./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop2-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop2-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 31f75e3a6c15bdab3d9f6821e95816cb19b70e3f3431428fbee7732730ce7148
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 02:12:08,730 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 02:12:08,799 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 02:12:08,804 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 02:12:08,804 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 02:12:08,830 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 02:12:08,831 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 02:12:08,832 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 02:12:08,833 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 02:12:08,833 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 02:12:08,834 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 02:12:08,834 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 02:12:08,835 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 02:12:08,836 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 02:12:08,836 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 02:12:08,837 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 02:12:08,837 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 02:12:08,838 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 02:12:08,838 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 02:12:08,839 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 02:12:08,839 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 02:12:08,840 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 02:12:08,840 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 02:12:08,841 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 02:12:08,841 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 02:12:08,842 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 02:12:08,842 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 02:12:08,843 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 02:12:08,843 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:12:08,844 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 02:12:08,844 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 02:12:08,845 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 02:12:08,845 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 02:12:08,846 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 02:12:08,846 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 02:12:08,847 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 02:12:08,847 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 02:12:08,847 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 02:12:08,848 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 02:12:08,848 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_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f75e3a6c15bdab3d9f6821e95816cb19b70e3f3431428fbee7732730ce7148
[2023-11-29 02:12:09,091 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 02:12:09,115 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 02:12:09,118 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 02:12:09,120 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 02:12:09,120 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 02:12:09,122 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop2-func-interl.c
[2023-11-29 02:12:11,983 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 02:12:12,412 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 02:12:12,412 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop2-func-interl.c
[2023-11-29 02:12:12,458 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/data/d87ba2736/f4024c7889cb42c8af5af13e1120e3fb/FLAGff3e46145
[2023-11-29 02:12:12,473 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/data/d87ba2736/f4024c7889cb42c8af5af13e1120e3fb
[2023-11-29 02:12:12,475 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 02:12:12,477 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 02:12:12,479 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 02:12:12,479 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 02:12:12,485 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 02:12:12,485 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:12:12" (1/1) ...
[2023-11-29 02:12:12,487 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1145dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:12, skipping insertion in model container
[2023-11-29 02:12:12,487 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:12:12" (1/1) ...
[2023-11-29 02:12:12,613 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 02:12:12,900 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_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop2-func-interl.c[1176,1189]
[2023-11-29 02:12:13,623 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:12:13,633 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 02:12:13,645 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_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop2-func-interl.c[1176,1189]
[2023-11-29 02:12:14,257 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:12:14,274 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 02:12:14,274 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14 WrapperNode
[2023-11-29 02:12:14,274 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 02:12:14,276 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 02:12:14,276 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 02:12:14,276 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 02:12:14,284 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:14,435 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:16,249 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23136
[2023-11-29 02:12:16,249 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 02:12:16,250 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 02:12:16,250 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 02:12:16,250 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 02:12:16,263 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:16,263 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:16,679 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:16,986 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 02:12:16,986 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:16,986 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:17,359 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:17,459 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:17,603 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:17,685 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:17,983 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 02:12:17,984 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 02:12:17,984 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 02:12:17,984 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 02:12:17,985 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (1/1) ...
[2023-11-29 02:12:17,993 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:12:18,006 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:12:18,020 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 02:12:18,022 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 02:12:18,054 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 02:12:18,054 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 02:12:18,054 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 02:12:18,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 02:12:19,219 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 02:12:19,222 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 02:12:34,489 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 02:12:34,948 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 02:12:34,948 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 02:12:34,951 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:12:34 BoogieIcfgContainer
[2023-11-29 02:12:34,951 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 02:12:34,955 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 02:12:34,955 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 02:12:34,959 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 02:12:34,959 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:12:12" (1/3) ...
[2023-11-29 02:12:34,960 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38288e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:12:34, skipping insertion in model container
[2023-11-29 02:12:34,960 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:14" (2/3) ...
[2023-11-29 02:12:34,961 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38288e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:12:34, skipping insertion in model container
[2023-11-29 02:12:34,961 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:12:34" (3/3) ...
[2023-11-29 02:12:34,963 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.6.prop2-func-interl.c
[2023-11-29 02:12:34,984 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 02:12:34,985 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 02:12:35,112 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 02:12:35,119 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;@555e120c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 02:12:35,119 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 02:12:35,139 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4868 states, 4866 states have (on average 1.6683107274969173) internal successors, (8118), 4867 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:35,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 231
[2023-11-29 02:12:35,160 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:12:35,161 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:12:35,162 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:12:35,167 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:12:35,167 INFO  L85        PathProgramCache]: Analyzing trace with hash 1415868166, now seen corresponding path program 1 times
[2023-11-29 02:12:35,175 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:12:35,176 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564147984]
[2023-11-29 02:12:35,176 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:35,176 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:12:35,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:12:36,720 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:12:36,720 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:12:36,721 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564147984]
[2023-11-29 02:12:36,722 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564147984] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:12:36,722 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:12:36,722 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:12:36,724 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065139574]
[2023-11-29 02:12:36,725 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:12:36,731 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:12:36,732 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:12:36,767 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:12:36,768 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:12:36,785 INFO  L87              Difference]: Start difference. First operand  has 4868 states, 4866 states have (on average 1.6683107274969173) internal successors, (8118), 4867 states have internal predecessors, (8118), 0 states have call successors, (0), 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 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:37,198 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:12:37,198 INFO  L93              Difference]: Finished difference Result 9543 states and 15917 transitions.
