./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-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_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/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_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/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_631cc617-7ae7-452d-848e-c452dbaf9962/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 35ce0f26eb7d39b301b56213df03e324c38efa88e7ac4e3225823723246a9561
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 22:39:38,521 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 22:39:38,649 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 22:39:38,665 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 22:39:38,666 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 22:39:38,705 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 22:39:38,706 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 22:39:38,706 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 22:39:38,708 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 22:39:38,713 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 22:39:38,715 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 22:39:38,715 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 22:39:38,716 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 22:39:38,718 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 22:39:38,718 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 22:39:38,719 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 22:39:38,719 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 22:39:38,720 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 22:39:38,720 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 22:39:38,721 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 22:39:38,721 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 22:39:38,722 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 22:39:38,723 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 22:39:38,723 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 22:39:38,724 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 22:39:38,724 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:39:38,725 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 22:39:38,725 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 22:39:38,725 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 22:39:38,726 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 22:39:38,727 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 22:39:38,728 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 22:39:38,728 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 22:39:38,728 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 22:39:38,728 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 22:39:38,729 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 22:39:38,729 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_631cc617-7ae7-452d-848e-c452dbaf9962/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_631cc617-7ae7-452d-848e-c452dbaf9962/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 -> 35ce0f26eb7d39b301b56213df03e324c38efa88e7ac4e3225823723246a9561
[2023-11-06 22:39:39,003 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 22:39:39,038 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 22:39:39,041 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 22:39:39,043 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 22:39:39,044 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 22:39:39,045 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-func-interl.c
[2023-11-06 22:39:42,319 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 22:39:42,816 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 22:39:42,817 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-func-interl.c
[2023-11-06 22:39:42,854 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/data/144858a19/cdbb4c8ac33744678dfb879473f82f47/FLAG7c1023a16
[2023-11-06 22:39:42,871 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/data/144858a19/cdbb4c8ac33744678dfb879473f82f47
[2023-11-06 22:39:42,877 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 22:39:42,878 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 22:39:42,881 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 22:39:42,882 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 22:39:42,888 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 22:39:42,888 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:39:42" (1/1) ...
[2023-11-06 22:39:42,890 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb5e86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:42, skipping insertion in model container
[2023-11-06 22:39:42,890 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:39:42" (1/1) ...
[2023-11-06 22:39:43,043 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 22:39:43,346 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_631cc617-7ae7-452d-848e-c452dbaf9962/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-func-interl.c[1174,1187]
[2023-11-06 22:39:44,333 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:39:44,344 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 22:39:44,354 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_631cc617-7ae7-452d-848e-c452dbaf9962/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-func-interl.c[1174,1187]
[2023-11-06 22:39:44,884 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:39:44,900 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 22:39:44,900 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44 WrapperNode
[2023-11-06 22:39:44,901 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 22:39:44,902 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 22:39:44,902 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 22:39:44,902 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 22:39:44,910 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:45,058 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:47,419 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24229
[2023-11-06 22:39:47,420 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 22:39:47,421 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 22:39:47,421 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 22:39:47,421 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 22:39:47,434 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:47,434 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:48,148 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:48,148 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:48,973 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:49,112 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:49,284 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:49,362 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:49,693 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 22:39:49,694 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 22:39:49,694 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 22:39:49,694 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 22:39:49,695 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (1/1) ...
[2023-11-06 22:39:49,702 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:39:49,713 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:39:49,727 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 22:39:49,744 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 22:39:49,772 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 22:39:49,773 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 22:39:49,774 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 22:39:49,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 22:39:51,001 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 22:39:51,003 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 22:40:06,929 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 22:40:06,981 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 22:40:06,981 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 22:40:06,989 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:06 BoogieIcfgContainer
[2023-11-06 22:40:06,989 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 22:40:06,992 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 22:40:06,992 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 22:40:06,996 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 22:40:06,996 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:39:42" (1/3) ...
[2023-11-06 22:40:06,997 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b144200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:06, skipping insertion in model container
[2023-11-06 22:40:06,997 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:44" (2/3) ...
[2023-11-06 22:40:06,998 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b144200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:06, skipping insertion in model container
[2023-11-06 22:40:06,998 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:06" (3/3) ...
[2023-11-06 22:40:06,999 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.3.prop3-func-interl.c
[2023-11-06 22:40:07,020 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 22:40:07,021 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 22:40:07,180 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 22:40:07,188 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;@4f678cfd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 22:40:07,188 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 22:40:07,211 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5788 states, 5786 states have (on average 1.670584168683028) internal successors, (9666), 5787 states have internal predecessors, (9666), 0 states have call successors, (0), 0 states 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 22:40:07,236 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 314
[2023-11-06 22:40:07,236 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:07,237 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]
[2023-11-06 22:40:07,238 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:07,244 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:07,244 INFO  L85        PathProgramCache]: Analyzing trace with hash -892540495, now seen corresponding path program 1 times
[2023-11-06 22:40:07,255 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:07,255 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44754258]
[2023-11-06 22:40:07,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:07,257 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:07,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:09,902 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 22:40:09,904 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:09,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44754258]
[2023-11-06 22:40:09,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44754258] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:09,905 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:09,905 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:40:09,909 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400101548]
[2023-11-06 22:40:09,910 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:09,917 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:40:09,918 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:09,963 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:40:09,964 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:40:09,981 INFO  L87              Difference]: Start difference. First operand  has 5788 states, 5786 states have (on average 1.670584168683028) internal successors, (9666), 5787 states have internal predecessors, (9666), 0 states have call successors, (0), 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 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 22:40:18,203 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:18,203 INFO  L93              Difference]: Finished difference Result 16998 states and 28398 transitions.
