./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop3-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version cf1a7837
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop3-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl --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 afe726ff4bfcb006fa1921d1acd83593e17d3b3df66156bb7f2c9bf761f68906
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-cf1a783
[2023-11-12 02:05:33,587 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-12 02:05:33,710 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-12 02:05:33,716 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-12 02:05:33,716 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-12 02:05:33,762 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-12 02:05:33,763 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-12 02:05:33,764 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-12 02:05:33,766 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-12 02:05:33,770 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-12 02:05:33,772 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-12 02:05:33,772 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-12 02:05:33,773 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-12 02:05:33,774 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-12 02:05:33,775 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-12 02:05:33,775 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-12 02:05:33,775 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-12 02:05:33,776 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-12 02:05:33,776 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-12 02:05:33,777 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-12 02:05:33,777 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-12 02:05:33,777 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-12 02:05:33,778 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-12 02:05:33,778 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-12 02:05:33,779 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-12 02:05:33,779 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-12 02:05:33,780 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-12 02:05:33,780 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-12 02:05:33,780 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-12 02:05:33,781 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-12 02:05:33,781 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-12 02:05:33,782 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-12 02:05:33,782 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-12 02:05:33,782 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-12 02:05:33,782 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-12 02:05:33,783 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-12 02:05:33,783 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_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/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_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl
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 -> afe726ff4bfcb006fa1921d1acd83593e17d3b3df66156bb7f2c9bf761f68906
[2023-11-12 02:05:34,085 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-12 02:05:34,114 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-12 02:05:34,117 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-12 02:05:34,119 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-12 02:05:34,120 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-12 02:05:34,121 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop3-func-interl.c
[2023-11-12 02:05:37,150 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-12 02:05:37,551 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-12 02:05:37,552 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop3-func-interl.c
[2023-11-12 02:05:37,582 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/data/39c19ee54/e9711571c0854761836e88a651c0acd7/FLAG0fc6af0ab
[2023-11-12 02:05:37,600 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/data/39c19ee54/e9711571c0854761836e88a651c0acd7
[2023-11-12 02:05:37,606 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-12 02:05:37,609 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-12 02:05:37,612 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-12 02:05:37,613 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-12 02:05:37,619 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-12 02:05:37,621 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:05:37" (1/1) ...
[2023-11-12 02:05:37,623 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635b19a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:37, skipping insertion in model container
[2023-11-12 02:05:37,623 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:05:37" (1/1) ...
[2023-11-12 02:05:37,726 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-12 02:05:37,992 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_e8392680-867a-430e-a52a-f68b7c343767/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop3-func-interl.c[1174,1187]
[2023-11-12 02:05:38,721 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:05:38,730 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-12 02:05:38,742 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_e8392680-867a-430e-a52a-f68b7c343767/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop3-func-interl.c[1174,1187]
[2023-11-12 02:05:39,101 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:05:39,120 INFO  L206         MainTranslator]: Completed translation
[2023-11-12 02:05:39,121 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39 WrapperNode
[2023-11-12 02:05:39,121 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-12 02:05:39,123 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-12 02:05:39,123 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-12 02:05:39,124 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-12 02:05:39,131 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:39,246 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:40,524 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 11913
[2023-11-12 02:05:40,524 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-12 02:05:40,525 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-12 02:05:40,525 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-12 02:05:40,525 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-12 02:05:40,535 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:40,535 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:41,044 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:41,044 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:41,615 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:41,681 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:41,881 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:41,923 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:42,122 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-12 02:05:42,123 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-12 02:05:42,123 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-12 02:05:42,123 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-12 02:05:42,124 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (1/1) ...
[2023-11-12 02:05:42,139 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-12 02:05:42,152 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:05:42,171 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-12 02:05:42,177 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-12 02:05:42,205 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-12 02:05:42,206 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-12 02:05:42,206 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-12 02:05:42,206 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-12 02:05:42,949 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-12 02:05:42,952 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-12 02:05:52,025 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-12 02:05:52,053 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-12 02:05:52,053 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-12 02:05:52,060 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:05:52 BoogieIcfgContainer
[2023-11-12 02:05:52,060 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-12 02:05:52,064 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-12 02:05:52,064 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-12 02:05:52,068 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-12 02:05:52,068 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:05:37" (1/3) ...
