./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop5-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version e7bb482b
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_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop5-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 b9473440e39abfc48e5769115500085b6ee05c0bbb6823c048851b56545845dd
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 22:59:22,609 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 22:59:22,727 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 22:59:22,736 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 22:59:22,736 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 22:59:22,784 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 22:59:22,785 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 22:59:22,786 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 22:59:22,787 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 22:59:22,794 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 22:59:22,795 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 22:59:22,795 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 22:59:22,795 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 22:59:22,797 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 22:59:22,798 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 22:59:22,798 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 22:59:22,799 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 22:59:22,799 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 22:59:22,800 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 22:59:22,800 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 22:59:22,800 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 22:59:22,801 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 22:59:22,802 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 22:59:22,802 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 22:59:22,803 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 22:59:22,803 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:59:22,804 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 22:59:22,804 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 22:59:22,805 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 22:59:22,805 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 22:59:22,806 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 22:59:22,807 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 22:59:22,807 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 22:59:22,807 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 22:59:22,807 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 22:59:22,808 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 22:59:22,808 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_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/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_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 -> b9473440e39abfc48e5769115500085b6ee05c0bbb6823c048851b56545845dd
[2023-11-06 22:59:23,111 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 22:59:23,144 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 22:59:23,147 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 22:59:23,149 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 22:59:23,150 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 22:59:23,152 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop5-func-interl.c
[2023-11-06 22:59:26,339 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 22:59:27,066 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 22:59:27,068 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop5-func-interl.c
[2023-11-06 22:59:27,124 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/data/303440ea4/4f8d206fbdb54e179daeeb31c930fdb5/FLAGa5471f26a
[2023-11-06 22:59:27,142 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/data/303440ea4/4f8d206fbdb54e179daeeb31c930fdb5
[2023-11-06 22:59:27,153 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 22:59:27,155 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 22:59:27,157 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 22:59:27,158 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 22:59:27,164 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 22:59:27,165 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:59:27" (1/1) ...
[2023-11-06 22:59:27,166 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1322d749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:27, skipping insertion in model container
[2023-11-06 22:59:27,166 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:59:27" (1/1) ...
[2023-11-06 22:59:27,418 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 22:59:27,742 WARN  L240   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop5-func-interl.c[1179,1192]
[2023-11-06 22:59:29,322 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:59:29,335 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 22:59:29,348 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_01e92547-596b-4eef-aca5-e050af6907a2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop5-func-interl.c[1179,1192]
[2023-11-06 22:59:30,822 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:59:30,838 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 22:59:30,839 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30 WrapperNode
[2023-11-06 22:59:30,840 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 22:59:30,841 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 22:59:30,841 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 22:59:30,841 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 22:59:30,850 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:31,217 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:35,591 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48910
[2023-11-06 22:59:35,592 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 22:59:35,592 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 22:59:35,593 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 22:59:35,593 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 22:59:35,600 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:35,600 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:36,950 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:36,950 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:38,406 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:38,590 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:39,167 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:39,334 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:40,141 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 22:59:40,142 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 22:59:40,143 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 22:59:40,143 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 22:59:40,144 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (1/1) ...
[2023-11-06 22:59:40,157 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:59:40,172 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:59:40,192 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 22:59:40,194 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 22:59:40,228 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 22:59:40,228 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 22:59:40,228 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 22:59:40,228 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 22:59:42,467 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 22:59:42,469 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 23:00:10,473 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 23:00:10,540 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 23:00:10,540 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 23:00:10,551 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:10 BoogieIcfgContainer
[2023-11-06 23:00:10,551 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 23:00:10,554 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 23:00:10,554 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 23:00:10,557 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 23:00:10,558 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:59:27" (1/3) ...
[2023-11-06 23:00:10,558 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14219f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:10, skipping insertion in model container
[2023-11-06 23:00:10,559 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:30" (2/3) ...
[2023-11-06 23:00:10,559 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14219f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:10, skipping insertion in model container
[2023-11-06 23:00:10,559 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:10" (3/3) ...
