitions.
[2023-11-29 02:53:41,172 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 695.1428571428571) internal successors, (4866), 7 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:41,172 INFO  L276                IsEmpty]: Start isEmpty. Operand 7991 states and 13245 transitions.
[2023-11-29 02:53:41,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5133
[2023-11-29 02:53:41,279 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:53:41,280 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:53:41,372 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0
[2023-11-29 02:53:41,481 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77
[2023-11-29 02:53:41,481 INFO  L420      AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:53:41,481 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:53:41,482 INFO  L85        PathProgramCache]: Analyzing trace with hash 1448127756, now seen corresponding path program 1 times
[2023-11-29 02:53:41,482 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:53:41,482 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232950416]
[2023-11-29 02:53:41,483 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:41,483 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:53:41,953 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:53:41,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428991769]
[2023-11-29 02:53:41,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:41,954 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:41,955 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:53:41,955 INFO  L229       MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:53:41,956 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process
[2023-11-29 02:53:49,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:49,884 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30846 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:53:49,949 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:53:50,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked.
[2023-11-29 02:53:50,180 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:53:50,180 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:53:50,180 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232950416]
[2023-11-29 02:53:50,180 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:53:50,180 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428991769]
[2023-11-29 02:53:50,180 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428991769] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:53:50,180 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:53:50,182 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:53:50,182 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132404574]
[2023-11-29 02:53:50,182 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:53:50,185 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:53:50,185 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:53:50,187 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:53:50,187 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:53:50,188 INFO  L87              Difference]: Start difference. First operand 7991 states and 13245 transitions. Second operand  has 7 states, 7 states have (on average 695.8571428571429) internal successors, (4871), 7 states have internal predecessors, (4871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:50,634 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:50,634 INFO  L93              Difference]: Finished difference Result 22235 states and 36840 transitions.
[2023-11-29 02:53:50,635 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:53:50,636 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 695.8571428571429) internal successors, (4871), 7 states have internal predecessors, (4871), 0 states have call successors, (0), 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 5132
[2023-11-29 02:53:50,639 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:50,649 INFO  L225             Difference]: With dead ends: 22235
[2023-11-29 02:53:50,650 INFO  L226             Difference]: Without dead ends: 14868
[2023-11-29 02:53:50,655 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5141 GetRequests, 5129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:53:50,655 INFO  L413           NwaCegarLoop]: 12602 mSDtfsCounter, 33886 mSDsluCounter, 49737 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33886 SdHoareTripleChecker+Valid, 62339 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:50,655 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33886 Valid, 62339 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:53:50,667 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14868 states.
[2023-11-29 02:53:50,738 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14868 to 7996.
[2023-11-29 02:53:50,745 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7996 states, 7995 states have (on average 1.6575359599749844) internal successors, (13252), 7995 states have internal predecessors, (13252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:50,753 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 13252 transitions.
[2023-11-29 02:53:50,753 INFO  L78                 Accepts]: Start accepts. Automaton has 7996 states and 13252 transitions. Word has length 5132
[2023-11-29 02:53:50,756 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:50,756 INFO  L495      AbstractCegarLoop]: Abstraction has 7996 states and 13252 transitions.
[2023-11-29 02:53:50,757 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 695.8571428571429) internal successors, (4871), 7 states have internal predecessors, (4871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:50,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 7996 states and 13252 transitions.
[2023-11-29 02:53:50,864 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5134
[2023-11-29 02:53:50,864 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:53:50,865 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 02:53:50,953 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0
[2023-11-29 02:53:51,066 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78
[2023-11-29 02:53:51,066 INFO  L420      AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:53:51,066 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:53:51,067 INFO  L85        PathProgramCache]: Analyzing trace with hash 2118430776, now seen corresponding path program 1 times
[2023-11-29 02:53:51,067 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:53:51,067 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714793709]
[2023-11-29 02:53:51,068 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:51,068 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:53:51,521 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:53:51,521 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041494575]
[2023-11-29 02:53:51,522 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:53:51,522 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:53:51,522 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:53:51,523 INFO  L229       MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:53:51,524 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process
[2023-11-29 02:53:58,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:53:59,072 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30850 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:53:59,134 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:53:59,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked.
[2023-11-29 02:53:59,349 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:53:59,349 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:53:59,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714793709]
[2023-11-29 02:53:59,349 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:53:59,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041494575]
[2023-11-29 02:53:59,349 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041494575] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:53:59,349 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:53:59,351 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:53:59,351 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575626198]
[2023-11-29 02:53:59,351 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:53:59,353 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:53:59,353 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:53:59,355 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:53:59,355 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:53:59,356 INFO  L87              Difference]: Start difference. First operand 7996 states and 13252 transitions. Second operand  has 7 states, 7 states have (on average 696.5714285714286) internal successors, (4876), 7 states have internal predecessors, (4876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:59,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:53:59,803 INFO  L93              Difference]: Finished difference Result 22250 states and 36861 transitions.