[2023-11-12 02:05:52,069 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fda4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:05:52, skipping insertion in model container
[2023-11-12 02:05:52,069 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:39" (2/3) ...
[2023-11-12 02:05:52,071 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fda4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:05:52, skipping insertion in model container
[2023-11-12 02:05:52,073 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:05:52" (3/3) ...
[2023-11-12 02:05:52,074 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.1.prop3-func-interl.c
[2023-11-12 02:05:52,093 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-12 02:05:52,094 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-12 02:05:52,198 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-12 02:05:52,205 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;@21606b3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-12 02:05:52,205 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-12 02:05:52,220 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2837 states, 2835 states have (on average 1.6701940035273368) internal successors, (4735), 2836 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:52,237 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2023-11-12 02:05:52,237 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:05:52,238 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]
[2023-11-12 02:05:52,239 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:05:52,244 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:05:52,244 INFO  L85        PathProgramCache]: Analyzing trace with hash 2106249592, now seen corresponding path program 1 times
[2023-11-12 02:05:52,252 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:05:52,252 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098382699]
[2023-11-12 02:05:52,252 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:05:52,253 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:05:52,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:05:53,492 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:05:53,492 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:05:53,493 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098382699]
[2023-11-12 02:05:53,494 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098382699] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:05:53,494 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:05:53,494 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-12 02:05:53,496 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69833401]
[2023-11-12 02:05:53,496 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:05:53,502 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:05:53,503 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:05:53,554 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:05:53,555 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:05:53,565 INFO  L87              Difference]: Start difference. First operand  has 2837 states, 2835 states have (on average 1.6701940035273368) internal successors, (4735), 2836 states have internal predecessors, (4735), 0 states have call successors, (0), 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 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:53,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:05:53,875 INFO  L93              Difference]: Finished difference Result 5571 states and 9303 transitions.
[2023-11-12 02:05:53,876 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:05:53,878 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 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 159
[2023-11-12 02:05:53,880 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:05:53,922 INFO  L225             Difference]: With dead ends: 5571
[2023-11-12 02:05:53,922 INFO  L226             Difference]: Without dead ends: 2835
[2023-11-12 02:05:53,936 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:05:53,943 INFO  L413           NwaCegarLoop]: 4727 mSDtfsCounter, 1 mSDsluCounter, 9448 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14175 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:05:53,944 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 14175 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:05:53,973 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2835 states.
[2023-11-12 02:05:54,103 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835.
[2023-11-12 02:05:54,112 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2835 states, 2834 states have (on average 1.6693719124911786) internal successors, (4731), 2834 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:54,126 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4731 transitions.
[2023-11-12 02:05:54,127 INFO  L78                 Accepts]: Start accepts. Automaton has 2835 states and 4731 transitions. Word has length 159
[2023-11-12 02:05:54,131 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:05:54,131 INFO  L495      AbstractCegarLoop]: Abstraction has 2835 states and 4731 transitions.
[2023-11-12 02:05:54,132 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:54,239 INFO  L276                IsEmpty]: Start isEmpty. Operand 2835 states and 4731 transitions.
[2023-11-12 02:05:54,246 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2023-11-12 02:05:54,246 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:05:54,247 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]
[2023-11-12 02:05:54,247 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-12 02:05:54,247 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:05:54,248 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:05:54,249 INFO  L85        PathProgramCache]: Analyzing trace with hash 870953784, now seen corresponding path program 1 times
[2023-11-12 02:05:54,249 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:05:54,249 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947016327]
[2023-11-12 02:05:54,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:05:54,249 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:05:54,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:05:54,856 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:05:54,857 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:05:54,857 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947016327]
[2023-11-12 02:05:54,858 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947016327] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:05:54,858 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:05:54,858 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-12 02:05:54,858 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752562612]
[2023-11-12 02:05:54,859 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:05:54,861 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:05:54,861 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:05:54,862 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:05:54,863 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:05:54,863 INFO  L87              Difference]: Start difference. First operand 2835 states and 4731 transitions. Second operand  has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:55,088 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:05:55,088 INFO  L93              Difference]: Finished difference Result 5572 states and 9299 transitions.