[2023-11-06 23:00:10,561 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.4.prop5-func-interl.c
[2023-11-06 23:00:10,579 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 23:00:10,579 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 23:00:10,798 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 23:00:10,806 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=LoopsAndPotentialCycles, 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;@2090f4e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 23:00:10,807 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 23:00:10,844 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10747 states, 10745 states have (on average 1.667100977198697) internal successors, (17913), 10746 states have internal predecessors, (17913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:10,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 480
[2023-11-06 23:00:10,887 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:00:10,888 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:00:10,889 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:00:10,896 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:00:10,896 INFO  L85        PathProgramCache]: Analyzing trace with hash 1941135696, now seen corresponding path program 1 times
[2023-11-06 23:00:10,906 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:00:10,907 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519236232]
[2023-11-06 23:00:10,908 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:00:10,908 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:00:11,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:00:14,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:00:14,115 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:00:14,115 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519236232]
[2023-11-06 23:00:14,116 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519236232] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:00:14,116 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:00:14,116 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:00:14,118 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335534776]
[2023-11-06 23:00:14,119 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:00:14,126 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:00:14,127 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:00:14,173 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:00:14,174 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:00:14,202 INFO  L87              Difference]: Start difference. First operand  has 10747 states, 10745 states have (on average 1.667100977198697) internal successors, (17913), 10746 states have internal predecessors, (17913), 0 states have call successors, (0), 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 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:14,964 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:00:14,965 INFO  L93              Difference]: Finished difference Result 20971 states and 34959 transitions.
[2023-11-06 23:00:14,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:00:14,968 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 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 479
[2023-11-06 23:00:14,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:00:15,061 INFO  L225             Difference]: With dead ends: 20971
[2023-11-06 23:00:15,061 INFO  L226             Difference]: Without dead ends: 10745
[2023-11-06 23:00:15,087 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
[2023-11-06 23:00:15,093 INFO  L413           NwaCegarLoop]: 17905 mSDtfsCounter, 1 mSDsluCounter, 35804 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53709 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:00:15,094 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53709 Invalid, 11 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:00:15,141 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10745 states.
[2023-11-06 23:00:15,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10745.
[2023-11-06 23:00:15,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10745 states, 10744 states have (on average 1.6668838421444527) internal successors, (17909), 10744 states have internal predecessors, (17909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:15,485 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10745 states to 10745 states and 17909 transitions.
[2023-11-06 23:00:15,486 INFO  L78                 Accepts]: Start accepts. Automaton has 10745 states and 17909 transitions. Word has length 479
[2023-11-06 23:00:15,488 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:00:15,489 INFO  L495      AbstractCegarLoop]: Abstraction has 10745 states and 17909 transitions.
[2023-11-06 23:00:15,490 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:15,490 INFO  L276                IsEmpty]: Start isEmpty. Operand 10745 states and 17909 transitions.
[2023-11-06 23:00:15,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 481
[2023-11-06 23:00:15,502 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:00:15,503 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:00:15,503 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 23:00:15,504 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:00:15,504 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:00:15,505 INFO  L85        PathProgramCache]: Analyzing trace with hash 47392224, now seen corresponding path program 1 times
[2023-11-06 23:00:15,505 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:00:15,506 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143924496]
[2023-11-06 23:00:15,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:00:15,506 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:00:15,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:00:17,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:00:17,066 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:00:17,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143924496]
[2023-11-06 23:00:17,067 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143924496] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:00:17,067 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:00:17,068 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:00:17,068 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723064563]
[2023-11-06 23:00:17,068 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:00:17,071 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:00:17,072 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:00:17,073 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:00:17,073 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:00:17,073 INFO  L87              Difference]: Start difference. First operand 10745 states and 17909 transitions. Second operand  has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:17,649 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:00:17,650 INFO  L93              Difference]: Finished difference Result 20972 states and 34955 transitions.
[2023-11-06 23:00:17,651 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:00:17,651 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 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 480
[2023-11-06 23:00:17,652 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:00:17,708 INFO  L225             Difference]: With dead ends: 20972
[2023-11-06 23:00:17,708 INFO  L226             Difference]: Without dead ends: 10748
[2023-11-06 23:00:17,725 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
[2023-11-06 23:00:17,728 INFO  L413           NwaCegarLoop]: 17905 mSDtfsCounter, 1 mSDsluCounter, 35801 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53706 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:00:17,728 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53706 Invalid, 14 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:00:17,750 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10748 states.
[2023-11-06 23:00:17,940 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10748 to 10747.
[2023-11-06 23:00:17,959 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10747 states, 10746 states have (on average 1.6667597245486692) internal successors, (17911), 10746 states have internal predecessors, (17911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:18,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10747 states to 10747 states and 17911 transitions.
