./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.1.prop1-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_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/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_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/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_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/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 c2ee8e492699fc7a144c734eb0df0fa7d7a016c58efe5f70f03aa10d89ac40c8
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 22:37:36,865 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 22:37:37,011 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 22:37:37,021 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 22:37:37,022 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 22:37:37,076 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 22:37:37,077 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 22:37:37,077 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 22:37:37,080 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 22:37:37,089 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 22:37:37,090 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 22:37:37,091 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 22:37:37,092 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 22:37:37,094 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 22:37:37,094 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 22:37:37,095 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 22:37:37,096 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 22:37:37,096 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 22:37:37,097 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 22:37:37,097 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 22:37:37,098 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 22:37:37,098 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 22:37:37,099 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 22:37:37,099 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 22:37:37,100 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 22:37:37,100 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:37:37,101 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 22:37:37,102 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 22:37:37,102 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 22:37:37,103 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 22:37:37,103 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 22:37:37,104 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 22:37:37,104 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 22:37:37,104 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 22:37:37,105 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 22:37:37,105 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 22:37:37,105 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_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/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_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/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 -> c2ee8e492699fc7a144c734eb0df0fa7d7a016c58efe5f70f03aa10d89ac40c8
[2023-11-06 22:37:37,391 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 22:37:37,430 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 22:37:37,433 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 22:37:37,436 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 22:37:37,437 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 22:37:37,439 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.1.prop1-func-interl.c
[2023-11-06 22:37:40,973 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 22:37:41,664 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 22:37:41,666 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.1.prop1-func-interl.c
[2023-11-06 22:37:41,717 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/data/3944fd93b/f7163476756d4765a73c1397bd13a3ee/FLAGfa2de8b06
[2023-11-06 22:37:41,736 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/data/3944fd93b/f7163476756d4765a73c1397bd13a3ee
[2023-11-06 22:37:41,740 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 22:37:41,742 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 22:37:41,745 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 22:37:41,746 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 22:37:41,757 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 22:37:41,758 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:37:41" (1/1) ...
[2023-11-06 22:37:41,760 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c34c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:41, skipping insertion in model container
[2023-11-06 22:37:41,760 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:37:41" (1/1) ...
[2023-11-06 22:37:41,962 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 22:37:42,397 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_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.1.prop1-func-interl.c[1172,1185]
[2023-11-06 22:37:43,737 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:37:43,752 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 22:37:43,768 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_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.1.prop1-func-interl.c[1172,1185]
[2023-11-06 22:37:44,502 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:37:44,521 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 22:37:44,523 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44 WrapperNode
[2023-11-06 22:37:44,523 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 22:37:44,525 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 22:37:44,525 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 22:37:44,526 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 22:37:44,535 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:44,953 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:49,254 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31513
[2023-11-06 22:37:49,254 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 22:37:49,255 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 22:37:49,256 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 22:37:49,256 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 22:37:49,267 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:49,267 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:50,139 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:50,141 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:51,477 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:51,598 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:51,788 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:51,902 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:52,440 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 22:37:52,441 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 22:37:52,441 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 22:37:52,441 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 22:37:52,442 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (1/1) ...
[2023-11-06 22:37:52,453 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:37:52,471 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:37:52,486 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 22:37:52,489 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 22:37:52,519 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 22:37:52,520 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 22:37:52,520 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 22:37:52,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 22:37:54,416 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 22:37:54,418 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 22:38:16,921 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 22:38:16,966 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 22:38:16,966 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 22:38:16,974 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:16 BoogieIcfgContainer
[2023-11-06 22:38:16,975 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 22:38:16,978 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 22:38:16,978 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 22:38:16,981 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 22:38:16,982 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:37:41" (1/3) ...
[2023-11-06 22:38:16,982 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:16, skipping insertion in model container
[2023-11-06 22:38:16,983 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:44" (2/3) ...
[2023-11-06 22:38:16,983 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:16, skipping insertion in model container
[2023-11-06 22:38:16,983 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:16" (3/3) ...