[2023-11-29 02:53:59,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:53:59,805 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 696.5714285714286) internal successors, (4876), 7 states have internal predecessors, (4876), 0 states have call successors, (0), 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 5133
[2023-11-29 02:53:59,808 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:53:59,818 INFO  L225             Difference]: With dead ends: 22250
[2023-11-29 02:53:59,818 INFO  L226             Difference]: Without dead ends: 14872
[2023-11-29 02:53:59,824 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5142 GetRequests, 5130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:53:59,824 INFO  L413           NwaCegarLoop]: 12592 mSDtfsCounter, 33890 mSDsluCounter, 49707 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33890 SdHoareTripleChecker+Valid, 62299 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:53:59,824 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33890 Valid, 62299 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:53:59,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14872 states.
[2023-11-29 02:53:59,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14872 to 8001.
[2023-11-29 02:53:59,912 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8001 states, 8000 states have (on average 1.657375) internal successors, (13259), 8000 states have internal predecessors, (13259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:59,920 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8001 states to 8001 states and 13259 transitions.
[2023-11-29 02:53:59,920 INFO  L78                 Accepts]: Start accepts. Automaton has 8001 states and 13259 transitions. Word has length 5133
[2023-11-29 02:53:59,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:53:59,923 INFO  L495      AbstractCegarLoop]: Abstraction has 8001 states and 13259 transitions.
[2023-11-29 02:53:59,924 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 696.5714285714286) internal successors, (4876), 7 states have internal predecessors, (4876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:53:59,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 8001 states and 13259 transitions.
[2023-11-29 02:54:00,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5135
[2023-11-29 02:54:00,032 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:54:00,033 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:54:00,115 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0
[2023-11-29 02:54:00,233 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79
[2023-11-29 02:54:00,234 INFO  L420      AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:54:00,234 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:54:00,235 INFO  L85        PathProgramCache]: Analyzing trace with hash 154887578, now seen corresponding path program 1 times
[2023-11-29 02:54:00,235 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:54:00,235 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119065812]
[2023-11-29 02:54:00,235 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:00,235 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:54:00,687 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:54:00,687 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843853518]
[2023-11-29 02:54:00,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:00,688 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:00,689 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:54:00,689 INFO  L229       MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:54:00,690 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process
[2023-11-29 02:54:08,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:54:08,274 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30853 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:54:08,339 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:54:08,554 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked.
[2023-11-29 02:54:08,554 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:54:08,554 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:54:08,554 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119065812]
[2023-11-29 02:54:08,554 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:54:08,555 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843853518]
[2023-11-29 02:54:08,555 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [843853518] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:54:08,555 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:54:08,556 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:54:08,556 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405367859]
[2023-11-29 02:54:08,556 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:54:08,558 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:54:08,558 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:54:08,560 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:54:08,560 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:54:08,561 INFO  L87              Difference]: Start difference. First operand 8001 states and 13259 transitions. Second operand  has 7 states, 7 states have (on average 697.2857142857143) internal successors, (4881), 7 states have internal predecessors, (4881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:09,012 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:54:09,013 INFO  L93              Difference]: Finished difference Result 22265 states and 36882 transitions.
[2023-11-29 02:54:09,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:54:09,014 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 697.2857142857143) internal successors, (4881), 7 states have internal predecessors, (4881), 0 states have call successors, (0), 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 5134
[2023-11-29 02:54:09,018 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:54:09,029 INFO  L225             Difference]: With dead ends: 22265
[2023-11-29 02:54:09,029 INFO  L226             Difference]: Without dead ends: 14876
[2023-11-29 02:54:09,034 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5143 GetRequests, 5131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:54:09,034 INFO  L413           NwaCegarLoop]: 12582 mSDtfsCounter, 33894 mSDsluCounter, 49677 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33894 SdHoareTripleChecker+Valid, 62259 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:54:09,035 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33894 Valid, 62259 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:54:09,047 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14876 states.
[2023-11-29 02:54:09,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14876 to 8006.
[2023-11-29 02:54:09,124 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8006 states, 8005 states have (on average 1.657214241099313) internal successors, (13266), 8005 states have internal predecessors, (13266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:09,132 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8006 states to 8006 states and 13266 transitions.