[2023-11-12 02:05:55,089 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:05:55,089 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 160
[2023-11-12 02:05:55,092 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:05:55,109 INFO  L225             Difference]: With dead ends: 5572
[2023-11-12 02:05:55,109 INFO  L226             Difference]: Without dead ends: 2838
[2023-11-12 02:05:55,120 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
[2023-11-12 02:05:55,123 INFO  L413           NwaCegarLoop]: 4727 mSDtfsCounter, 1 mSDsluCounter, 9445 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14172 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:05:55,124 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 14172 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:05:55,133 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2838 states.
[2023-11-12 02:05:55,193 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2837.
[2023-11-12 02:05:55,201 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2837 states, 2836 states have (on average 1.6688998589562765) internal successors, (4733), 2836 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:55,215 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 4733 transitions.
[2023-11-12 02:05:55,215 INFO  L78                 Accepts]: Start accepts. Automaton has 2837 states and 4733 transitions. Word has length 160
[2023-11-12 02:05:55,217 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:05:55,217 INFO  L495      AbstractCegarLoop]: Abstraction has 2837 states and 4733 transitions.
[2023-11-12 02:05:55,217 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:55,218 INFO  L276                IsEmpty]: Start isEmpty. Operand 2837 states and 4733 transitions.
[2023-11-12 02:05:55,227 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2023-11-12 02:05:55,228 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:05:55,228 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]
[2023-11-12 02:05:55,228 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-12 02:05:55,229 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:05:55,230 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:05:55,230 INFO  L85        PathProgramCache]: Analyzing trace with hash 1019331986, now seen corresponding path program 1 times
[2023-11-12 02:05:55,230 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:05:55,230 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092090726]
[2023-11-12 02:05:55,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:05:55,232 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:05:55,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:05:55,750 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:05:55,751 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:05:55,752 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092090726]
[2023-11-12 02:05:55,752 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092090726] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:05:55,753 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:05:55,754 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-12 02:05:55,754 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846691933]
[2023-11-12 02:05:55,754 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:05:55,756 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:05:55,756 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:05:55,758 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:05:55,758 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:05:55,758 INFO  L87              Difference]: Start difference. First operand 2837 states and 4733 transitions. Second operand  has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:56,049 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:05:56,050 INFO  L93              Difference]: Finished difference Result 8299 states and 13850 transitions.
[2023-11-12 02:05:56,050 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:05:56,051 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 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 161
[2023-11-12 02:05:56,051 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:05:56,084 INFO  L225             Difference]: With dead ends: 8299
[2023-11-12 02:05:56,084 INFO  L226             Difference]: Without dead ends: 5563
[2023-11-12 02:05:56,092 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
[2023-11-12 02:05:56,098 INFO  L413           NwaCegarLoop]: 4933 mSDtfsCounter, 4548 mSDsluCounter, 9647 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4548 SdHoareTripleChecker+Valid, 14580 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:05:56,100 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4548 Valid, 14580 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:05:56,111 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5563 states.
[2023-11-12 02:05:56,198 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 2839.
[2023-11-12 02:05:56,206 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2839 states, 2838 states have (on average 1.6684284707540522) internal successors, (4735), 2838 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:56,220 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 4735 transitions.
[2023-11-12 02:05:56,220 INFO  L78                 Accepts]: Start accepts. Automaton has 2839 states and 4735 transitions. Word has length 161
[2023-11-12 02:05:56,221 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:05:56,222 INFO  L495      AbstractCegarLoop]: Abstraction has 2839 states and 4735 transitions.
[2023-11-12 02:05:56,223 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:05:56,226 INFO  L276                IsEmpty]: Start isEmpty. Operand 2839 states and 4735 transitions.