[2023-11-06 23:00:18,007 INFO  L78                 Accepts]: Start accepts. Automaton has 10747 states and 17911 transitions. Word has length 480
[2023-11-06 23:00:18,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:00:18,009 INFO  L495      AbstractCegarLoop]: Abstraction has 10747 states and 17911 transitions.
[2023-11-06 23:00:18,009 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:18,009 INFO  L276                IsEmpty]: Start isEmpty. Operand 10747 states and 17911 transitions.
[2023-11-06 23:00:18,019 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 482
[2023-11-06 23:00:18,019 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:00:18,020 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:00:18,020 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 23:00:18,020 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:00:18,021 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:00:18,021 INFO  L85        PathProgramCache]: Analyzing trace with hash 1258729322, now seen corresponding path program 1 times
[2023-11-06 23:00:18,022 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:00:18,022 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003915842]
[2023-11-06 23:00:18,022 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:00:18,023 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:00:18,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:00:19,458 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:00:19,458 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:00:19,460 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003915842]
[2023-11-06 23:00:19,460 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003915842] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:00:19,461 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:00:19,461 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-06 23:00:19,461 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853936446]
[2023-11-06 23:00:19,461 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:00:19,462 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 23:00:19,462 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:00:19,464 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 23:00:19,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-06 23:00:19,465 INFO  L87              Difference]: Start difference. First operand 10747 states and 17911 transitions. Second operand  has 6 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:35,928 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:00:35,929 INFO  L93              Difference]: Finished difference Result 49241 states and 81337 transitions.
[2023-11-06 23:00:35,930 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-06 23:00:35,930 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 0 states have call successors, (0), 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 481
[2023-11-06 23:00:35,931 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:00:35,996 INFO  L225             Difference]: With dead ends: 49241
[2023-11-06 23:00:35,996 INFO  L226             Difference]: Without dead ends: 20973
[2023-11-06 23:00:36,027 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2023-11-06 23:00:36,028 INFO  L413           NwaCegarLoop]: 16892 mSDtfsCounter, 119242 mSDsluCounter, 46777 mSDsCounter, 0 mSdLazyCounter, 8217 mSolverCounterSat, 2214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119242 SdHoareTripleChecker+Valid, 63669 SdHoareTripleChecker+Invalid, 10431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 2214 IncrementalHoareTripleChecker+Valid, 8217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time
[2023-11-06 23:00:36,029 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [119242 Valid, 63669 Invalid, 10431 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [2214 Valid, 8217 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time]
[2023-11-06 23:00:36,058 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20973 states.
[2023-11-06 23:00:36,469 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20973 to 10932.
[2023-11-06 23:00:36,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10932 states, 10931 states have (on average 1.666636172353856) internal successors, (18218), 10931 states have internal predecessors, (18218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:36,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10932 states to 10932 states and 18218 transitions.
[2023-11-06 23:00:36,531 INFO  L78                 Accepts]: Start accepts. Automaton has 10932 states and 18218 transitions. Word has length 481
[2023-11-06 23:00:36,532 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:00:36,532 INFO  L495      AbstractCegarLoop]: Abstraction has 10932 states and 18218 transitions.
[2023-11-06 23:00:36,533 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:36,536 INFO  L276                IsEmpty]: Start isEmpty. Operand 10932 states and 18218 transitions.
[2023-11-06 23:00:36,547 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 483
[2023-11-06 23:00:36,547 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:00:36,548 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:00:36,549 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 23:00:36,549 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:00:36,550 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:00:36,551 INFO  L85        PathProgramCache]: Analyzing trace with hash 1965812934, now seen corresponding path program 1 times
[2023-11-06 23:00:36,551 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:00:36,556 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586222631]
[2023-11-06 23:00:36,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:00:36,557 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:00:36,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:00:37,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:00:37,950 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:00:37,950 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586222631]
[2023-11-06 23:00:37,950 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586222631] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:00:37,950 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:00:37,951 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 23:00:37,951 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114549192]
[2023-11-06 23:00:37,952 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:00:37,952 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 23:00:37,953 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:00:37,954 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 23:00:37,954 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 23:00:37,954 INFO  L87              Difference]: Start difference. First operand 10932 states and 18218 transitions. Second operand  has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:53,292 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:00:53,292 INFO  L93              Difference]: Finished difference Result 31199 states and 51998 transitions.