[2023-11-06 22:40:18,206 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 22:40:18,208 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 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 313
[2023-11-06 22:40:18,211 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:18,298 INFO  L225             Difference]: With dead ends: 16998
[2023-11-06 22:40:18,298 INFO  L226             Difference]: Without dead ends: 11389
[2023-11-06 22:40:18,317 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 22:40:18,322 INFO  L413           NwaCegarLoop]: 7725 mSDtfsCounter, 28080 mSDsluCounter, 15443 mSDsCounter, 0 mSdLazyCounter, 5812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28080 SdHoareTripleChecker+Valid, 23168 SdHoareTripleChecker+Invalid, 5813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2023-11-06 22:40:18,323 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28080 Valid, 23168 Invalid, 5813 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 5812 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2023-11-06 22:40:18,365 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11389 states.
[2023-11-06 22:40:18,614 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11389 to 6063.
[2023-11-06 22:40:18,631 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6063 states, 6062 states have (on average 1.6699109204882876) internal successors, (10123), 6062 states have internal predecessors, (10123), 0 states have call successors, (0), 0 states 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 22:40:18,660 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6063 states to 6063 states and 10123 transitions.
[2023-11-06 22:40:18,661 INFO  L78                 Accepts]: Start accepts. Automaton has 6063 states and 10123 transitions. Word has length 313
[2023-11-06 22:40:18,663 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:18,664 INFO  L495      AbstractCegarLoop]: Abstraction has 6063 states and 10123 transitions.
[2023-11-06 22:40:18,664 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 22:40:18,665 INFO  L276                IsEmpty]: Start isEmpty. Operand 6063 states and 10123 transitions.
[2023-11-06 22:40:18,673 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 315
[2023-11-06 22:40:18,673 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:18,674 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]
[2023-11-06 22:40:18,674 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 22:40:18,675 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:18,675 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:18,676 INFO  L85        PathProgramCache]: Analyzing trace with hash 962207557, now seen corresponding path program 1 times
[2023-11-06 22:40:18,676 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:18,676 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799873743]
[2023-11-06 22:40:18,677 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:18,677 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:18,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:20,099 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 22:40:20,100 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:20,101 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799873743]
[2023-11-06 22:40:20,101 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799873743] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:20,101 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:20,101 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:40:20,102 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783070432]
[2023-11-06 22:40:20,102 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:20,105 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:40:20,105 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:20,106 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:40:20,107 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:40:20,107 INFO  L87              Difference]: Start difference. First operand 6063 states and 10123 transitions. Second operand  has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 22:40:20,302 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:20,302 INFO  L93              Difference]: Finished difference Result 6067 states and 10127 transitions.
[2023-11-06 22:40:20,303 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:40:20,304 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 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 314
[2023-11-06 22:40:20,305 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:20,340 INFO  L225             Difference]: With dead ends: 6067
[2023-11-06 22:40:20,341 INFO  L226             Difference]: Without dead ends: 6065
[2023-11-06 22:40:20,348 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 22:40:20,351 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 1 mSDsluCounter, 19310 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28968 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:40:20,352 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28968 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:40:20,366 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6065 states.
[2023-11-06 22:40:20,485 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6065 to 6065.
[2023-11-06 22:40:20,508 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6065 states, 6064 states have (on average 1.6696899736147757) internal successors, (10125), 6064 states have internal predecessors, (10125), 0 states have call successors, (0), 0 states 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 22:40:20,539 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6065 states to 6065 states and 10125 transitions.
[2023-11-06 22:40:20,539 INFO  L78                 Accepts]: Start accepts. Automaton has 6065 states and 10125 transitions. Word has length 314
[2023-11-06 22:40:20,541 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:20,541 INFO  L495      AbstractCegarLoop]: Abstraction has 6065 states and 10125 transitions.
[2023-11-06 22:40:20,542 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 22:40:20,543 INFO  L276                IsEmpty]: Start isEmpty. Operand 6065 states and 10125 transitions.
[2023-11-06 22:40:20,548 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 316
[2023-11-06 22:40:20,548 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:20,548 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]
[2023-11-06 22:40:20,549 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 22:40:20,549 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:20,550 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:20,550 INFO  L85        PathProgramCache]: Analyzing trace with hash -234550427, now seen corresponding path program 1 times
[2023-11-06 22:40:20,551 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:20,551 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555920963]
[2023-11-06 22:40:20,551 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:20,552 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:20,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:21,260 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 22:40:21,261 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:21,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555920963]
[2023-11-06 22:40:21,262 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555920963] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:21,263 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:21,263 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:40:21,263 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457414604]
[2023-11-06 22:40:21,263 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:21,264 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:40:21,264 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:21,266 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:40:21,266 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:40:21,266 INFO  L87              Difference]: Start difference. First operand 6065 states and 10125 transitions. Second operand  has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 22:40:21,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:21,481 INFO  L93              Difference]: Finished difference Result 11675 states and 19494 transitions.
[2023-11-06 22:40:21,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:40:21,482 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 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 315
[2023-11-06 22:40:21,482 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:21,536 INFO  L225             Difference]: With dead ends: 11675
[2023-11-06 22:40:21,537 INFO  L226             Difference]: Without dead ends: 6068
[2023-11-06 22:40:21,547 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 22:40:21,552 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 1 mSDsluCounter, 19307 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28965 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:40:21,554 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28965 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:40:21,566 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6068 states.
[2023-11-06 22:40:21,678 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6068 to 6067.