[2023-11-12 02:05:56,228 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2023-11-12 02:05:56,229 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:05:56,229 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]
[2023-11-12 02:05:56,230 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-12 02:05:56,230 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:05:56,232 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:05:56,233 INFO  L85        PathProgramCache]: Analyzing trace with hash -1160539106, now seen corresponding path program 1 times
[2023-11-12 02:05:56,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:05:56,240 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792192957]
[2023-11-12 02:05:56,240 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:05:56,240 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:05:56,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:05:57,041 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:05:57,041 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:05:57,041 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792192957]
[2023-11-12 02:05:57,041 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792192957] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:05:57,042 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:05:57,042 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-12 02:05:57,042 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966011455]
[2023-11-12 02:05:57,042 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:05:57,043 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-12 02:05:57,043 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:05:57,044 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-12 02:05:57,044 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:05:57,045 INFO  L87              Difference]: Start difference. First operand 2839 states and 4735 transitions. Second operand  has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:00,906 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:06:00,906 INFO  L93              Difference]: Finished difference Result 8313 states and 13869 transitions.
[2023-11-12 02:06:00,906 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-12 02:06:00,907 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 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 162
[2023-11-12 02:06:00,907 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:06:00,943 INFO  L225             Difference]: With dead ends: 8313
[2023-11-12 02:06:00,944 INFO  L226             Difference]: Without dead ends: 5575
[2023-11-12 02:06:00,948 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-11-12 02:06:00,955 INFO  L413           NwaCegarLoop]: 3810 mSDtfsCounter, 13700 mSDsluCounter, 7613 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13700 SdHoareTripleChecker+Valid, 11423 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2023-11-12 02:06:00,957 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13700 Valid, 11423 Invalid, 2765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2023-11-12 02:06:00,967 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5575 states.
[2023-11-12 02:06:01,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 2965.
[2023-11-12 02:06:01,052 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2965 states, 2964 states have (on average 1.6676788124156545) internal successors, (4943), 2964 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:01,063 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4943 transitions.
[2023-11-12 02:06:01,064 INFO  L78                 Accepts]: Start accepts. Automaton has 2965 states and 4943 transitions. Word has length 162
[2023-11-12 02:06:01,064 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:06:01,064 INFO  L495      AbstractCegarLoop]: Abstraction has 2965 states and 4943 transitions.
[2023-11-12 02:06:01,064 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:01,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 2965 states and 4943 transitions.
[2023-11-12 02:06:01,066 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2023-11-12 02:06:01,067 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:06:01,067 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]
[2023-11-12 02:06:01,067 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-12 02:06:01,067 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:06:01,068 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:06:01,068 INFO  L85        PathProgramCache]: Analyzing trace with hash -1553566116, now seen corresponding path program 1 times
[2023-11-12 02:06:01,068 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:06:01,069 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687289807]
[2023-11-12 02:06:01,069 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:01,069 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:06:01,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:06:02,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:06:02,170 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:06:02,170 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687289807]
[2023-11-12 02:06:02,171 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687289807] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:06:02,171 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:06:02,171 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-12 02:06:02,171 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001931028]
[2023-11-12 02:06:02,172 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:06:02,172 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-12 02:06:02,172 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:06:02,173 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-12 02:06:02,173 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-11-12 02:06:02,174 INFO  L87              Difference]: Start difference. First operand 2965 states and 4943 transitions. Second operand  has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:02,607 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:06:02,608 INFO  L93              Difference]: Finished difference Result 8429 states and 14062 transitions.
[2023-11-12 02:06:02,608 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-12 02:06:02,610 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 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 162
[2023-11-12 02:06:02,611 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:06:02,641 INFO  L225             Difference]: With dead ends: 8429
[2023-11-12 02:06:02,642 INFO  L226             Difference]: Without dead ends: 5691
[2023-11-12 02:06:02,647 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2023-11-12 02:06:02,648 INFO  L413           NwaCegarLoop]: 4922 mSDtfsCounter, 22987 mSDsluCounter, 14340 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22987 SdHoareTripleChecker+Valid, 19262 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-12 02:06:02,648 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22987 Valid, 19262 Invalid, 68 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-12 02:06:02,658 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5691 states.
[2023-11-12 02:06:02,731 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5691 to 2965.