[2023-11-06 22:38:16,984 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lifts.1.prop1-func-interl.c
[2023-11-06 22:38:17,004 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 22:38:17,004 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 22:38:17,189 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 22:38:17,196 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;@7ee89f78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 22:38:17,197 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 22:38:17,224 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7217 states, 7215 states have (on average 1.6672210672210672) internal successors, (12029), 7216 states have internal predecessors, (12029), 0 states have call successors, (0), 0 states 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 22:38:17,249 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 336
[2023-11-06 22:38:17,249 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:17,250 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 22:38:17,251 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:17,256 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:17,257 INFO  L85        PathProgramCache]: Analyzing trace with hash 1648304900, now seen corresponding path program 1 times
[2023-11-06 22:38:17,267 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:17,267 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936630005]
[2023-11-06 22:38:17,268 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:17,268 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:17,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:38:19,546 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 22:38:19,546 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:38:19,547 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936630005]
[2023-11-06 22:38:19,548 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936630005] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:38:19,548 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:38:19,548 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:38:19,550 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860306768]
[2023-11-06 22:38:19,551 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:38:19,559 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:38:19,559 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:38:19,601 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:38:19,602 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:38:19,623 INFO  L87              Difference]: Start difference. First operand  has 7217 states, 7215 states have (on average 1.6672210672210672) internal successors, (12029), 7216 states have internal predecessors, (12029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 22:38:20,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:38:20,750 INFO  L93              Difference]: Finished difference Result 14229 states and 23721 transitions.
[2023-11-06 22:38:20,752 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:38:20,753 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 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 335
[2023-11-06 22:38:20,756 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:38:20,808 INFO  L225             Difference]: With dead ends: 14229
[2023-11-06 22:38:20,808 INFO  L226             Difference]: Without dead ends: 7215
[2023-11-06 22:38:20,823 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 22:38:20,826 INFO  L413           NwaCegarLoop]: 12021 mSDtfsCounter, 1 mSDsluCounter, 24036 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36057 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-11-06 22:38:20,827 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36057 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-11-06 22:38:20,861 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7215 states.
[2023-11-06 22:38:21,173 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7215 to 7215.
[2023-11-06 22:38:21,192 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7215 states, 7214 states have (on average 1.6668976989187692) internal successors, (12025), 7214 states have internal predecessors, (12025), 0 states have call successors, (0), 0 states 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 22:38:21,221 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7215 states to 7215 states and 12025 transitions.
[2023-11-06 22:38:21,223 INFO  L78                 Accepts]: Start accepts. Automaton has 7215 states and 12025 transitions. Word has length 335
[2023-11-06 22:38:21,224 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:38:21,224 INFO  L495      AbstractCegarLoop]: Abstraction has 7215 states and 12025 transitions.
[2023-11-06 22:38:21,225 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 22:38:21,225 INFO  L276                IsEmpty]: Start isEmpty. Operand 7215 states and 12025 transitions.
[2023-11-06 22:38:21,233 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 337
[2023-11-06 22:38:21,233 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:21,234 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 22:38:21,234 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 22:38:21,234 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:21,235 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:21,235 INFO  L85        PathProgramCache]: Analyzing trace with hash -440428724, now seen corresponding path program 1 times
[2023-11-06 22:38:21,236 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:21,236 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416240042]
[2023-11-06 22:38:21,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:21,237 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:21,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:38:22,087 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 22:38:22,088 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:38:22,088 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416240042]
[2023-11-06 22:38:22,089 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416240042] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:38:22,089 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:38:22,089 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:38:22,089 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358427894]
[2023-11-06 22:38:22,090 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:38:22,091 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:38:22,092 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:38:22,093 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:38:22,093 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:38:22,094 INFO  L87              Difference]: Start difference. First operand 7215 states and 12025 transitions. Second operand  has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 22:38:22,441 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:38:22,441 INFO  L93              Difference]: Finished difference Result 14230 states and 23717 transitions.
[2023-11-06 22:38:22,442 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:38:22,443 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 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 336
[2023-11-06 22:38:22,444 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:38:22,482 INFO  L225             Difference]: With dead ends: 14230
[2023-11-06 22:38:22,482 INFO  L226             Difference]: Without dead ends: 7218
[2023-11-06 22:38:22,496 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 22:38:22,499 INFO  L413           NwaCegarLoop]: 12021 mSDtfsCounter, 1 mSDsluCounter, 24033 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36054 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 22:38:22,500 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36054 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:38:22,518 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7218 states.