[2023-11-29 02:12:37,199 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:12:37,201 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 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 230
[2023-11-29 02:12:37,203 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:12:37,245 INFO  L225             Difference]: With dead ends: 9543
[2023-11-29 02:12:37,245 INFO  L226             Difference]: Without dead ends: 4868
[2023-11-29 02:12:37,258 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:12:37,262 INFO  L413           NwaCegarLoop]: 8111 mSDtfsCounter, 1 mSDsluCounter, 16217 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24328 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:12:37,263 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24328 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:12:37,297 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4868 states.
[2023-11-29 02:12:37,447 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4868.
[2023-11-29 02:12:37,464 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4868 states, 4867 states have (on average 1.6675570166426956) internal successors, (8116), 4867 states have internal predecessors, (8116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:37,492 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4868 states to 4868 states and 8116 transitions.
[2023-11-29 02:12:37,493 INFO  L78                 Accepts]: Start accepts. Automaton has 4868 states and 8116 transitions. Word has length 230
[2023-11-29 02:12:37,495 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:12:37,495 INFO  L495      AbstractCegarLoop]: Abstraction has 4868 states and 8116 transitions.
[2023-11-29 02:12:37,496 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:37,496 INFO  L276                IsEmpty]: Start isEmpty. Operand 4868 states and 8116 transitions.
[2023-11-29 02:12:37,503 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2023-11-29 02:12:37,503 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:12:37,504 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:12:37,504 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 02:12:37,504 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:12:37,505 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:12:37,505 INFO  L85        PathProgramCache]: Analyzing trace with hash 943966490, now seen corresponding path program 1 times
[2023-11-29 02:12:37,506 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:12:37,506 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761455463]
[2023-11-29 02:12:37,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:37,507 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:12:37,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:12:38,333 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:12:38,334 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:12:38,334 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761455463]
[2023-11-29 02:12:38,335 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761455463] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:12:38,335 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:12:38,335 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:12:38,336 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798567637]
[2023-11-29 02:12:38,336 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:12:38,338 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:12:38,338 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:12:38,340 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:12:38,340 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:12:38,341 INFO  L87              Difference]: Start difference. First operand 4868 states and 8116 transitions. Second operand  has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:38,681 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:12:38,681 INFO  L93              Difference]: Finished difference Result 9546 states and 15915 transitions.
[2023-11-29 02:12:38,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:12:38,682 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 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 231
[2023-11-29 02:12:38,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:12:38,713 INFO  L225             Difference]: With dead ends: 9546
[2023-11-29 02:12:38,713 INFO  L226             Difference]: Without dead ends: 4871
[2023-11-29 02:12:38,721 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:12:38,723 INFO  L413           NwaCegarLoop]: 8111 mSDtfsCounter, 1 mSDsluCounter, 16215 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24326 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:12:38,723 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24326 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:12:38,736 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4871 states.
[2023-11-29 02:12:38,860 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4870.
[2023-11-29 02:12:38,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4870 states, 4869 states have (on average 1.66728280961183) internal successors, (8118), 4869 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:38,904 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4870 states to 4870 states and 8118 transitions.
[2023-11-29 02:12:38,904 INFO  L78                 Accepts]: Start accepts. Automaton has 4870 states and 8118 transitions. Word has length 231
[2023-11-29 02:12:38,905 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:12:38,905 INFO  L495      AbstractCegarLoop]: Abstraction has 4870 states and 8118 transitions.
[2023-11-29 02:12:38,906 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:38,906 INFO  L276                IsEmpty]: Start isEmpty. Operand 4870 states and 8118 transitions.
[2023-11-29 02:12:38,910 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 233
[2023-11-29 02:12:38,911 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:12:38,911 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:12:38,911 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 02:12:38,912 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:12:38,912 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:12:38,913 INFO  L85        PathProgramCache]: Analyzing trace with hash -1012240992, now seen corresponding path program 1 times
[2023-11-29 02:12:38,913 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:12:38,913 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615917491]
[2023-11-29 02:12:38,914 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:38,914 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:12:39,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:12:39,642 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:12:39,643 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:12:39,643 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615917491]
[2023-11-29 02:12:39,643 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615917491] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:12:39,644 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:12:39,644 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:12:39,644 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898315495]
[2023-11-29 02:12:39,645 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:12:39,646 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:12:39,646 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:12:39,647 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:12:39,647 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:12:39,648 INFO  L87              Difference]: Start difference. First operand 4870 states and 8118 transitions. Second operand  has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:40,155 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:12:40,156 INFO  L93              Difference]: Finished difference Result 14214 states and 23697 transitions.
[2023-11-29 02:12:40,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:12:40,157 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 232
[2023-11-29 02:12:40,158 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:12:40,216 INFO  L225             Difference]: With dead ends: 14214
[2023-11-29 02:12:40,216 INFO  L226             Difference]: Without dead ends: 9537
[2023-11-29 02:12:40,225 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:12:40,227 INFO  L413           NwaCegarLoop]: 8342 mSDtfsCounter, 7779 mSDsluCounter, 16442 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7779 SdHoareTripleChecker+Valid, 24784 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:12:40,228 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7779 Valid, 24784 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:12:40,247 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9537 states.