[2023-11-12 02:06:02,739 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2965 states, 2964 states have (on average 1.6676788124156545) internal successors, (4943), 2964 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:02,748 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4943 transitions.
[2023-11-12 02:06:02,749 INFO  L78                 Accepts]: Start accepts. Automaton has 2965 states and 4943 transitions. Word has length 162
[2023-11-12 02:06:02,749 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:06:02,749 INFO  L495      AbstractCegarLoop]: Abstraction has 2965 states and 4943 transitions.
[2023-11-12 02:06:02,750 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:02,750 INFO  L276                IsEmpty]: Start isEmpty. Operand 2965 states and 4943 transitions.
[2023-11-12 02:06:02,874 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1925
[2023-11-12 02:06:02,874 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:06:02,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:06:02,876 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-12 02:06:02,876 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:06:02,877 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:06:02,878 INFO  L85        PathProgramCache]: Analyzing trace with hash -727131847, now seen corresponding path program 1 times
[2023-11-12 02:06:02,878 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:06:02,878 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616951339]
[2023-11-12 02:06:02,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:02,879 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:06:03,145 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:06:03,145 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903321161]
[2023-11-12 02:06:03,146 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:03,146 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:06:03,146 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:06:03,152 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:06:03,169 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-12 02:06:05,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:06:05,686 INFO  L262         TraceCheckSpWp]: Trace formula consists of 8058 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-12 02:06:05,765 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:06:05,910 INFO  L134       CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:06:05,910 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:06:05,910 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:06:05,911 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616951339]
[2023-11-12 02:06:05,911 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:06:05,911 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903321161]
[2023-11-12 02:06:05,911 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [903321161] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:06:05,911 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:06:05,912 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-12 02:06:05,913 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033013422]
[2023-11-12 02:06:05,913 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:06:05,916 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:06:05,917 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:06:05,920 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:06:05,921 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:06:05,922 INFO  L87              Difference]: Start difference. First operand 2965 states and 4943 transitions. Second operand  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:06,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:06:06,082 INFO  L93              Difference]: Finished difference Result 5713 states and 9527 transitions.
[2023-11-12 02:06:06,083 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:06:06,084 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 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 1924
[2023-11-12 02:06:06,085 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:06:06,103 INFO  L225             Difference]: With dead ends: 5713
[2023-11-12 02:06:06,103 INFO  L226             Difference]: Without dead ends: 2975
[2023-11-12 02:06:06,108 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1923 GetRequests, 1921 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:06:06,109 INFO  L413           NwaCegarLoop]: 4727 mSDtfsCounter, 12 mSDsluCounter, 9442 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14169 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:06:06,109 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14169 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:06:06,117 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2975 states.
[2023-11-12 02:06:06,180 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2967.
[2023-11-12 02:06:06,187 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2967 states, 2966 states have (on average 1.667228590694538) internal successors, (4945), 2966 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:06,197 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4945 transitions.
[2023-11-12 02:06:06,198 INFO  L78                 Accepts]: Start accepts. Automaton has 2967 states and 4945 transitions. Word has length 1924
[2023-11-12 02:06:06,199 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:06:06,199 INFO  L495      AbstractCegarLoop]: Abstraction has 2967 states and 4945 transitions.
[2023-11-12 02:06:06,201 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:06,201 INFO  L276                IsEmpty]: Start isEmpty. Operand 2967 states and 4945 transitions.
[2023-11-12 02:06:06,403 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1925
[2023-11-12 02:06:06,403 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:06:06,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:06:06,438 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-12 02:06:06,621 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:06:06,622 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:06:06,622 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:06:06,623 INFO  L85        PathProgramCache]: Analyzing trace with hash 1578473095, now seen corresponding path program 1 times
[2023-11-12 02:06:06,624 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:06:06,624 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141215610]
[2023-11-12 02:06:06,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:06,625 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:06:06,973 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:06:06,973 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602815952]
[2023-11-12 02:06:06,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:06,974 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:06:06,975 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:06:06,976 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:06:07,005 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-12 02:06:09,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:06:09,698 INFO  L262         TraceCheckSpWp]: Trace formula consists of 8059 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-12 02:06:09,759 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:06:09,873 INFO  L134       CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:06:09,873 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:06:09,873 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:06:09,874 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141215610]
[2023-11-12 02:06:09,874 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:06:09,874 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602815952]
[2023-11-12 02:06:09,874 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [602815952] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:06:09,874 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:06:09,875 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-12 02:06:09,876 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705484232]
[2023-11-12 02:06:09,876 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:06:09,879 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:06:09,879 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:06:09,883 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:06:09,883 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:06:09,892 INFO  L87              Difference]: Start difference. First operand 2967 states and 4945 transitions. Second operand  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:10,034 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:06:10,034 INFO  L93              Difference]: Finished difference Result 5716 states and 9529 transitions.