[2023-11-06 23:00:53,292 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 23:00:53,293 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 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 482
[2023-11-06 23:00:53,294 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:00:53,326 INFO  L225             Difference]: With dead ends: 31199
[2023-11-06 23:00:53,326 INFO  L226             Difference]: Without dead ends: 20973
[2023-11-06 23:00:53,336 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-11-06 23:00:53,337 INFO  L413           NwaCegarLoop]: 13128 mSDtfsCounter, 51514 mSDsluCounter, 26249 mSDsCounter, 0 mSdLazyCounter, 14344 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51514 SdHoareTripleChecker+Valid, 39377 SdHoareTripleChecker+Invalid, 14344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time
[2023-11-06 23:00:53,338 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [51514 Valid, 39377 Invalid, 14344 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 14344 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time]
[2023-11-06 23:00:53,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20973 states.
[2023-11-06 23:00:53,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20973 to 10933.
[2023-11-06 23:00:53,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10933 states, 10932 states have (on average 1.6665751920965972) internal successors, (18219), 10932 states have internal predecessors, (18219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:53,602 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10933 states to 10933 states and 18219 transitions.
[2023-11-06 23:00:53,602 INFO  L78                 Accepts]: Start accepts. Automaton has 10933 states and 18219 transitions. Word has length 482
[2023-11-06 23:00:53,603 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:00:53,603 INFO  L495      AbstractCegarLoop]: Abstraction has 10933 states and 18219 transitions.
[2023-11-06 23:00:53,604 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:53,604 INFO  L276                IsEmpty]: Start isEmpty. Operand 10933 states and 18219 transitions.
[2023-11-06 23:00:53,616 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 483
[2023-11-06 23:00:53,616 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:00:53,616 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:00:53,617 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-06 23:00:53,617 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:00:53,617 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:00:53,618 INFO  L85        PathProgramCache]: Analyzing trace with hash 1572785924, now seen corresponding path program 1 times
[2023-11-06 23:00:53,618 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:00:53,618 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071496072]
[2023-11-06 23:00:53,619 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:00:53,619 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:00:53,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:00:56,129 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:00:56,129 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:00:56,129 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071496072]
[2023-11-06 23:00:56,130 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071496072] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:00:56,130 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:00:56,130 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-06 23:00:56,132 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870088346]
[2023-11-06 23:00:56,132 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:00:56,133 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 23:00:56,133 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:00:56,134 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 23:00:56,135 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-06 23:00:56,136 INFO  L87              Difference]: Start difference. First operand 10933 states and 18219 transitions. Second operand  has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:57,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:00:57,206 INFO  L93              Difference]: Finished difference Result 31388 states and 52311 transitions.
[2023-11-06 23:00:57,207 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-06 23:00:57,208 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 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 482
[2023-11-06 23:00:57,209 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:00:57,250 INFO  L225             Difference]: With dead ends: 31388
[2023-11-06 23:00:57,251 INFO  L226             Difference]: Without dead ends: 21162
[2023-11-06 23:00:57,263 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-11-06 23:00:57,265 INFO  L413           NwaCegarLoop]: 18210 mSDtfsCounter, 68235 mSDsluCounter, 54008 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68235 SdHoareTripleChecker+Valid, 72218 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:00:57,265 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [68235 Valid, 72218 Invalid, 32 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:00:57,287 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21162 states.
[2023-11-06 23:00:57,465 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21162 to 10941.
[2023-11-06 23:00:57,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10941 states, 10940 states have (on average 1.6662705667276052) internal successors, (18229), 10940 states have internal predecessors, (18229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:57,501 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10941 states to 10941 states and 18229 transitions.
[2023-11-06 23:00:57,501 INFO  L78                 Accepts]: Start accepts. Automaton has 10941 states and 18229 transitions. Word has length 482
[2023-11-06 23:00:57,502 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:00:57,502 INFO  L495      AbstractCegarLoop]: Abstraction has 10941 states and 18229 transitions.
[2023-11-06 23:00:57,503 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:00:57,503 INFO  L276                IsEmpty]: Start isEmpty. Operand 10941 states and 18229 transitions.