[2023-11-29 02:12:40,398 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9537 to 4872.
[2023-11-29 02:12:40,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4872 states, 4871 states have (on average 1.6670088277561075) internal successors, (8120), 4871 states have internal predecessors, (8120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:40,430 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 8120 transitions.
[2023-11-29 02:12:40,431 INFO  L78                 Accepts]: Start accepts. Automaton has 4872 states and 8120 transitions. Word has length 232
[2023-11-29 02:12:40,431 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:12:40,431 INFO  L495      AbstractCegarLoop]: Abstraction has 4872 states and 8120 transitions.
[2023-11-29 02:12:40,432 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:40,433 INFO  L276                IsEmpty]: Start isEmpty. Operand 4872 states and 8120 transitions.
[2023-11-29 02:12:40,437 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 234
[2023-11-29 02:12:40,437 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:12:40,437 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:12:40,438 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 02:12:40,438 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:12:40,439 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:12:40,439 INFO  L85        PathProgramCache]: Analyzing trace with hash 285208448, now seen corresponding path program 1 times
[2023-11-29 02:12:40,439 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:12:40,440 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073230714]
[2023-11-29 02:12:40,440 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:40,440 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:12:40,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:12:41,295 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:12:41,295 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:12:41,296 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073230714]
[2023-11-29 02:12:41,296 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073230714] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:12:41,296 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:12:41,296 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:12:41,296 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079199730]
[2023-11-29 02:12:41,297 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:12:41,297 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:12:41,298 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:12:41,298 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:12:41,299 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:12:41,300 INFO  L87              Difference]: Start difference. First operand 4872 states and 8120 transitions. Second operand  has 5 states, 5 states have (on average 46.6) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:41,820 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:12:41,820 INFO  L93              Difference]: Finished difference Result 14361 states and 23938 transitions.
[2023-11-29 02:12:41,821 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:12:41,821 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 46.6) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 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 233
[2023-11-29 02:12:41,822 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:12:41,863 INFO  L225             Difference]: With dead ends: 14361
[2023-11-29 02:12:41,863 INFO  L226             Difference]: Without dead ends: 9682
[2023-11-29 02:12:41,872 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:12:41,873 INFO  L413           NwaCegarLoop]: 8338 mSDtfsCounter, 31475 mSDsluCounter, 16213 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31475 SdHoareTripleChecker+Valid, 24551 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:12:41,874 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31475 Valid, 24551 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:12:41,890 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9682 states.
[2023-11-29 02:12:42,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9682 to 5013.
[2023-11-29 02:12:42,025 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5013 states, 5012 states have (on average 1.666999201915403) internal successors, (8355), 5012 states have internal predecessors, (8355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:42,037 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 8355 transitions.
[2023-11-29 02:12:42,037 INFO  L78                 Accepts]: Start accepts. Automaton has 5013 states and 8355 transitions. Word has length 233
[2023-11-29 02:12:42,038 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:12:42,038 INFO  L495      AbstractCegarLoop]: Abstraction has 5013 states and 8355 transitions.
[2023-11-29 02:12:42,038 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 46.6) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:12:42,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 5013 states and 8355 transitions.
[2023-11-29 02:12:42,233 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3311
[2023-11-29 02:12:42,233 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:12:42,235 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 02:12:42,236 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 02:12:42,236 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:12:42,236 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:12:42,238 INFO  L85        PathProgramCache]: Analyzing trace with hash 1354522112, now seen corresponding path program 1 times
[2023-11-29 02:12:42,238 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:12:42,238 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814023505]
[2023-11-29 02:12:42,239 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:42,239 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:12:42,770 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:12:42,770 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230388683]
[2023-11-29 02:12:42,771 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:12:42,772 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:12:42,772 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:12:42,776 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:12:42,784 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 02:12:47,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:12:48,057 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18677 conjuncts, 102 conjunts are in the unsatisfiable core
[2023-11-29 02:12:48,172 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:12:55,070 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:12:55,070 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:12:55,070 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:12:55,070 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814023505]
[2023-11-29 02:12:55,070 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:12:55,071 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230388683]
[2023-11-29 02:12:55,071 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [230388683] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:12:55,071 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:12:55,072 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39
[2023-11-29 02:12:55,072 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385411450]
[2023-11-29 02:12:55,073 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:12:55,077 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2023-11-29 02:12:55,078 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:12:55,082 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2023-11-29 02:12:55,083 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482
[2023-11-29 02:12:55,084 INFO  L87              Difference]: Start difference. First operand 5013 states and 8355 transitions. Second operand  has 39 states, 39 states have (on average 84.87179487179488) internal successors, (3310), 39 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:13:54,056 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:13:54,056 INFO  L93              Difference]: Finished difference Result 98492 states and 164137 transitions.
[2023-11-29 02:13:54,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 639 states. 