[2023-11-06 22:40:21,689 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6067 states, 6066 states have (on average 1.6694691724365316) internal successors, (10127), 6066 states have internal predecessors, (10127), 0 states have call successors, (0), 0 states 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 22:40:21,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6067 states to 6067 states and 10127 transitions.
[2023-11-06 22:40:21,712 INFO  L78                 Accepts]: Start accepts. Automaton has 6067 states and 10127 transitions. Word has length 315
[2023-11-06 22:40:21,712 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:21,713 INFO  L495      AbstractCegarLoop]: Abstraction has 6067 states and 10127 transitions.
[2023-11-06 22:40:21,714 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 22:40:21,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 6067 states and 10127 transitions.
[2023-11-06 22:40:21,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 317
[2023-11-06 22:40:21,723 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:21,724 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]
[2023-11-06 22:40:21,724 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 22:40:21,725 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:21,726 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:21,727 INFO  L85        PathProgramCache]: Analyzing trace with hash 1106653277, now seen corresponding path program 1 times
[2023-11-06 22:40:21,728 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:21,734 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955430331]
[2023-11-06 22:40:21,734 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:21,735 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:22,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:23,365 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 22:40:23,365 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:23,366 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955430331]
[2023-11-06 22:40:23,366 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955430331] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:23,366 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:23,366 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:40:23,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856492395]
[2023-11-06 22:40:23,367 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:23,367 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:40:23,368 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:23,368 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:40:23,369 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:40:23,369 INFO  L87              Difference]: Start difference. First operand 6067 states and 10127 transitions. Second operand  has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 22:40:23,870 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:23,870 INFO  L93              Difference]: Finished difference Result 17275 states and 28846 transitions.
[2023-11-06 22:40:23,870 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:40:23,871 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 0 states have call successors, (0), 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 316
[2023-11-06 22:40:23,872 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:23,893 INFO  L225             Difference]: With dead ends: 17275
[2023-11-06 22:40:23,894 INFO  L226             Difference]: Without dead ends: 11666
[2023-11-06 22:40:23,904 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-06 22:40:23,911 INFO  L413           NwaCegarLoop]: 10109 mSDtfsCounter, 37872 mSDsluCounter, 19293 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37872 SdHoareTripleChecker+Valid, 29402 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:40:23,912 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37872 Valid, 29402 Invalid, 39 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:40:23,932 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11666 states.
[2023-11-06 22:40:24,085 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 6069.
[2023-11-06 22:40:24,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6069 states, 6068 states have (on average 1.6692485168094924) internal successors, (10129), 6068 states have internal predecessors, (10129), 0 states have call successors, (0), 0 states 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 22:40:24,113 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10129 transitions.
[2023-11-06 22:40:24,113 INFO  L78                 Accepts]: Start accepts. Automaton has 6069 states and 10129 transitions. Word has length 316
[2023-11-06 22:40:24,114 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:24,114 INFO  L495      AbstractCegarLoop]: Abstraction has 6069 states and 10129 transitions.
[2023-11-06 22:40:24,114 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 22:40:24,114 INFO  L276                IsEmpty]: Start isEmpty. Operand 6069 states and 10129 transitions.
[2023-11-06 22:40:24,584 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 22:40:24,585 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:24,588 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 22:40:24,588 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-06 22:40:24,589 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:24,589 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:24,591 INFO  L85        PathProgramCache]: Analyzing trace with hash 596594063, now seen corresponding path program 1 times
[2023-11-06 22:40:24,591 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:24,591 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745101284]
[2023-11-06 22:40:24,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:24,592 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:25,094 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:40:25,095 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870242641]
[2023-11-06 22:40:25,096 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:25,097 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:25,097 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:40:25,102 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:40:25,107 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 22:40:30,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:30,656 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16278 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:40:30,801 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:40:31,071 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:40:31,071 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:40:31,072 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:31,072 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745101284]
[2023-11-06 22:40:31,072 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:40:31,072 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870242641]
[2023-11-06 22:40:31,073 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870242641] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:31,073 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:31,074 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:40:31,075 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978496660]
[2023-11-06 22:40:31,075 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:31,082 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:40:31,082 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:31,088 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:40:31,089 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:40:31,091 INFO  L87              Difference]: Start difference. First operand 6069 states and 10129 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:31,367 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:31,367 INFO  L93              Difference]: Finished difference Result 11688 states and 19512 transitions.
[2023-11-06 22:40:31,368 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:40:31,370 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 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 3929
[2023-11-06 22:40:31,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:31,384 INFO  L225             Difference]: With dead ends: 11688
[2023-11-06 22:40:31,385 INFO  L226             Difference]: Without dead ends: 6079
[2023-11-06 22:40:31,394 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 22:40:31,395 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 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 22:40:31,395 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:40:31,410 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6079 states.
[2023-11-06 22:40:31,544 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6079 to 6071.
[2023-11-06 22:40:31,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6071 states, 6070 states have (on average 1.6690280065897858) internal successors, (10131), 6070 states have internal predecessors, (10131), 0 states have call successors, (0), 0 states 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 22:40:31,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6071 states to 6071 states and 10131 transitions.
[2023-11-06 22:40:31,578 INFO  L78                 Accepts]: Start accepts. Automaton has 6071 states and 10131 transitions. Word has length 3929
[2023-11-06 22:40:31,581 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:31,581 INFO  L495      AbstractCegarLoop]: Abstraction has 6071 states and 10131 transitions.
[2023-11-06 22:40:31,584 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:31,584 INFO  L276                IsEmpty]: Start isEmpty. Operand 6071 states and 10131 transitions.