[2023-11-06 23:00:57,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 484
[2023-11-06 23:00:57,514 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:00:57,515 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:00:57,515 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-06 23:00:57,515 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:00:57,516 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:00:57,516 INFO  L85        PathProgramCache]: Analyzing trace with hash 1342638788, now seen corresponding path program 1 times
[2023-11-06 23:00:57,516 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:00:57,516 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125997561]
[2023-11-06 23:00:57,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:00:57,517 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:00:57,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:01:00,967 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:01:00,967 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:01:00,968 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125997561]
[2023-11-06 23:01:00,968 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125997561] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:01:00,968 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:01:00,968 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-06 23:01:00,968 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844932524]
[2023-11-06 23:01:00,969 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:01:00,969 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-06 23:01:00,970 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:01:00,971 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-06 23:01:00,971 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-06 23:01:00,971 INFO  L87              Difference]: Start difference. First operand 10941 states and 18229 transitions. Second operand  has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:01:03,813 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:01:03,813 INFO  L93              Difference]: Finished difference Result 31387 states and 52304 transitions.
[2023-11-06 23:01:03,814 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-06 23:01:03,814 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 0 states have call successors, (0), 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 483
[2023-11-06 23:01:03,815 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:01:03,864 INFO  L225             Difference]: With dead ends: 31387
[2023-11-06 23:01:03,864 INFO  L226             Difference]: Without dead ends: 21146
[2023-11-06 23:01:03,878 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2023-11-06 23:01:03,880 INFO  L413           NwaCegarLoop]: 17875 mSDtfsCounter, 68785 mSDsluCounter, 70903 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68785 SdHoareTripleChecker+Valid, 88778 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2023-11-06 23:01:03,883 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [68785 Valid, 88778 Invalid, 1628 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [13 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2023-11-06 23:01:03,911 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21146 states.
[2023-11-06 23:01:04,224 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21146 to 10936.
[2023-11-06 23:01:04,239 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10936 states, 10935 states have (on average 1.665660722450846) internal successors, (18214), 10935 states have internal predecessors, (18214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:01:04,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10936 states to 10936 states and 18214 transitions.
[2023-11-06 23:01:04,268 INFO  L78                 Accepts]: Start accepts. Automaton has 10936 states and 18214 transitions. Word has length 483
[2023-11-06 23:01:04,269 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:01:04,270 INFO  L495      AbstractCegarLoop]: Abstraction has 10936 states and 18214 transitions.
[2023-11-06 23:01:04,270 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:01:04,270 INFO  L276                IsEmpty]: Start isEmpty. Operand 10936 states and 18214 transitions.
[2023-11-06 23:01:04,535 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7279
[2023-11-06 23:01:04,535 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:01:04,540 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 23:01:04,541 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-06 23:01:04,541 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:01:04,542 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:01:04,546 INFO  L85        PathProgramCache]: Analyzing trace with hash -1072735615, now seen corresponding path program 1 times
[2023-11-06 23:01:04,546 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:01:04,546 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730461972]
[2023-11-06 23:01:04,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:01:04,549 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:01:06,117 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:01:06,117 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386523971]
[2023-11-06 23:01:06,120 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:01:06,121 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:01:06,121 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:01:06,125 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:01:06,172 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 23:01:18,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:01:18,915 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36279 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:01:19,223 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:01:19,705 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:01:19,706 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:01:19,706 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:01:19,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730461972]
[2023-11-06 23:01:19,707 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:01:19,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386523971]
[2023-11-06 23:01:19,707 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [386523971] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:01:19,709 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:01:19,712 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:01:19,712 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810824307]
[2023-11-06 23:01:19,712 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:01:19,726 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:01:19,726 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:01:19,739 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:01:19,739 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:01:19,742 INFO  L87              Difference]: Start difference. First operand 10936 states and 18214 transitions. Second operand  has 4 states, 4 states have (on average 1819.5) internal successors, (7278), 4 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:01:20,181 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:01:20,182 INFO  L93              Difference]: Finished difference Result 21177 states and 35275 transitions.
[2023-11-06 23:01:20,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:01:20,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1819.5) internal successors, (7278), 4 states have internal predecessors, (7278), 0 states have call successors, (0), 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 7278
[2023-11-06 23:01:20,186 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:01:20,212 INFO  L225             Difference]: With dead ends: 21177
[2023-11-06 23:01:20,212 INFO  L226             Difference]: Without dead ends: 10946
[2023-11-06 23:01:20,223 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7277 GetRequests, 7275 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:01:20,224 INFO  L413           NwaCegarLoop]: 17899 mSDtfsCounter, 12 mSDsluCounter, 35786 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 53685 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:01:20,224 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 53685 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:01:20,245 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10946 states.