[2023-11-12 02:06:10,035 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:06:10,037 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 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 1924
[2023-11-12 02:06:10,038 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:06:10,056 INFO  L225             Difference]: With dead ends: 5716
[2023-11-12 02:06:10,056 INFO  L226             Difference]: Without dead ends: 2976
[2023-11-12 02:06:10,060 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1923 GetRequests, 1921 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:06:10,061 INFO  L413           NwaCegarLoop]: 4727 mSDtfsCounter, 12 mSDsluCounter, 9442 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14169 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:06:10,061 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14169 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:06:10,067 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2976 states.
[2023-11-12 02:06:10,114 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2968.
[2023-11-12 02:06:10,119 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2968 states, 2967 states have (on average 1.6670037074486013) internal successors, (4946), 2967 states have internal predecessors, (4946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:10,125 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 4946 transitions.
[2023-11-12 02:06:10,125 INFO  L78                 Accepts]: Start accepts. Automaton has 2968 states and 4946 transitions. Word has length 1924
[2023-11-12 02:06:10,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:06:10,127 INFO  L495      AbstractCegarLoop]: Abstraction has 2968 states and 4946 transitions.
[2023-11-12 02:06:10,128 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:10,128 INFO  L276                IsEmpty]: Start isEmpty. Operand 2968 states and 4946 transitions.
[2023-11-12 02:06:10,162 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1925
[2023-11-12 02:06:10,163 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:06:10,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:06:10,192 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-12 02:06:10,385 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:06:10,386 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:06:10,386 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:06:10,387 INFO  L85        PathProgramCache]: Analyzing trace with hash 1805396217, now seen corresponding path program 1 times
[2023-11-12 02:06:10,387 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:06:10,387 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502595187]
[2023-11-12 02:06:10,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:10,388 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:06:10,642 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:06:10,643 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026878688]
[2023-11-12 02:06:10,643 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:10,644 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:06:10,644 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:06:10,645 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:06:10,665 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-12 02:06:12,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:06:13,015 INFO  L262         TraceCheckSpWp]: Trace formula consists of 8060 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-12 02:06:13,076 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:06:13,187 INFO  L134       CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:06:13,188 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:06:13,188 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:06:13,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502595187]
[2023-11-12 02:06:13,188 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:06:13,189 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026878688]
[2023-11-12 02:06:13,189 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026878688] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:06:13,189 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:06:13,190 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-12 02:06:13,190 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982399200]
[2023-11-12 02:06:13,190 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:06:13,194 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:06:13,194 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:06:13,197 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:06:13,198 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:06:13,199 INFO  L87              Difference]: Start difference. First operand 2968 states and 4946 transitions. Second operand  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:13,325 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:06:13,325 INFO  L93              Difference]: Finished difference Result 5718 states and 9531 transitions.
[2023-11-12 02:06:13,326 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:06:13,327 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 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 1924
[2023-11-12 02:06:13,329 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:06:13,336 INFO  L225             Difference]: With dead ends: 5718
[2023-11-12 02:06:13,336 INFO  L226             Difference]: Without dead ends: 2977
[2023-11-12 02:06:13,341 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1923 GetRequests, 1921 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:06:13,343 INFO  L413           NwaCegarLoop]: 4727 mSDtfsCounter, 12 mSDsluCounter, 9442 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14169 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:06:13,343 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14169 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:06:13,350 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2977 states.
[2023-11-12 02:06:13,410 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2969.