[2023-11-29 02:13:54,057 INFO  L78                 Accepts]: Start accepts. Automaton has  has 39 states, 39 states have (on average 84.87179487179488) internal successors, (3310), 39 states have internal predecessors, (3310), 0 states have call successors, (0), 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 3310
[2023-11-29 02:13:54,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:13:54,213 INFO  L225             Difference]: With dead ends: 98492
[2023-11-29 02:13:54,213 INFO  L226             Difference]: Without dead ends: 93813
[2023-11-29 02:13:54,431 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3983 GetRequests, 3310 SyntacticMatches, 0 SemanticMatches, 673 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216603 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=72844, Invalid=382106, Unknown=0, NotChecked=0, Total=454950
[2023-11-29 02:13:54,432 INFO  L413           NwaCegarLoop]: 15719 mSDtfsCounter, 1667101 mSDsluCounter, 536737 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667101 SdHoareTripleChecker+Valid, 552456 SdHoareTripleChecker+Invalid, 3469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.1s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:13:54,433 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1667101 Valid, 552456 Invalid, 3469 Unknown, 0 Unchecked, 3.1s Time], IncrementalHoareTripleChecker [311 Valid, 3158 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2023-11-29 02:13:54,503 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 93813 states.
[2023-11-29 02:13:54,973 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 93813 to 7289.
[2023-11-29 02:13:54,984 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7289 states, 7288 states have (on average 1.6658891328210756) internal successors, (12141), 7288 states have internal predecessors, (12141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:13:54,998 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 12141 transitions.
[2023-11-29 02:13:54,999 INFO  L78                 Accepts]: Start accepts. Automaton has 7289 states and 12141 transitions. Word has length 3310
[2023-11-29 02:13:55,005 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:13:55,005 INFO  L495      AbstractCegarLoop]: Abstraction has 7289 states and 12141 transitions.
[2023-11-29 02:13:55,006 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 39 states, 39 states have (on average 84.87179487179488) internal successors, (3310), 39 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:13:55,006 INFO  L276                IsEmpty]: Start isEmpty. Operand 7289 states and 12141 transitions.
[2023-11-29 02:13:55,101 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 02:13:55,101 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:13:55,104 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 02:13:55,195 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 02:13:55,304 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:13:55,305 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:13:55,305 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:13:55,308 INFO  L85        PathProgramCache]: Analyzing trace with hash 1625783002, now seen corresponding path program 1 times
[2023-11-29 02:13:55,308 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:13:55,308 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205040118]
[2023-11-29 02:13:55,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:13:55,309 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:13:55,650 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:13:55,650 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546149616]
[2023-11-29 02:13:55,651 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:13:55,651 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:13:55,651 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:13:55,652 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:13:55,653 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 02:14:00,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:14:00,582 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 39 conjunts are in the unsatisfiable core
[2023-11-29 02:14:00,666 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:14:06,956 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:14:06,957 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:14:06,957 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:14:06,957 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205040118]
[2023-11-29 02:14:06,957 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:14:06,957 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546149616]
[2023-11-29 02:14:06,957 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [546149616] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:14:06,958 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:14:06,959 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2023-11-29 02:14:06,959 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999965956]
[2023-11-29 02:14:06,959 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:14:06,962 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-29 02:14:06,962 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:14:06,965 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-29 02:14:06,965 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156
[2023-11-29 02:14:06,966 INFO  L87              Difference]: Start difference. First operand 7289 states and 12141 transitions. Second operand  has 13 states, 13 states have (on average 254.69230769230768) internal successors, (3311), 13 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:14:08,448 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:14:08,448 INFO  L93              Difference]: Finished difference Result 28069 states and 46726 transitions.
[2023-11-29 02:14:08,449 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2023-11-29 02:14:08,449 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 254.69230769230768) internal successors, (3311), 13 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 02:14:08,454 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:14:08,480 INFO  L225             Difference]: With dead ends: 28069
[2023-11-29 02:14:08,480 INFO  L226             Difference]: Without dead ends: 20973
[2023-11-29 02:14:08,488 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3340 GetRequests, 3308 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122
[2023-11-29 02:14:08,489 INFO  L413           NwaCegarLoop]: 12391 mSDtfsCounter, 50174 mSDsluCounter, 110540 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50174 SdHoareTripleChecker+Valid, 122931 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-29 02:14:08,490 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50174 Valid, 122931 Invalid, 322 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-29 02:14:08,507 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20973 states.
[2023-11-29 02:14:08,657 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20973 to 11397.
[2023-11-29 02:14:08,671 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11397 states, 11396 states have (on average 1.6656721656721656) internal successors, (18982), 11396 states have internal predecessors, (18982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:14:08,686 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11397 states to 11397 states and 18982 transitions.
[2023-11-29 02:14:08,686 INFO  L78                 Accepts]: Start accepts. Automaton has 11397 states and 18982 transitions. Word has length 3311
[2023-11-29 02:14:08,689 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:14:08,689 INFO  L495      AbstractCegarLoop]: Abstraction has 11397 states and 18982 transitions.
[2023-11-29 02:14:08,690 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 254.69230769230768) internal successors, (3311), 13 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:14:08,691 INFO  L276                IsEmpty]: Start isEmpty. Operand 11397 states and 18982 transitions.