[2023-11-06 23:01:20,430 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10946 to 10938.
[2023-11-06 23:01:20,444 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10938 states, 10937 states have (on average 1.6655389960683917) internal successors, (18216), 10937 states have internal predecessors, (18216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:01:20,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10938 states to 10938 states and 18216 transitions.
[2023-11-06 23:01:20,481 INFO  L78                 Accepts]: Start accepts. Automaton has 10938 states and 18216 transitions. Word has length 7278
[2023-11-06 23:01:20,487 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:01:20,487 INFO  L495      AbstractCegarLoop]: Abstraction has 10938 states and 18216 transitions.
[2023-11-06 23:01:20,490 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1819.5) internal successors, (7278), 4 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:01:20,490 INFO  L276                IsEmpty]: Start isEmpty. Operand 10938 states and 18216 transitions.
[2023-11-06 23:01:21,063 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7279
[2023-11-06 23:01:21,063 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:01:21,067 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 23:01:21,175 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 23:01:21,275 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-06 23:01:21,275 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:01:21,278 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:01:21,282 INFO  L85        PathProgramCache]: Analyzing trace with hash -1319684657, now seen corresponding path program 1 times
[2023-11-06 23:01:21,282 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:01:21,282 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749401948]
[2023-11-06 23:01:21,284 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:01:21,284 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:01:22,442 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:01:22,442 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123430761]
[2023-11-06 23:01:22,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:01:22,444 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:01:22,445 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:01:22,449 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:01:22,458 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 23:01:35,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:01:35,348 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36280 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 23:01:35,549 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:01:35,805 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:01:35,806 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:01:35,806 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:01:35,806 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749401948]
[2023-11-06 23:01:35,806 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:01:35,806 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123430761]
[2023-11-06 23:01:35,806 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [123430761] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:01:35,807 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:01:35,808 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:01:35,809 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972238794]
[2023-11-06 23:01:35,809 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:01:35,817 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:01:35,817 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:01:35,827 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:01:35,827 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:01:35,829 INFO  L87              Difference]: Start difference. First operand 10938 states and 18216 transitions. Second operand  has 4 states, 4 states have (on average 1819.5) internal successors, (7278), 4 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:01:36,309 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:01:36,310 INFO  L93              Difference]: Finished difference Result 21180 states and 35277 transitions.
[2023-11-06 23:01:36,310 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:01:36,312 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1819.5) internal successors, (7278), 4 states have internal predecessors, (7278), 0 states have call successors, (0), 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 7278
[2023-11-06 23:01:36,314 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:01:36,332 INFO  L225             Difference]: With dead ends: 21180
[2023-11-06 23:01:36,333 INFO  L226             Difference]: Without dead ends: 10947
[2023-11-06 23:01:36,340 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7277 GetRequests, 7275 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:01:36,342 INFO  L413           NwaCegarLoop]: 17899 mSDtfsCounter, 12 mSDsluCounter, 35786 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 53685 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:01:36,342 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 53685 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:01:36,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10947 states.
[2023-11-06 23:01:36,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10947 to 10939.
[2023-11-06 23:01:36,502 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10939 states, 10938 states have (on average 1.6654781495703053) internal successors, (18217), 10938 states have internal predecessors, (18217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:01:36,526 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10939 states to 10939 states and 18217 transitions.
[2023-11-06 23:01:36,526 INFO  L78                 Accepts]: Start accepts. Automaton has 10939 states and 18217 transitions. Word has length 7278
[2023-11-06 23:01:36,530 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:01:36,530 INFO  L495      AbstractCegarLoop]: Abstraction has 10939 states and 18217 transitions.
[2023-11-06 23:01:36,531 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1819.5) internal successors, (7278), 4 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:01:36,532 INFO  L276                IsEmpty]: Start isEmpty. Operand 10939 states and 18217 transitions.