[2023-11-06 22:40:31,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 22:40:31,816 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:31,820 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:31,886 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 22:40:32,034 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:32,035 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:32,035 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:32,037 INFO  L85        PathProgramCache]: Analyzing trace with hash 2110614913, now seen corresponding path program 1 times
[2023-11-06 22:40:32,038 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:32,038 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201381981]
[2023-11-06 22:40:32,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:32,039 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:32,655 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:40:32,655 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832637830]
[2023-11-06 22:40:32,656 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:32,657 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:32,657 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:40:32,659 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:40:32,682 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 22:40:37,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:37,985 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16279 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:40:38,112 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:40:38,312 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:40:38,313 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:40:38,313 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:38,314 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201381981]
[2023-11-06 22:40:38,318 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:40:38,318 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832637830]
[2023-11-06 22:40:38,319 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832637830] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:38,319 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:38,320 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:40:38,320 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52362144]
[2023-11-06 22:40:38,321 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:38,328 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:40:38,329 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:38,336 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:40:38,337 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:40:38,339 INFO  L87              Difference]: Start difference. First operand 6071 states and 10131 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:38,593 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:38,593 INFO  L93              Difference]: Finished difference Result 11691 states and 19514 transitions.
[2023-11-06 22:40:38,594 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:40:38,596 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 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 3929
[2023-11-06 22:40:38,598 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:38,611 INFO  L225             Difference]: With dead ends: 11691
[2023-11-06 22:40:38,612 INFO  L226             Difference]: Without dead ends: 6080
[2023-11-06 22:40:38,620 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 22:40:38,622 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:40:38,622 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:40:38,635 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6080 states.
[2023-11-06 22:40:38,745 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6080 to 6072.
[2023-11-06 22:40:38,756 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6072 states, 6071 states have (on average 1.6689178059627738) internal successors, (10132), 6071 states have internal predecessors, (10132), 0 states have call successors, (0), 0 states 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 22:40:38,774 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 10132 transitions.
[2023-11-06 22:40:38,774 INFO  L78                 Accepts]: Start accepts. Automaton has 6072 states and 10132 transitions. Word has length 3929
[2023-11-06 22:40:38,776 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:38,776 INFO  L495      AbstractCegarLoop]: Abstraction has 6072 states and 10132 transitions.
[2023-11-06 22:40:38,778 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:38,779 INFO  L276                IsEmpty]: Start isEmpty. Operand 6072 states and 10132 transitions.
[2023-11-06 22:40:39,003 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 22:40:39,003 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:39,006 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:39,068 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-06 22:40:39,218 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:39,219 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:39,219 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:39,221 INFO  L85        PathProgramCache]: Analyzing trace with hash 1821445363, now seen corresponding path program 1 times
[2023-11-06 22:40:39,222 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:39,222 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868878499]
[2023-11-06 22:40:39,223 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:39,223 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:39,829 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:40:39,831 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39909991]
[2023-11-06 22:40:39,832 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:39,832 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:39,833 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:40:39,834 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:40:39,842 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-06 22:40:45,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:45,211 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16280 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:40:45,320 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:40:45,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:40:45,512 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:40:45,512 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:45,512 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868878499]
[2023-11-06 22:40:45,513 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:40:45,513 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39909991]
[2023-11-06 22:40:45,513 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [39909991] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:45,513 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:45,514 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:40:45,515 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614160910]
[2023-11-06 22:40:45,515 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:45,522 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:40:45,522 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:45,529 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:40:45,529 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:40:45,531 INFO  L87              Difference]: Start difference. First operand 6072 states and 10132 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:45,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:45,883 INFO  L93              Difference]: Finished difference Result 11693 states and 19516 transitions.
[2023-11-06 22:40:45,884 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:40:45,885 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 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 3929
[2023-11-06 22:40:45,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:45,896 INFO  L225             Difference]: With dead ends: 11693
[2023-11-06 22:40:45,896 INFO  L226             Difference]: Without dead ends: 6081
[2023-11-06 22:40:45,903 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 22:40:45,905 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:40:45,905 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:40:45,913 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6081 states.
[2023-11-06 22:40:45,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6073.
[2023-11-06 22:40:46,002 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6073 states, 6072 states have (on average 1.6688076416337285) internal successors, (10133), 6072 states have internal predecessors, (10133), 0 states have call successors, (0), 0 states 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 22:40:46,016 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6073 states to 6073 states and 10133 transitions.
[2023-11-06 22:40:46,017 INFO  L78                 Accepts]: Start accepts. Automaton has 6073 states and 10133 transitions. Word has length 3929
[2023-11-06 22:40:46,018 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:46,018 INFO  L495      AbstractCegarLoop]: Abstraction has 6073 states and 10133 transitions.
[2023-11-06 22:40:46,020 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:46,020 INFO  L276                IsEmpty]: Start isEmpty. Operand 6073 states and 10133 transitions.
[2023-11-06 22:40:46,137 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 22:40:46,137 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:46,140 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:46,200 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-06 22:40:46,362 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:46,363 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:46,363 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:46,365 INFO  L85        PathProgramCache]: Analyzing trace with hash 868403045, now seen corresponding path program 1 times
[2023-11-06 22:40:46,365 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:46,365 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144922199]
[2023-11-06 22:40:46,366 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:46,366 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:46,789 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:40:46,789 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391197655]
[2023-11-06 22:40:46,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:46,790 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:46,791 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:40:46,795 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:40:46,822 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-06 22:40:51,494 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:51,625 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16281 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:40:51,692 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:40:51,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:40:51,816 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:40:51,816 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:51,816 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144922199]
[2023-11-06 22:40:51,816 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:40:51,817 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391197655]
[2023-11-06 22:40:51,817 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [391197655] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:51,817 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:51,818 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:40:51,819 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312252930]
[2023-11-06 22:40:51,819 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:51,825 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:40:51,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:51,830 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:40:51,830 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:40:51,832 INFO  L87              Difference]: Start difference. First operand 6073 states and 10133 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:52,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:52,114 INFO  L93              Difference]: Finished difference Result 11695 states and 19518 transitions.