[2023-11-29 02:14:08,763 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 02:14:08,763 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:14:08,765 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 02:14:08,839 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-29 02:14:08,966 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-29 02:14:08,966 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:14:08,967 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:14:08,968 INFO  L85        PathProgramCache]: Analyzing trace with hash 1109691852, now seen corresponding path program 1 times
[2023-11-29 02:14:08,969 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:14:08,969 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466598441]
[2023-11-29 02:14:08,969 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:14:08,970 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:14:09,376 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:14:09,376 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972274017]
[2023-11-29 02:14:09,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:14:09,378 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:14:09,378 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:14:09,381 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:14:09,382 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 02:14:13,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:14:13,368 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 39 conjunts are in the unsatisfiable core
[2023-11-29 02:14:13,433 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:14:19,895 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:14:19,895 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:14:19,896 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:14:19,896 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466598441]
[2023-11-29 02:14:19,896 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:14:19,896 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972274017]
[2023-11-29 02:14:19,896 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [972274017] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:14:19,896 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:14:19,897 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2023-11-29 02:14:19,898 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025340322]
[2023-11-29 02:14:19,898 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:14:19,902 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-29 02:14:19,902 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:14:19,906 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-29 02:14:19,906 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240
[2023-11-29 02:14:19,908 INFO  L87              Difference]: Start difference. First operand 11397 states and 18982 transitions. Second operand  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:14:24,164 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:14:30,693 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:14:42,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:14:42,006 INFO  L93              Difference]: Finished difference Result 103095 states and 171720 transitions.
[2023-11-29 02:14:42,006 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2023-11-29 02:14:42,007 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 02:14:42,010 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:14:42,114 INFO  L225             Difference]: With dead ends: 103095
[2023-11-29 02:14:42,114 INFO  L226             Difference]: Without dead ends: 91891
[2023-11-29 02:14:42,131 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3348 GetRequests, 3298 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=521, Invalid=2131, Unknown=0, NotChecked=0, Total=2652
[2023-11-29 02:14:42,132 INFO  L413           NwaCegarLoop]: 15712 mSDtfsCounter, 126866 mSDsluCounter, 195129 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126866 SdHoareTripleChecker+Valid, 210841 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:14:42,132 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [126866 Valid, 210841 Invalid, 1507 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [4 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time]
[2023-11-29 02:14:42,209 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91891 states.
[2023-11-29 02:14:42,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91891 to 22491.
[2023-11-29 02:14:42,731 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22491 states, 22490 states have (on average 1.6656291685193418) internal successors, (37460), 22490 states have internal predecessors, (37460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:14:42,770 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22491 states to 22491 states and 37460 transitions.
[2023-11-29 02:14:42,771 INFO  L78                 Accepts]: Start accepts. Automaton has 22491 states and 37460 transitions. Word has length 3311
[2023-11-29 02:14:42,774 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:14:42,774 INFO  L495      AbstractCegarLoop]: Abstraction has 22491 states and 37460 transitions.
[2023-11-29 02:14:42,775 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:14:42,775 INFO  L276                IsEmpty]: Start isEmpty. Operand 22491 states and 37460 transitions.
[2023-11-29 02:14:42,903 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 02:14:42,903 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:14:42,906 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 02:14:42,976 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 02:14:43,108 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-29 02:14:43,109 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:14:43,109 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:14:43,110 INFO  L85        PathProgramCache]: Analyzing trace with hash -1284496578, now seen corresponding path program 1 times
[2023-11-29 02:14:43,110 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:14:43,111 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94825503]
[2023-11-29 02:14:43,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:14:43,111 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:14:43,410 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:14:43,410 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395099960]
[2023-11-29 02:14:43,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:14:43,412 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:14:43,412 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:14:43,413 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:14:43,414 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 02:14:47,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:14:47,655 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 39 conjunts are in the unsatisfiable core
[2023-11-29 02:14:47,720 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:14:53,504 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:14:53,504 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:14:53,504 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:14:53,504 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94825503]
[2023-11-29 02:14:53,504 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:14:53,505 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395099960]
[2023-11-29 02:14:53,505 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395099960] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:14:53,505 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:14:53,506 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2023-11-29 02:14:53,506 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011477986]
[2023-11-29 02:14:53,506 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:14:53,510 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-29 02:14:53,510 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:14:53,514 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-29 02:14:53,514 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240
[2023-11-29 02:14:53,516 INFO  L87              Difference]: Start difference. First operand 22491 states and 37460 transitions. Second operand  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:14:58,291 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:15:00,804 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:15:16,954 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:15:16,954 INFO  L93              Difference]: Finished difference Result 179745 states and 299406 transitions.
[2023-11-29 02:15:16,954 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2023-11-29 02:15:16,955 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 02:15:16,958 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:15:17,066 INFO  L225             Difference]: With dead ends: 179745
[2023-11-29 02:15:17,066 INFO  L226             Difference]: Without dead ends: 157447
[2023-11-29 02:15:17,099 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3348 GetRequests, 3298 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=521, Invalid=2131, Unknown=0, NotChecked=0, Total=2652
[2023-11-29 02:15:17,099 INFO  L413           NwaCegarLoop]: 15699 mSDtfsCounter, 146564 mSDsluCounter, 170294 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146564 SdHoareTripleChecker+Valid, 185993 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:15:17,100 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [146564 Valid, 185993 Invalid, 1345 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [4 Valid, 1340 Invalid, 1 Unknown, 0 Unchecked, 20.5s Time]
[2023-11-29 02:15:17,199 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 157447 states.