[2023-11-06 22:38:22,735 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7218 to 7217.
[2023-11-06 22:38:22,756 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7217 states, 7216 states have (on average 1.6667128603104213) internal successors, (12027), 7216 states have internal predecessors, (12027), 0 states have call successors, (0), 0 states 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 22:38:22,792 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7217 states to 7217 states and 12027 transitions.
[2023-11-06 22:38:22,793 INFO  L78                 Accepts]: Start accepts. Automaton has 7217 states and 12027 transitions. Word has length 336
[2023-11-06 22:38:22,793 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:38:22,794 INFO  L495      AbstractCegarLoop]: Abstraction has 7217 states and 12027 transitions.
[2023-11-06 22:38:22,794 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 22:38:22,795 INFO  L276                IsEmpty]: Start isEmpty. Operand 7217 states and 12027 transitions.
[2023-11-06 22:38:22,800 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 338
[2023-11-06 22:38:22,800 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:22,800 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 22:38:22,801 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 22:38:22,801 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:22,802 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:22,802 INFO  L85        PathProgramCache]: Analyzing trace with hash -978819042, now seen corresponding path program 1 times
[2023-11-06 22:38:22,802 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:22,803 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565932080]
[2023-11-06 22:38:22,803 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:22,804 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:22,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:38:23,904 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 22:38:23,905 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:38:23,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565932080]
[2023-11-06 22:38:23,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565932080] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:38:23,906 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:38:23,906 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:38:23,906 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120818267]
[2023-11-06 22:38:23,906 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:38:23,908 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:38:23,908 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:38:23,909 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:38:23,909 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:38:23,910 INFO  L87              Difference]: Start difference. First operand 7217 states and 12027 transitions. Second operand  has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 22:38:24,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:38:24,678 INFO  L93              Difference]: Finished difference Result 21523 states and 35872 transitions.
[2023-11-06 22:38:24,678 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:38:24,679 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 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 337
[2023-11-06 22:38:24,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:38:24,901 INFO  L225             Difference]: With dead ends: 21523
[2023-11-06 22:38:24,902 INFO  L226             Difference]: Without dead ends: 14509
[2023-11-06 22:38:24,913 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-06 22:38:24,918 INFO  L413           NwaCegarLoop]: 12493 mSDtfsCounter, 47204 mSDsluCounter, 24032 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47204 SdHoareTripleChecker+Valid, 36525 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:38:24,919 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [47204 Valid, 36525 Invalid, 20 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:38:24,942 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14509 states.
[2023-11-06 22:38:25,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14509 to 7507.
[2023-11-06 22:38:25,129 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7507 states, 7506 states have (on average 1.666533439914735) internal successors, (12509), 7506 states have internal predecessors, (12509), 0 states have call successors, (0), 0 states 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 22:38:25,152 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 12509 transitions.
[2023-11-06 22:38:25,152 INFO  L78                 Accepts]: Start accepts. Automaton has 7507 states and 12509 transitions. Word has length 337
[2023-11-06 22:38:25,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:38:25,154 INFO  L495      AbstractCegarLoop]: Abstraction has 7507 states and 12509 transitions.
[2023-11-06 22:38:25,155 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 22:38:25,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 7507 states and 12509 transitions.
[2023-11-06 22:38:25,640 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4981
[2023-11-06 22:38:25,641 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:25,644 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:25,645 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 22:38:25,645 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:25,645 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:25,648 INFO  L85        PathProgramCache]: Analyzing trace with hash -275847691, now seen corresponding path program 1 times
[2023-11-06 22:38:25,649 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:25,649 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135598854]
[2023-11-06 22:38:25,651 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:25,651 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:26,419 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:38:26,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349943409]
[2023-11-06 22:38:26,422 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:26,422 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:38:26,422 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:38:26,426 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:38:26,451 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 22:38:33,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:38:33,966 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21707 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-06 22:38:34,134 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:38:35,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 198 backedges. 4 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:38:35,003 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:38:35,384 INFO  L134       CoverageAnalysis]: Checked inductivity of 198 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked.