[2023-11-06 22:40:52,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:40:52,116 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 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 3929
[2023-11-06 22:40:52,118 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:52,136 INFO  L225             Difference]: With dead ends: 11695
[2023-11-06 22:40:52,136 INFO  L226             Difference]: Without dead ends: 6082
[2023-11-06 22:40:52,144 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 22:40:52,146 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:40:52,147 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:40:52,156 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6082 states.
[2023-11-06 22:40:52,235 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6082 to 6074.
[2023-11-06 22:40:52,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6074 states, 6073 states have (on average 1.6686975135847193) internal successors, (10134), 6073 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states 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 22:40:52,256 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 10134 transitions.
[2023-11-06 22:40:52,256 INFO  L78                 Accepts]: Start accepts. Automaton has 6074 states and 10134 transitions. Word has length 3929
[2023-11-06 22:40:52,258 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:52,258 INFO  L495      AbstractCegarLoop]: Abstraction has 6074 states and 10134 transitions.
[2023-11-06 22:40:52,259 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:52,260 INFO  L276                IsEmpty]: Start isEmpty. Operand 6074 states and 10134 transitions.
[2023-11-06 22:40:52,377 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 22:40:52,378 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:52,381 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:52,437 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-06 22:40:52,594 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:52,595 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:52,595 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:52,596 INFO  L85        PathProgramCache]: Analyzing trace with hash 454213939, now seen corresponding path program 1 times
[2023-11-06 22:40:52,597 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:52,597 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964899752]
[2023-11-06 22:40:52,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:52,598 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:53,010 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:40:53,011 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955860847]
[2023-11-06 22:40:53,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:53,012 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:53,013 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:40:53,014 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:40:53,038 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-06 22:40:57,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:57,806 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16282 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:40:57,881 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:40:58,226 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:40:58,227 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:40:58,227 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:58,227 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964899752]
[2023-11-06 22:40:58,227 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:40:58,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955860847]
[2023-11-06 22:40:58,228 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [955860847] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:58,228 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:58,229 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:40:58,229 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527053192]
[2023-11-06 22:40:58,229 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:58,235 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:40:58,235 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:58,240 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:40:58,240 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:40:58,242 INFO  L87              Difference]: Start difference. First operand 6074 states and 10134 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:58,433 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:58,434 INFO  L93              Difference]: Finished difference Result 11697 states and 19520 transitions.
[2023-11-06 22:40:58,434 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:40:58,436 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 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 3929
[2023-11-06 22:40:58,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:58,451 INFO  L225             Difference]: With dead ends: 11697
[2023-11-06 22:40:58,451 INFO  L226             Difference]: Without dead ends: 6083
[2023-11-06 22:40:58,460 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 22:40:58,461 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:40:58,461 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:40:58,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6083 states.
[2023-11-06 22:40:58,552 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6083 to 6075.
[2023-11-06 22:40:58,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6075 states, 6074 states have (on average 1.6685874217978267) internal successors, (10135), 6074 states have internal predecessors, (10135), 0 states have call successors, (0), 0 states 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 22:40:58,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6075 states to 6075 states and 10135 transitions.
[2023-11-06 22:40:58,575 INFO  L78                 Accepts]: Start accepts. Automaton has 6075 states and 10135 transitions. Word has length 3929
[2023-11-06 22:40:58,577 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:58,577 INFO  L495      AbstractCegarLoop]: Abstraction has 6075 states and 10135 transitions.
[2023-11-06 22:40:58,579 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:40:58,579 INFO  L276                IsEmpty]: Start isEmpty. Operand 6075 states and 10135 transitions.
[2023-11-06 22:40:58,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 22:40:58,706 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:58,709 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:58,772 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-06 22:40:58,922 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-06 22:40:58,923 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:58,923 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:58,925 INFO  L85        PathProgramCache]: Analyzing trace with hash 1101037569, now seen corresponding path program 1 times
[2023-11-06 22:40:58,925 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:58,925 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052870767]
[2023-11-06 22:40:58,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:58,926 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:59,241 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:40:59,241 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586866142]
[2023-11-06 22:40:59,243 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:59,243 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:40:59,243 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:40:59,244 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:40:59,270 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-06 22:41:04,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:04,154 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16283 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:41:04,216 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:41:04,352 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:04,352 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:41:04,353 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:04,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052870767]
[2023-11-06 22:41:04,353 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:41:04,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586866142]
[2023-11-06 22:41:04,353 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586866142] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:04,353 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:04,354 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:41:04,355 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512360856]
[2023-11-06 22:41:04,355 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:04,359 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:41:04,360 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:04,364 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:41:04,364 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:04,366 INFO  L87              Difference]: Start difference. First operand 6075 states and 10135 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:41:04,516 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:04,516 INFO  L93              Difference]: Finished difference Result 11699 states and 19522 transitions.