[2023-11-29 02:15:17,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 157447 to 44371.
[2023-11-29 02:15:17,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44371 states, 44370 states have (on average 1.6656750056344376) internal successors, (73906), 44370 states have internal predecessors, (73906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:15:17,960 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44371 states to 44371 states and 73906 transitions.
[2023-11-29 02:15:17,961 INFO  L78                 Accepts]: Start accepts. Automaton has 44371 states and 73906 transitions. Word has length 3311
[2023-11-29 02:15:17,963 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:15:17,963 INFO  L495      AbstractCegarLoop]: Abstraction has 44371 states and 73906 transitions.
[2023-11-29 02:15:17,964 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:15:17,964 INFO  L276                IsEmpty]: Start isEmpty. Operand 44371 states and 73906 transitions.
[2023-11-29 02:15:18,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 02:15:18,061 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:15:18,063 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 02:15:18,118 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 02:15:18,263 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:15:18,264 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:15:18,264 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:15:18,265 INFO  L85        PathProgramCache]: Analyzing trace with hash 1333680944, now seen corresponding path program 1 times
[2023-11-29 02:15:18,265 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:15:18,265 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266744385]
[2023-11-29 02:15:18,266 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:15:18,266 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:15:18,807 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:15:18,807 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554148001]
[2023-11-29 02:15:18,808 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:15:18,808 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:15:18,808 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:15:18,809 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:15:18,812 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 02:15:23,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:15:23,389 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 39 conjunts are in the unsatisfiable core
[2023-11-29 02:15:23,488 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:15:29,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:15:29,168 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:15:29,168 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:15:29,168 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266744385]
[2023-11-29 02:15:29,169 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:15:29,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554148001]
[2023-11-29 02:15:29,169 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554148001] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:15:29,169 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:15:29,170 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2023-11-29 02:15:29,170 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102946790]
[2023-11-29 02:15:29,170 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:15:29,174 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-29 02:15:29,174 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:15:29,177 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-29 02:15:29,177 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240
[2023-11-29 02:15:29,178 INFO  L87              Difference]: Start difference. First operand 44371 states and 73906 transitions. Second operand  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:15:31,105 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:15:44,452 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:15:57,471 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:16:01,129 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:16:02,748 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:16:02,748 INFO  L93              Difference]: Finished difference Result 332389 states and 553698 transitions.
[2023-11-29 02:16:02,749 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2023-11-29 02:16:02,749 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 02:16:02,752 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:16:03,070 INFO  L225             Difference]: With dead ends: 332389
[2023-11-29 02:16:03,070 INFO  L226             Difference]: Without dead ends: 288211
[2023-11-29 02:16:03,109 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3348 GetRequests, 3298 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=521, Invalid=2131, Unknown=0, NotChecked=0, Total=2652
[2023-11-29 02:16:03,110 INFO  L413           NwaCegarLoop]: 15684 mSDtfsCounter, 136525 mSDsluCounter, 194589 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136525 SdHoareTripleChecker+Valid, 210273 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:16:03,111 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [136525 Valid, 210273 Invalid, 1501 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [4 Valid, 1496 Invalid, 1 Unknown, 0 Unchecked, 30.4s Time]
[2023-11-29 02:16:03,264 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 288211 states.
[2023-11-29 02:16:04,697 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 288211 to 87993.
[2023-11-29 02:16:04,764 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 87993 states, 87992 states have (on average 1.6657423402127467) internal successors, (146572), 87992 states have internal predecessors, (146572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:16:04,870 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 87993 states to 87993 states and 146572 transitions.
[2023-11-29 02:16:04,871 INFO  L78                 Accepts]: Start accepts. Automaton has 87993 states and 146572 transitions. Word has length 3311
[2023-11-29 02:16:04,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:16:04,873 INFO  L495      AbstractCegarLoop]: Abstraction has 87993 states and 146572 transitions.
[2023-11-29 02:16:04,874 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:16:04,874 INFO  L276                IsEmpty]: Start isEmpty. Operand 87993 states and 146572 transitions.
[2023-11-29 02:16:04,995 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 02:16:04,995 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:16:04,997 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 02:16:05,052 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 02:16:05,197 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:16:05,198 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:16:05,198 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:16:05,199 INFO  L85        PathProgramCache]: Analyzing trace with hash -1586801246, now seen corresponding path program 1 times
[2023-11-29 02:16:05,199 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:16:05,199 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355649886]
[2023-11-29 02:16:05,200 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:16:05,200 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:16:05,670 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:16:05,671 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767128383]
[2023-11-29 02:16:05,671 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:16:05,671 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:16:05,672 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:16:05,672 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:16:05,677 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 02:16:09,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:16:10,094 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 39 conjunts are in the unsatisfiable core
[2023-11-29 02:16:10,207 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:16:15,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:16:15,867 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:16:15,868 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:16:15,868 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355649886]
[2023-11-29 02:16:15,868 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:16:15,868 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767128383]
[2023-11-29 02:16:15,868 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [767128383] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:16:15,868 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:16:15,869 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2023-11-29 02:16:15,870 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159594159]
[2023-11-29 02:16:15,870 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:16:15,872 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-29 02:16:15,872 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:16:15,875 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-29 02:16:15,875 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240
[2023-11-29 02:16:15,876 INFO  L87              Difference]: Start difference. First operand 87993 states and 146572 transitions. Second operand  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:16:27,172 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:16:38,175 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:16:41,692 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 02:16:43,799 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:16:43,799 INFO  L93              Difference]: Finished difference Result 636759 states and 1060778 transitions.