[2023-11-12 02:06:13,415 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2969 states, 2968 states have (on average 1.66677897574124) internal successors, (4947), 2968 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:13,423 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4947 transitions.
[2023-11-12 02:06:13,423 INFO  L78                 Accepts]: Start accepts. Automaton has 2969 states and 4947 transitions. Word has length 1924
[2023-11-12 02:06:13,425 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:06:13,425 INFO  L495      AbstractCegarLoop]: Abstraction has 2969 states and 4947 transitions.
[2023-11-12 02:06:13,426 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:13,426 INFO  L276                IsEmpty]: Start isEmpty. Operand 2969 states and 4947 transitions.
[2023-11-12 02:06:13,486 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1925
[2023-11-12 02:06:13,487 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:06:13,488 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:06:13,520 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-12 02:06:13,712 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:06:13,712 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:06:13,713 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:06:13,713 INFO  L85        PathProgramCache]: Analyzing trace with hash -1071294869, now seen corresponding path program 1 times
[2023-11-12 02:06:13,714 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:06:13,714 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33895854]
[2023-11-12 02:06:13,714 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:13,714 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:06:14,044 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:06:14,045 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134812522]
[2023-11-12 02:06:14,045 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:14,045 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:06:14,046 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:06:14,047 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:06:14,069 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-12 02:06:16,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:06:16,454 INFO  L262         TraceCheckSpWp]: Trace formula consists of 8061 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-12 02:06:16,491 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:06:16,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:06:16,570 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:06:16,570 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:06:16,570 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33895854]
[2023-11-12 02:06:16,570 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:06:16,571 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134812522]
[2023-11-12 02:06:16,571 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [134812522] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:06:16,571 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:06:16,572 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-12 02:06:16,572 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026928422]
[2023-11-12 02:06:16,572 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:06:16,575 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:06:16,575 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:06:16,578 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:06:16,578 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:06:16,579 INFO  L87              Difference]: Start difference. First operand 2969 states and 4947 transitions. Second operand  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:16,676 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:06:16,677 INFO  L93              Difference]: Finished difference Result 5720 states and 9533 transitions.
[2023-11-12 02:06:16,677 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:06:16,678 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 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 1924
[2023-11-12 02:06:16,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:06:16,685 INFO  L225             Difference]: With dead ends: 5720
[2023-11-12 02:06:16,686 INFO  L226             Difference]: Without dead ends: 2978
[2023-11-12 02:06:16,689 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1923 GetRequests, 1921 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:06:16,690 INFO  L413           NwaCegarLoop]: 4727 mSDtfsCounter, 12 mSDsluCounter, 9442 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14169 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:06:16,690 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14169 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:06:16,696 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2978 states.
[2023-11-12 02:06:16,754 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2970.
[2023-11-12 02:06:16,758 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2970 states, 2969 states have (on average 1.6665543954193331) internal successors, (4948), 2969 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:16,764 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4948 transitions.
[2023-11-12 02:06:16,765 INFO  L78                 Accepts]: Start accepts. Automaton has 2970 states and 4948 transitions. Word has length 1924
[2023-11-12 02:06:16,766 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:06:16,767 INFO  L495      AbstractCegarLoop]: Abstraction has 2970 states and 4948 transitions.
[2023-11-12 02:06:16,768 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:06:16,768 INFO  L276                IsEmpty]: Start isEmpty. Operand 2970 states and 4948 transitions.
[2023-11-12 02:06:16,800 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1925
[2023-11-12 02:06:16,800 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:06:16,802 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-12 02:06:16,839 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-12 02:06:17,018 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-12 02:06:17,019 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:06:17,019 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:06:17,020 INFO  L85        PathProgramCache]: Analyzing trace with hash 849005369, now seen corresponding path program 1 times
[2023-11-12 02:06:17,020 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:06:17,020 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334555112]
[2023-11-12 02:06:17,021 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:17,021 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:06:17,236 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:06:17,236 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111574576]
[2023-11-12 02:06:17,237 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:06:17,237 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:06:17,237 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:06:17,238 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:06:17,258 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8392680-867a-430e-a52a-f68b7c343767/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process