[2023-11-06 22:41:04,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:41:04,519 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 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 3929
[2023-11-06 22:41:04,526 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:04,538 INFO  L225             Difference]: With dead ends: 11699
[2023-11-06 22:41:04,539 INFO  L226             Difference]: Without dead ends: 6084
[2023-11-06 22:41:04,546 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 22:41:04,547 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:04,548 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:41:04,557 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6084 states.
[2023-11-06 22:41:04,637 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 6076.
[2023-11-06 22:41:04,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6076 states, 6075 states have (on average 1.668477366255144) internal successors, (10136), 6075 states have internal predecessors, (10136), 0 states have call successors, (0), 0 states 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 22:41:04,659 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 10136 transitions.
[2023-11-06 22:41:04,659 INFO  L78                 Accepts]: Start accepts. Automaton has 6076 states and 10136 transitions. Word has length 3929
[2023-11-06 22:41:04,662 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:04,663 INFO  L495      AbstractCegarLoop]: Abstraction has 6076 states and 10136 transitions.
[2023-11-06 22:41:04,664 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:41:04,664 INFO  L276                IsEmpty]: Start isEmpty. Operand 6076 states and 10136 transitions.
[2023-11-06 22:41:04,781 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 22:41:04,782 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:04,785 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 22:41:04,843 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-06 22:41:04,998 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-06 22:41:04,999 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:04,999 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:05,000 INFO  L85        PathProgramCache]: Analyzing trace with hash -356827697, now seen corresponding path program 1 times
[2023-11-06 22:41:05,001 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:05,001 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757843510]
[2023-11-06 22:41:05,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:05,002 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:05,322 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:41:05,323 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591507757]
[2023-11-06 22:41:05,324 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:05,324 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:05,324 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:41:05,339 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:41:05,374 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-06 22:41:09,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:10,061 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16284 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:41:10,115 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:41:10,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:10,242 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:41:10,243 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:10,243 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757843510]
[2023-11-06 22:41:10,243 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:41:10,243 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591507757]
[2023-11-06 22:41:10,243 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [591507757] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:10,243 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:10,245 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:41:10,245 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030673792]
[2023-11-06 22:41:10,245 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:10,250 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:41:10,250 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:10,254 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:41:10,255 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:10,257 INFO  L87              Difference]: Start difference. First operand 6076 states and 10136 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:41:10,437 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:10,437 INFO  L93              Difference]: Finished difference Result 11701 states and 19524 transitions.
[2023-11-06 22:41:10,438 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:41:10,439 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 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 3929
[2023-11-06 22:41:10,443 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:10,458 INFO  L225             Difference]: With dead ends: 11701
[2023-11-06 22:41:10,458 INFO  L226             Difference]: Without dead ends: 6085
[2023-11-06 22:41:10,465 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 22:41:10,465 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:10,466 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:41:10,474 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6085 states.
[2023-11-06 22:41:10,542 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 6077.
[2023-11-06 22:41:10,551 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6077 states, 6076 states have (on average 1.6683673469387754) internal successors, (10137), 6076 states have internal predecessors, (10137), 0 states have call successors, (0), 0 states 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 22:41:10,563 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 10137 transitions.
[2023-11-06 22:41:10,563 INFO  L78                 Accepts]: Start accepts. Automaton has 6077 states and 10137 transitions. Word has length 3929
[2023-11-06 22:41:10,566 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:10,566 INFO  L495      AbstractCegarLoop]: Abstraction has 6077 states and 10137 transitions.
[2023-11-06 22:41:10,568 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:41:10,568 INFO  L276                IsEmpty]: Start isEmpty. Operand 6077 states and 10137 transitions.
[2023-11-06 22:41:10,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 22:41:10,683 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:10,686 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:10,746 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-06 22:41:10,902 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-06 22:41:10,903 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:10,903 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:10,904 INFO  L85        PathProgramCache]: Analyzing trace with hash 974766237, now seen corresponding path program 1 times
[2023-11-06 22:41:10,905 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:10,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994359953]
[2023-11-06 22:41:10,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:10,905 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:11,223 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:41:11,223 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485702008]
[2023-11-06 22:41:11,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:11,225 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:11,225 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:41:11,226 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:41:11,254 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-06 22:41:15,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:16,005 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16285 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:41:16,058 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:41:16,176 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:16,176 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:41:16,177 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:16,177 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994359953]
[2023-11-06 22:41:16,177 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:41:16,177 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485702008]
[2023-11-06 22:41:16,177 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [485702008] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:16,177 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:16,178 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:41:16,179 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304023377]
[2023-11-06 22:41:16,179 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:16,184 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:41:16,184 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:16,189 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:41:16,189 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:41:16,191 INFO  L87              Difference]: Start difference. First operand 6077 states and 10137 transitions. Second operand  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:41:16,377 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:16,377 INFO  L93              Difference]: Finished difference Result 11703 states and 19526 transitions.
[2023-11-06 22:41:16,378 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:41:16,380 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 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 3929
[2023-11-06 22:41:16,383 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:16,393 INFO  L225             Difference]: With dead ends: 11703
[2023-11-06 22:41:16,393 INFO  L226             Difference]: Without dead ends: 6086
[2023-11-06 22:41:16,400 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3928 GetRequests, 3926 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 22:41:16,401 INFO  L413           NwaCegarLoop]: 9658 mSDtfsCounter, 12 mSDsluCounter, 19304 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28962 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:16,402 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28962 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:41:16,410 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6086 states.
[2023-11-06 22:41:16,475 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 6078.
[2023-11-06 22:41:16,484 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6078 states, 6077 states have (on average 1.6682573638308376) internal successors, (10138), 6077 states have internal predecessors, (10138), 0 states have call successors, (0), 0 states 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 22:41:16,496 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 10138 transitions.