[2023-11-29 02:16:43,799 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2023-11-29 02:16:43,800 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 02:16:43,803 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:16:44,344 INFO  L225             Difference]: With dead ends: 636759
[2023-11-29 02:16:44,345 INFO  L226             Difference]: Without dead ends: 548959
[2023-11-29 02:16:44,424 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3348 GetRequests, 3298 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=521, Invalid=2131, Unknown=0, NotChecked=0, Total=2652
[2023-11-29 02:16:44,425 INFO  L413           NwaCegarLoop]: 15669 mSDtfsCounter, 146438 mSDsluCounter, 170815 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146438 SdHoareTripleChecker+Valid, 186484 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:16:44,425 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [146438 Valid, 186484 Invalid, 1381 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [4 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 24.1s Time]
[2023-11-29 02:16:44,883 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 548959 states.
[2023-11-29 02:16:47,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 548959 to 174955.
[2023-11-29 02:16:47,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 174955 states, 174954 states have (on average 1.6658207300204626) internal successors, (291442), 174954 states have internal predecessors, (291442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:16:48,163 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 174955 states to 174955 states and 291442 transitions.
[2023-11-29 02:16:48,163 INFO  L78                 Accepts]: Start accepts. Automaton has 174955 states and 291442 transitions. Word has length 3311
[2023-11-29 02:16:48,166 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:16:48,166 INFO  L495      AbstractCegarLoop]: Abstraction has 174955 states and 291442 transitions.
[2023-11-29 02:16:48,167 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 206.9375) internal successors, (3311), 16 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:16:48,167 INFO  L276                IsEmpty]: Start isEmpty. Operand 174955 states and 291442 transitions.
[2023-11-29 02:16:48,571 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 02:16:48,571 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:16:48,573 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 02:16:48,628 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-29 02:16:48,773 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 02:16:48,774 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:16:48,774 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:16:48,776 INFO  L85        PathProgramCache]: Analyzing trace with hash 918237844, now seen corresponding path program 1 times
[2023-11-29 02:16:48,776 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:16:48,776 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378133133]
[2023-11-29 02:16:48,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:16:48,777 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:16:49,136 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:16:49,136 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037886350]
[2023-11-29 02:16:49,137 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:16:49,137 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:16:49,138 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:16:49,138 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:16:49,140 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 02:16:53,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:16:53,651 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:16:53,729 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:16:55,325 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:16:55,325 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:16:55,325 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:16:55,325 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378133133]
[2023-11-29 02:16:55,325 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:16:55,325 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037886350]
[2023-11-29 02:16:55,325 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037886350] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:16:55,325 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:16:55,326 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:16:55,326 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228646734]
[2023-11-29 02:16:55,327 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:16:55,329 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:16:55,329 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:16:55,332 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:16:55,332 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:16:55,333 INFO  L87              Difference]: Start difference. First operand 174955 states and 291442 transitions. Second operand  has 8 states, 8 states have (on average 413.875) internal successors, (3311), 8 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:16:57,753 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:16:57,753 INFO  L93              Difference]: Finished difference Result 785951 states and 1309396 transitions.
[2023-11-29 02:16:57,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 02:16:57,754 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 413.875) internal successors, (3311), 8 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 02:16:57,758 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:16:58,277 INFO  L225             Difference]: With dead ends: 785951
[2023-11-29 02:16:58,277 INFO  L226             Difference]: Without dead ends: 611189
[2023-11-29 02:16:58,399 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3322 GetRequests, 3307 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272
[2023-11-29 02:16:58,400 INFO  L413           NwaCegarLoop]: 15756 mSDtfsCounter, 29276 mSDsluCounter, 66926 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29276 SdHoareTripleChecker+Valid, 82682 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:16:58,401 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [29276 Valid, 82682 Invalid, 83 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:16:58,984 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 611189 states.
[2023-11-29 02:17:02,656 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 611189 to 305771.
[2023-11-29 02:17:02,820 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 305771 states, 305770 states have (on average 1.6659384504693069) internal successors, (509394), 305770 states have internal predecessors, (509394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:17:03,228 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 305771 states to 305771 states and 509394 transitions.
[2023-11-29 02:17:03,228 INFO  L78                 Accepts]: Start accepts. Automaton has 305771 states and 509394 transitions. Word has length 3311
[2023-11-29 02:17:03,230 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:17:03,230 INFO  L495      AbstractCegarLoop]: Abstraction has 305771 states and 509394 transitions.
[2023-11-29 02:17:03,231 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 413.875) internal successors, (3311), 8 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:17:03,231 INFO  L276                IsEmpty]: Start isEmpty. Operand 305771 states and 509394 transitions.