[2023-11-29 02:54:09,132 INFO  L78                 Accepts]: Start accepts. Automaton has 8006 states and 13266 transitions. Word has length 5134
[2023-11-29 02:54:09,134 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:54:09,134 INFO  L495      AbstractCegarLoop]: Abstraction has 8006 states and 13266 transitions.
[2023-11-29 02:54:09,135 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 697.2857142857143) internal successors, (4881), 7 states have internal predecessors, (4881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:09,136 INFO  L276                IsEmpty]: Start isEmpty. Operand 8006 states and 13266 transitions.
[2023-11-29 02:54:09,242 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5136
[2023-11-29 02:54:09,242 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:54:09,243 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 02:54:09,323 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0
[2023-11-29 02:54:09,444 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:09,444 INFO  L420      AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:54:09,444 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:54:09,445 INFO  L85        PathProgramCache]: Analyzing trace with hash 282441006, now seen corresponding path program 1 times
[2023-11-29 02:54:09,445 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:54:09,445 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525931419]
[2023-11-29 02:54:09,446 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:09,446 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:54:09,900 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:54:09,900 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600618499]
[2023-11-29 02:54:09,901 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:09,901 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:09,901 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:54:09,902 INFO  L229       MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:54:09,903 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process
[2023-11-29 02:54:16,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:54:17,155 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30857 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:54:17,220 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:54:17,449 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked.
[2023-11-29 02:54:17,449 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:54:17,449 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:54:17,449 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525931419]
[2023-11-29 02:54:17,449 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:54:17,449 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600618499]
[2023-11-29 02:54:17,450 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600618499] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:54:17,450 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:54:17,451 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:54:17,451 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161717076]
[2023-11-29 02:54:17,452 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:54:17,454 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:54:17,454 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:54:17,457 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:54:17,457 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:54:17,458 INFO  L87              Difference]: Start difference. First operand 8006 states and 13266 transitions. Second operand  has 7 states, 7 states have (on average 698.0) internal successors, (4886), 7 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:17,910 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:54:17,910 INFO  L93              Difference]: Finished difference Result 22280 states and 36903 transitions.
[2023-11-29 02:54:17,910 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:54:17,911 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 698.0) internal successors, (4886), 7 states have internal predecessors, (4886), 0 states have call successors, (0), 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 5135
[2023-11-29 02:54:17,915 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:54:17,926 INFO  L225             Difference]: With dead ends: 22280
[2023-11-29 02:54:17,926 INFO  L226             Difference]: Without dead ends: 14880
[2023-11-29 02:54:17,931 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5144 GetRequests, 5132 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:54:17,932 INFO  L413           NwaCegarLoop]: 12572 mSDtfsCounter, 33898 mSDsluCounter, 49647 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33898 SdHoareTripleChecker+Valid, 62219 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:54:17,932 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33898 Valid, 62219 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:54:17,943 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14880 states.
[2023-11-29 02:54:18,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14880 to 8011.
[2023-11-29 02:54:18,017 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8011 states, 8010 states have (on average 1.6570536828963796) internal successors, (13273), 8010 states have internal predecessors, (13273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:18,024 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8011 states to 8011 states and 13273 transitions.
[2023-11-29 02:54:18,025 INFO  L78                 Accepts]: Start accepts. Automaton has 8011 states and 13273 transitions. Word has length 5135
[2023-11-29 02:54:18,027 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:54:18,027 INFO  L495      AbstractCegarLoop]: Abstraction has 8011 states and 13273 transitions.
[2023-11-29 02:54:18,028 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 698.0) internal successors, (4886), 7 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:18,028 INFO  L276                IsEmpty]: Start isEmpty. Operand 8011 states and 13273 transitions.
[2023-11-29 02:54:18,135 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5137
[2023-11-29 02:54:18,135 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:54:18,136 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 02:54:18,218 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0
[2023-11-29 02:54:18,336 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:18,337 INFO  L420      AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:54:18,337 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:54:18,338 INFO  L85        PathProgramCache]: Analyzing trace with hash -18501208, now seen corresponding path program 1 times
[2023-11-29 02:54:18,338 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:54:18,338 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165340590]
[2023-11-29 02:54:18,339 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:18,339 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:54:18,850 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:54:18,850 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602352532]
[2023-11-29 02:54:18,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:18,851 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:18,851 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:54:18,852 INFO  L229       MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:54:18,853 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process
[2023-11-29 02:54:26,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:54:26,230 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30860 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:54:26,295 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:54:26,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked.