[2023-11-06 22:41:16,496 INFO  L78                 Accepts]: Start accepts. Automaton has 6078 states and 10138 transitions. Word has length 3929
[2023-11-06 22:41:16,500 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:16,500 INFO  L495      AbstractCegarLoop]: Abstraction has 6078 states and 10138 transitions.
[2023-11-06 22:41:16,501 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 982.25) internal successors, (3929), 4 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:41:16,502 INFO  L276                IsEmpty]: Start isEmpty. Operand 6078 states and 10138 transitions.
[2023-11-06 22:41:16,614 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2023-11-06 22:41:16,614 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:16,617 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 22:41:16,678 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-06 22:41:16,831 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:16,831 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:16,832 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:16,834 INFO  L85        PathProgramCache]: Analyzing trace with hash -1451718293, now seen corresponding path program 1 times
[2023-11-06 22:41:16,834 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:16,834 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501675894]
[2023-11-06 22:41:16,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:16,835 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:17,126 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:41:17,127 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598360650]
[2023-11-06 22:41:17,128 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:17,128 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:17,128 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:41:17,134 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:41:17,150 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-06 22:41:21,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:22,032 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16286 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-06 22:41:22,124 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:41:46,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:41:46,469 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:41:46,470 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:41:46,470 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501675894]
[2023-11-06 22:41:46,470 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:41:46,470 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598360650]
[2023-11-06 22:41:46,470 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598360650] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:41:46,470 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:41:46,471 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:41:46,472 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71803977]
[2023-11-06 22:41:46,472 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:41:46,477 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:41:46,477 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:41:46,482 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:41:46,482 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:41:46,484 INFO  L87              Difference]: Start difference. First operand 6078 states and 10138 transitions. Second operand  has 5 states, 5 states have (on average 785.8) internal successors, (3929), 5 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:41:53,172 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:41:53,172 INFO  L93              Difference]: Finished difference Result 17035 states and 28425 transitions.
[2023-11-06 22:41:53,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:41:53,173 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 785.8) internal successors, (3929), 5 states have internal predecessors, (3929), 0 states have call successors, (0), 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 3929
[2023-11-06 22:41:53,182 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:41:53,202 INFO  L225             Difference]: With dead ends: 17035
[2023-11-06 22:41:53,202 INFO  L226             Difference]: Without dead ends: 11417
[2023-11-06 22:41:53,210 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3930 GetRequests, 3925 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-06 22:41:53,212 INFO  L413           NwaCegarLoop]: 8268 mSDtfsCounter, 5484 mSDsluCounter, 23705 mSDsCounter, 0 mSdLazyCounter, 6683 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5484 SdHoareTripleChecker+Valid, 31973 SdHoareTripleChecker+Invalid, 6683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2023-11-06 22:41:53,212 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5484 Valid, 31973 Invalid, 6683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6683 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2023-11-06 22:41:53,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11417 states.
[2023-11-06 22:41:53,381 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11417 to 11407.
[2023-11-06 22:41:53,393 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11407 states, 11406 states have (on average 1.668770822374189) internal successors, (19034), 11406 states have internal predecessors, (19034), 0 states have call successors, (0), 0 states 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 22:41:53,414 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11407 states to 11407 states and 19034 transitions.
[2023-11-06 22:41:53,414 INFO  L78                 Accepts]: Start accepts. Automaton has 11407 states and 19034 transitions. Word has length 3929
[2023-11-06 22:41:53,418 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:41:53,418 INFO  L495      AbstractCegarLoop]: Abstraction has 11407 states and 19034 transitions.
[2023-11-06 22:41:53,419 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 785.8) internal successors, (3929), 5 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states 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 22:41:53,420 INFO  L276                IsEmpty]: Start isEmpty. Operand 11407 states and 19034 transitions.
[2023-11-06 22:41:53,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3931
[2023-11-06 22:41:53,533 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:41:53,536 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:53,596 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-11-06 22:41:53,750 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:53,751 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:41:53,751 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:41:53,752 INFO  L85        PathProgramCache]: Analyzing trace with hash -68639512, now seen corresponding path program 1 times
[2023-11-06 22:41:53,753 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:41:53,753 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655189092]
[2023-11-06 22:41:53,753 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:53,753 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:41:54,157 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:41:54,157 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216794627]
[2023-11-06 22:41:54,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:41:54,159 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:41:54,159 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:41:54,160 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:41:54,182 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-06 22:41:58,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:41:58,857 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16289 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 22:41:58,932 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:42:02,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 4 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:42:02,088 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:42:02,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked.
[2023-11-06 22:42:02,188 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:42:02,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655189092]
[2023-11-06 22:42:02,188 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:42:02,189 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216794627]
[2023-11-06 22:42:02,189 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [216794627] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:42:02,189 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:42:02,191 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2023-11-06 22:42:02,191 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903867056]
[2023-11-06 22:42:02,191 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:42:02,196 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:42:02,196 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:42:02,200 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:42:02,201 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2023-11-06 22:42:02,202 INFO  L87              Difference]: Start difference. First operand 11407 states and 19034 transitions. Second operand  has 5 states, 5 states have (on average 749.0) internal successors, (3745), 5 states have internal predecessors, (3745), 0 states have call successors, (0), 0 states 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 22:42:02,643 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:42:02,643 INFO  L93              Difference]: Finished difference Result 28244 states and 47134 transitions.