[2023-11-29 02:17:03,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 02:17:03,887 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:17:03,889 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 02:17:03,941 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 02:17:04,089 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:17:04,090 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:17:04,090 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:17:04,091 INFO  L85        PathProgramCache]: Analyzing trace with hash 827986438, now seen corresponding path program 1 times
[2023-11-29 02:17:04,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:17:04,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054222935]
[2023-11-29 02:17:04,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:17:04,092 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:17:04,593 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:17:04,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956074355]
[2023-11-29 02:17:04,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:17:04,595 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:17:04,595 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:17:04,596 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:17:04,597 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 02:17:08,940 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:17:09,059 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-11-29 02:17:09,133 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:17:10,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:17:10,886 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:17:10,887 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:17:10,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054222935]
[2023-11-29 02:17:10,887 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:17:10,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956074355]
[2023-11-29 02:17:10,887 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956074355] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:17:10,887 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:17:10,888 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-29 02:17:10,888 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202405243]
[2023-11-29 02:17:10,888 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:17:10,892 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-29 02:17:10,892 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:17:10,896 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-29 02:17:10,896 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-29 02:17:10,897 INFO  L87              Difference]: Start difference. First operand 305771 states and 509394 transitions. Second operand  has 9 states, 9 states have (on average 367.8888888888889) internal successors, (3311), 9 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:17:16,903 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:17:16,903 INFO  L93              Difference]: Finished difference Result 2004197 states and 3339549 transitions.
[2023-11-29 02:17:16,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-11-29 02:17:16,904 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 367.8888888888889) internal successors, (3311), 9 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 02:17:16,908 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:17:18,757 INFO  L225             Difference]: With dead ends: 2004197
[2023-11-29 02:17:18,757 INFO  L226             Difference]: Without dead ends: 1698619
[2023-11-29 02:17:18,999 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3308 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506
[2023-11-29 02:17:19,000 INFO  L413           NwaCegarLoop]: 23525 mSDtfsCounter, 40664 mSDsluCounter, 121574 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40664 SdHoareTripleChecker+Valid, 145099 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:17:19,000 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [40664 Valid, 145099 Invalid, 139 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 02:17:20,290 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1698619 states.
[2023-11-29 02:17:29,870 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698619 to 567403.
[2023-11-29 02:17:30,221 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 567403 states, 567402 states have (on average 1.666123841650188) internal successors, (945362), 567402 states have internal predecessors, (945362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:17:31,677 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 567403 states to 567403 states and 945362 transitions.
[2023-11-29 02:17:31,678 INFO  L78                 Accepts]: Start accepts. Automaton has 567403 states and 945362 transitions. Word has length 3311
[2023-11-29 02:17:31,680 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:17:31,680 INFO  L495      AbstractCegarLoop]: Abstraction has 567403 states and 945362 transitions.
[2023-11-29 02:17:31,681 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 367.8888888888889) internal successors, (3311), 9 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:17:31,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 567403 states and 945362 transitions.
[2023-11-29 02:17:32,812 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-29 02:17:32,812 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:17:32,814 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 02:17:32,865 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-29 02:17:33,014 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 02:17:33,014 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:17:33,015 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:17:33,016 INFO  L85        PathProgramCache]: Analyzing trace with hash 1503400952, now seen corresponding path program 1 times
[2023-11-29 02:17:33,016 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:17:33,016 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138389475]
[2023-11-29 02:17:33,016 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:17:33,016 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:17:33,311 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:17:33,311 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595293980]
[2023-11-29 02:17:33,312 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:17:33,312 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:17:33,312 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:17:33,313 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:17:33,314 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b3ce7d0-fe0a-41b1-8d73-2374c3a83d88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 02:17:37,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:17:37,554 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:17:37,612 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:17:39,255 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 02:17:39,255 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:17:39,255 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:17:39,255 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138389475]
[2023-11-29 02:17:39,255 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:17:39,255 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595293980]
[2023-11-29 02:17:39,256 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595293980] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:17:39,256 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:17:39,257 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:17:39,257 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988549797]
[2023-11-29 02:17:39,257 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:17:39,261 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:17:39,261 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:17:39,264 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:17:39,265 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:17:39,265 INFO  L87              Difference]: Start difference. First operand 567403 states and 945362 transitions. Second operand  has 8 states, 8 states have (on average 413.875) internal successors, (3311), 8 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:17:47,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:17:47,033 INFO  L93              Difference]: Finished difference Result 2745119 states and 4574548 transitions.
[2023-11-29 02:17:47,033 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-29 02:17:47,034 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 413.875) internal successors, (3311), 8 states have internal predecessors, (3311), 0 states have call successors, (0), 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 3311
[2023-11-29 02:17:47,037 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:17:49,359 INFO  L225             Difference]: With dead ends: 2745119
[2023-11-29 02:17:49,359 INFO  L226             Difference]: Without dead ends: 2177909
[2023-11-29 02:17:49,733 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3322 GetRequests, 3307 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272
[2023-11-29 02:17:49,734 INFO  L413           NwaCegarLoop]: 15726 mSDtfsCounter, 29442 mSDsluCounter, 66921 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29442 SdHoareTripleChecker+Valid, 82647 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:17:49,734 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [29442 Valid, 82647 Invalid, 83 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:17:51,437 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2177909 states.