[2023-11-29 02:54:26,522 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:54:26,522 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:54:26,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165340590]
[2023-11-29 02:54:26,522 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:54:26,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602352532]
[2023-11-29 02:54:26,522 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602352532] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:54:26,522 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:54:26,524 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:54:26,524 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194168149]
[2023-11-29 02:54:26,524 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:54:26,527 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:54:26,527 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:54:26,529 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:54:26,529 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:54:26,530 INFO  L87              Difference]: Start difference. First operand 8011 states and 13273 transitions. Second operand  has 7 states, 7 states have (on average 698.7142857142857) internal successors, (4891), 7 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:26,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:54:26,991 INFO  L93              Difference]: Finished difference Result 22295 states and 36924 transitions.
[2023-11-29 02:54:26,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 02:54:26,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 698.7142857142857) internal successors, (4891), 7 states have internal predecessors, (4891), 0 states have call successors, (0), 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 5136
[2023-11-29 02:54:26,996 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:54:27,007 INFO  L225             Difference]: With dead ends: 22295
[2023-11-29 02:54:27,007 INFO  L226             Difference]: Without dead ends: 14884
[2023-11-29 02:54:27,013 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5145 GetRequests, 5133 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:54:27,013 INFO  L413           NwaCegarLoop]: 12562 mSDtfsCounter, 33902 mSDsluCounter, 49617 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33902 SdHoareTripleChecker+Valid, 62179 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:54:27,013 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33902 Valid, 62179 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:54:27,026 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14884 states.
[2023-11-29 02:54:27,093 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14884 to 8016.
[2023-11-29 02:54:27,100 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8016 states, 8015 states have (on average 1.6568933250155957) internal successors, (13280), 8015 states have internal predecessors, (13280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:27,108 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 13280 transitions.
[2023-11-29 02:54:27,108 INFO  L78                 Accepts]: Start accepts. Automaton has 8016 states and 13280 transitions. Word has length 5136
[2023-11-29 02:54:27,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:54:27,111 INFO  L495      AbstractCegarLoop]: Abstraction has 8016 states and 13280 transitions.
[2023-11-29 02:54:27,112 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 698.7142857142857) internal successors, (4891), 7 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:27,112 INFO  L276                IsEmpty]: Start isEmpty. Operand 8016 states and 13280 transitions.
[2023-11-29 02:54:27,223 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5138
[2023-11-29 02:54:27,223 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:54:27,224 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:54:27,307 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0
[2023-11-29 02:54:27,424 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:27,425 INFO  L420      AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:54:27,425 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:54:27,426 INFO  L85        PathProgramCache]: Analyzing trace with hash -1642548828, now seen corresponding path program 1 times
[2023-11-29 02:54:27,426 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:54:27,426 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525201253]
[2023-11-29 02:54:27,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:27,427 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:54:28,006 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:54:28,006 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591640083]
[2023-11-29 02:54:28,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:28,007 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:28,007 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:54:28,008 INFO  L229       MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:54:28,008 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process
[2023-11-29 02:54:35,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:54:35,484 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30864 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 02:54:35,547 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:54:35,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked.
[2023-11-29 02:54:35,767 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:54:35,768 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:54:35,768 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525201253]
[2023-11-29 02:54:35,768 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:54:35,768 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591640083]
[2023-11-29 02:54:35,768 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [591640083] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:54:35,768 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:54:35,770 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 02:54:35,770 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209920151]
[2023-11-29 02:54:35,770 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:54:35,773 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 02:54:35,773 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:54:35,775 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 02:54:35,775 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 02:54:35,776 INFO  L87              Difference]: Start difference. First operand 8016 states and 13280 transitions. Second operand  has 7 states, 7 states have (on average 699.1428571428571) internal successors, (4894), 7 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:36,203 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:54:36,203 INFO  L93              Difference]: Finished difference Result 22303 states and 36934 transitions.
[2023-11-29 02:54:36,203 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 02:54:36,204 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 699.1428571428571) internal successors, (4894), 7 states have internal predecessors, (4894), 0 states have call successors, (0), 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 5137
[2023-11-29 02:54:36,208 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:54:36,218 INFO  L225             Difference]: With dead ends: 22303
[2023-11-29 02:54:36,218 INFO  L226             Difference]: Without dead ends: 14881
[2023-11-29 02:54:36,223 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5145 GetRequests, 5134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 02:54:36,223 INFO  L413           NwaCegarLoop]: 12553 mSDtfsCounter, 33898 mSDsluCounter, 49588 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33898 SdHoareTripleChecker+Valid, 62141 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:54:36,223 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33898 Valid, 62141 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:54:36,235 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14881 states.
[2023-11-29 02:54:36,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14881 to 8018.
[2023-11-29 02:54:36,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8018 states, 8017 states have (on average 1.6567294499189222) internal successors, (13282), 8017 states have internal predecessors, (13282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:36,317 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 13282 transitions.