[2023-11-06 22:42:02,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 22:42:02,644 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 749.0) internal successors, (3745), 5 states have internal predecessors, (3745), 0 states have call successors, (0), 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 3930
[2023-11-06 22:42:02,662 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:42:02,682 INFO  L225             Difference]: With dead ends: 28244
[2023-11-06 22:42:02,682 INFO  L226             Difference]: Without dead ends: 17297
[2023-11-06 22:42:02,697 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7858 GetRequests, 7848 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2023-11-06 22:42:02,698 INFO  L413           NwaCegarLoop]: 28361 mSDtfsCounter, 18701 mSDsluCounter, 66352 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18701 SdHoareTripleChecker+Valid, 94713 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:42:02,699 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18701 Valid, 94713 Invalid, 37 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:42:02,717 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17297 states.
[2023-11-06 22:42:02,875 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17297 to 11401.
[2023-11-06 22:42:02,886 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11401 states, 11400 states have (on average 1.6686842105263158) internal successors, (19023), 11400 states have internal predecessors, (19023), 0 states have call successors, (0), 0 states 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 22:42:02,906 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11401 states to 11401 states and 19023 transitions.
[2023-11-06 22:42:02,907 INFO  L78                 Accepts]: Start accepts. Automaton has 11401 states and 19023 transitions. Word has length 3930
[2023-11-06 22:42:02,910 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:42:02,910 INFO  L495      AbstractCegarLoop]: Abstraction has 11401 states and 19023 transitions.
[2023-11-06 22:42:02,911 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 749.0) internal successors, (3745), 5 states have internal predecessors, (3745), 0 states have call successors, (0), 0 states 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 22:42:02,912 INFO  L276                IsEmpty]: Start isEmpty. Operand 11401 states and 19023 transitions.
[2023-11-06 22:42:03,017 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3932
[2023-11-06 22:42:03,017 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:42:03,020 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:03,073 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-11-06 22:42:03,242 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-06 22:42:03,243 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:42:03,243 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:42:03,245 INFO  L85        PathProgramCache]: Analyzing trace with hash -529703712, now seen corresponding path program 1 times
[2023-11-06 22:42:03,245 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:42:03,245 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272341141]
[2023-11-06 22:42:03,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:03,245 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:42:03,620 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:42:03,620 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518805305]
[2023-11-06 22:42:03,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:42:03,622 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:42:03,622 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:42:03,623 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:42:03,652 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631cc617-7ae7-452d-848e-c452dbaf9962/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-06 22:42:08,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:42:08,608 INFO  L262         TraceCheckSpWp]: Trace formula consists of 16292 conjuncts, 55 conjunts are in the unsatisfiable core
[2023-11-06 22:42:08,702 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:42:29,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:42:29,357 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:42:29,358 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:42:29,358 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272341141]
[2023-11-06 22:42:29,358 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:42:29,358 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518805305]
[2023-11-06 22:42:29,358 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [518805305] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:42:29,358 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:42:29,359 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2023-11-06 22:42:29,360 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247092662]
[2023-11-06 22:42:29,360 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:42:29,364 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-11-06 22:42:29,365 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:42:29,369 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-11-06 22:42:29,370 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306
[2023-11-06 22:42:29,371 INFO  L87              Difference]: Start difference. First operand 11401 states and 19023 transitions. Second operand  has 18 states, 18 states have (on average 218.38888888888889) internal successors, (3931), 18 states have internal predecessors, (3931), 0 states have call successors, (0), 0 states 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 22:43:00,559 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:43:00,559 INFO  L93              Difference]: Finished difference Result 43828 states and 73110 transitions.
[2023-11-06 22:43:00,560 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2023-11-06 22:43:00,561 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 218.38888888888889) internal successors, (3931), 18 states have internal predecessors, (3931), 0 states have call successors, (0), 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 3931
[2023-11-06 22:43:00,563 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:43:00,594 INFO  L225             Difference]: With dead ends: 43828
[2023-11-06 22:43:00,594 INFO  L226             Difference]: Without dead ends: 32887
[2023-11-06 22:43:00,605 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3952 GetRequests, 3914 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=336, Invalid=1224, Unknown=0, NotChecked=0, Total=1560
[2023-11-06 22:43:00,606 INFO  L413           NwaCegarLoop]: 7563 mSDtfsCounter, 113793 mSDsluCounter, 101079 mSDsCounter, 0 mSdLazyCounter, 34171 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113793 SdHoareTripleChecker+Valid, 108642 SdHoareTripleChecker+Invalid, 34735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 34171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time
[2023-11-06 22:43:00,606 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [113793 Valid, 108642 Invalid, 34735 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [564 Valid, 34171 Invalid, 0 Unknown, 0 Unchecked, 28.4s Time]
[2023-11-06 22:43:00,639 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32887 states.
[2023-11-06 22:43:00,905 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32887 to 14028.
[2023-11-06 22:43:00,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14028 states, 14027 states have (on average 1.6563056961574107) internal successors, (23233), 14027 states have internal predecessors, (23233), 0 states have call successors, (0), 0 states 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 22:43:00,955 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14028 states to 14028 states and 23233 transitions.
[2023-11-06 22:43:00,955 INFO  L78                 Accepts]: Start accepts. Automaton has 14028 states and 23233 transitions. Word has length 3931
[2023-11-06 22:43:00,960 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:43:00,960 INFO  L495      AbstractCegarLoop]: Abstraction has 14028 states and 23233 transitions.
[2023-11-06 22:43:00,961 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 218.38888888888889) internal successors, (3931), 18 states have internal predecessors, (3931), 0 states have call successors, (0), 0 states 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 22:43:00,961 INFO  L276                IsEmpty]: Start isEmpty. Operand 14028 states and 23233 transitions.