[2023-11-06 23:01:36,916 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7279
[2023-11-06 23:01:36,917 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:01:36,921 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 23:01:37,034 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-06 23:01:37,121 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2023-11-06 23:01:37,122 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:01:37,122 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:01:37,125 INFO  L85        PathProgramCache]: Analyzing trace with hash -1902689251, now seen corresponding path program 1 times
[2023-11-06 23:01:37,125 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:01:37,126 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565410577]
[2023-11-06 23:01:37,127 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:01:37,127 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:01:38,401 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:01:38,401 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596176786]
[2023-11-06 23:01:38,403 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:01:38,404 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:01:38,404 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:01:38,405 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:01:38,433 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-06 23:01:51,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:01:52,171 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36281 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-06 23:01:52,346 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:01:56,486 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:01:56,487 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:01:56,487 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:01:56,487 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565410577]
[2023-11-06 23:01:56,488 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:01:56,488 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596176786]
[2023-11-06 23:01:56,488 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [596176786] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:01:56,488 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:01:56,490 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:01:56,491 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712665422]
[2023-11-06 23:01:56,491 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:01:56,501 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:01:56,501 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:01:56,513 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:01:56,513 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:01:56,517 INFO  L87              Difference]: Start difference. First operand 10939 states and 18217 transitions. Second operand  has 4 states, 4 states have (on average 1819.5) internal successors, (7278), 4 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:02:05,279 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:02:05,279 INFO  L93              Difference]: Finished difference Result 21753 states and 36229 transitions.
[2023-11-06 23:02:05,285 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:02:05,287 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1819.5) internal successors, (7278), 4 states have internal predecessors, (7278), 0 states have call successors, (0), 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 7278
[2023-11-06 23:02:05,289 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:02:05,322 INFO  L225             Difference]: With dead ends: 21753
[2023-11-06 23:02:05,322 INFO  L226             Difference]: Without dead ends: 11519
[2023-11-06 23:02:05,337 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7278 GetRequests, 7275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 23:02:05,341 INFO  L413           NwaCegarLoop]: 13900 mSDtfsCounter, 34075 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 5958 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34075 SdHoareTripleChecker+Valid, 15341 SdHoareTripleChecker+Invalid, 5958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time
[2023-11-06 23:02:05,342 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34075 Valid, 15341 Invalid, 5958 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5958 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time]
[2023-11-06 23:02:05,364 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11519 states.
[2023-11-06 23:02:05,524 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11519 to 10939.
[2023-11-06 23:02:05,539 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10939 states, 10938 states have (on average 1.6653867251782775) internal successors, (18216), 10938 states have internal predecessors, (18216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:02:05,568 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10939 states to 10939 states and 18216 transitions.
[2023-11-06 23:02:05,569 INFO  L78                 Accepts]: Start accepts. Automaton has 10939 states and 18216 transitions. Word has length 7278
[2023-11-06 23:02:05,572 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:02:05,572 INFO  L495      AbstractCegarLoop]: Abstraction has 10939 states and 18216 transitions.
[2023-11-06 23:02:05,574 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1819.5) internal successors, (7278), 4 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:02:05,574 INFO  L276                IsEmpty]: Start isEmpty. Operand 10939 states and 18216 transitions.
[2023-11-06 23:02:06,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7280
[2023-11-06 23:02:06,078 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:02:06,084 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 23:02:06,198 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-06 23:02:06,284 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:02:06,285 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:02:06,286 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:02:06,290 INFO  L85        PathProgramCache]: Analyzing trace with hash -1885665491, now seen corresponding path program 1 times
[2023-11-06 23:02:06,290 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:02:06,291 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787688691]
[2023-11-06 23:02:06,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:02:06,293 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:02:07,476 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:02:07,476 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110170209]
[2023-11-06 23:02:07,479 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:02:07,480 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:02:07,480 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:02:07,481 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:02:07,520 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e92547-596b-4eef-aca5-e050af6907a2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-06 23:02:21,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:02:21,609 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36282 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-06 23:02:21,785 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:02:25,893 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:02:25,894 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:02:25,894 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:02:25,894 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787688691]
[2023-11-06 23:02:25,895 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:02:25,895 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110170209]
[2023-11-06 23:02:25,895 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110170209] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:02:25,895 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:02:25,897 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:02:25,898 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223445364]
[2023-11-06 23:02:25,898 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:02:25,908 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:02:25,909 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:02:25,920 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:02:25,921 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:02:25,924 INFO  L87              Difference]: Start difference. First operand 10939 states and 18216 transitions. Second operand  has 4 states, 4 states have (on average 1819.75) internal successors, (7279), 4 states have internal predecessors, (7279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)