[2023-11-29 02:54:36,317 INFO  L78                 Accepts]: Start accepts. Automaton has 8018 states and 13282 transitions. Word has length 5137
[2023-11-29 02:54:36,320 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:54:36,320 INFO  L495      AbstractCegarLoop]: Abstraction has 8018 states and 13282 transitions.
[2023-11-29 02:54:36,321 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 699.1428571428571) internal successors, (4894), 7 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:36,321 INFO  L276                IsEmpty]: Start isEmpty. Operand 8018 states and 13282 transitions.
[2023-11-29 02:54:36,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5139
[2023-11-29 02:54:36,428 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:54:36,429 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:54:36,510 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0
[2023-11-29 02:54:36,629 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:36,629 INFO  L420      AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:54:36,630 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:54:36,630 INFO  L85        PathProgramCache]: Analyzing trace with hash -1776423664, now seen corresponding path program 1 times
[2023-11-29 02:54:36,630 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:54:36,630 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235371530]
[2023-11-29 02:54:36,631 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:36,631 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:54:37,077 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:54:37,077 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430627635]
[2023-11-29 02:54:37,078 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:37,078 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:37,078 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:54:37,079 INFO  L229       MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:54:37,080 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process
[2023-11-29 02:54:44,227 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:54:44,405 INFO  L262         TraceCheckSpWp]: Trace formula consists of 30867 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 02:54:44,471 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:54:44,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 434 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked.
[2023-11-29 02:54:44,719 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:54:44,719 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:54:44,719 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235371530]
[2023-11-29 02:54:44,720 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:54:44,720 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430627635]
[2023-11-29 02:54:44,720 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [430627635] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:54:44,720 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:54:44,722 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:54:44,722 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112916825]
[2023-11-29 02:54:44,722 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:54:44,724 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:54:44,725 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:54:44,727 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:54:44,727 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:54:44,728 INFO  L87              Difference]: Start difference. First operand 8018 states and 13282 transitions. Second operand  has 8 states, 8 states have (on average 611.625) internal successors, (4893), 8 states have internal predecessors, (4893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:45,244 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:54:45,244 INFO  L93              Difference]: Finished difference Result 22307 states and 36936 transitions.
[2023-11-29 02:54:45,245 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 02:54:45,246 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 611.625) internal successors, (4893), 8 states have internal predecessors, (4893), 0 states have call successors, (0), 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 5138
[2023-11-29 02:54:45,249 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:54:45,259 INFO  L225             Difference]: With dead ends: 22307
[2023-11-29 02:54:45,259 INFO  L226             Difference]: Without dead ends: 14889
[2023-11-29 02:54:45,264 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5146 GetRequests, 5134 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:54:45,265 INFO  L413           NwaCegarLoop]: 12563 mSDtfsCounter, 33894 mSDsluCounter, 62172 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33894 SdHoareTripleChecker+Valid, 74735 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:54:45,265 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [33894 Valid, 74735 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:54:45,276 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14889 states.
[2023-11-29 02:54:45,345 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14889 to 8018.
[2023-11-29 02:54:45,352 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8018 states, 8017 states have (on average 1.6567294499189222) internal successors, (13282), 8017 states have internal predecessors, (13282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:45,360 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 13282 transitions.
[2023-11-29 02:54:45,360 INFO  L78                 Accepts]: Start accepts. Automaton has 8018 states and 13282 transitions. Word has length 5138
[2023-11-29 02:54:45,363 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:54:45,363 INFO  L495      AbstractCegarLoop]: Abstraction has 8018 states and 13282 transitions.
[2023-11-29 02:54:45,364 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 611.625) internal successors, (4893), 8 states have internal predecessors, (4893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:54:45,364 INFO  L276                IsEmpty]: Start isEmpty. Operand 8018 states and 13282 transitions.
[2023-11-29 02:54:45,471 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5140
[2023-11-29 02:54:45,471 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:54:45,472 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 02:54:45,556 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0
[2023-11-29 02:54:45,672 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:45,673 INFO  L420      AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:54:45,673 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:54:45,674 INFO  L85        PathProgramCache]: Analyzing trace with hash 776745120, now seen corresponding path program 1 times
[2023-11-29 02:54:45,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:54:45,674 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262348006]
[2023-11-29 02:54:45,675 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:45,675 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:54:46,132 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:54:46,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130486801]
[2023-11-29 02:54:46,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:54:46,134 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:54:46,134 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:54:46,134 INFO  L229       MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:54:46,135 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeb8820-2e6c-4bf6-85f2-eef066b7980b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process