[2023-11-06 22:38:35,384 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:38:35,385 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135598854]
[2023-11-06 22:38:35,385 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:38:35,385 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349943409]
[2023-11-06 22:38:35,385 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349943409] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:38:35,386 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:38:35,388 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-06 22:38:35,388 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45585811]
[2023-11-06 22:38:35,388 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:38:35,396 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 22:38:35,396 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:38:35,402 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 22:38:35,403 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2023-11-06 22:38:35,405 INFO  L87              Difference]: Start difference. First operand 7507 states and 12509 transitions. Second operand  has 6 states, 6 states have (on average 798.1666666666666) internal successors, (4789), 6 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states 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 22:38:54,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:38:54,679 INFO  L93              Difference]: Finished difference Result 34993 states and 58139 transitions.
[2023-11-06 22:38:54,680 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:38:54,682 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 798.1666666666666) internal successors, (4789), 6 states have internal predecessors, (4789), 0 states have call successors, (0), 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 4980
[2023-11-06 22:38:54,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:38:54,734 INFO  L225             Difference]: With dead ends: 34993
[2023-11-06 22:38:54,734 INFO  L226             Difference]: Without dead ends: 21520
[2023-11-06 22:38:54,751 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9959 GetRequests, 9948 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2023-11-06 22:38:54,752 INFO  L413           NwaCegarLoop]: 19779 mSDtfsCounter, 53434 mSDsluCounter, 47984 mSDsCounter, 0 mSdLazyCounter, 16791 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53434 SdHoareTripleChecker+Valid, 67763 SdHoareTripleChecker+Invalid, 17345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 16791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:38:54,753 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [53434 Valid, 67763 Invalid, 17345 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [554 Valid, 16791 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time]
[2023-11-06 22:38:54,781 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21520 states.
[2023-11-06 22:38:54,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21520 to 7507.
[2023-11-06 22:38:54,985 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7507 states, 7506 states have (on average 1.666533439914735) internal successors, (12509), 7506 states have internal predecessors, (12509), 0 states have call successors, (0), 0 states 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 22:38:55,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 12509 transitions.
[2023-11-06 22:38:55,036 INFO  L78                 Accepts]: Start accepts. Automaton has 7507 states and 12509 transitions. Word has length 4980
[2023-11-06 22:38:55,047 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:38:55,048 INFO  L495      AbstractCegarLoop]: Abstraction has 7507 states and 12509 transitions.
[2023-11-06 22:38:55,050 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 798.1666666666666) internal successors, (4789), 6 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states 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 22:38:55,050 INFO  L276                IsEmpty]: Start isEmpty. Operand 7507 states and 12509 transitions.
[2023-11-06 22:38:55,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4982
[2023-11-06 22:38:55,302 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:55,305 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:55,385 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 22:38:55,519 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:38:55,520 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:55,521 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:55,523 INFO  L85        PathProgramCache]: Analyzing trace with hash 1638564923, now seen corresponding path program 1 times
[2023-11-06 22:38:55,523 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:55,523 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293870714]
[2023-11-06 22:38:55,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:55,524 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:56,232 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:38:56,233 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683399470]
[2023-11-06 22:38:56,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:56,236 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:38:56,237 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:38:56,240 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:38:56,259 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3a02b-468e-4b3b-ad87-8bd961f3c3f3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 22:39:03,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:39:03,786 INFO  L262         TraceCheckSpWp]: Trace formula consists of 21710 conjuncts, 44 conjunts are in the unsatisfiable core
[2023-11-06 22:39:04,007 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:39:47,883 INFO  L134       CoverageAnalysis]: Checked inductivity of 198 backedges. 4 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:39:47,883 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:40:29,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 198 backedges. 94 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:40:29,761 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:29,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293870714]
[2023-11-06 22:40:29,761 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:40:29,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683399470]
[2023-11-06 22:40:29,762 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683399470] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-06 22:40:29,762 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-06 22:40:29,765 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2023-11-06 22:40:29,765 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551380010]
[2023-11-06 22:40:29,765 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-06 22:40:29,780 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2023-11-06 22:40:29,780 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:29,793 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2023-11-06 22:40:29,794 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122
[2023-11-06 22:40:29,798 INFO  L87              Difference]: Start difference. First operand 7507 states and 12509 transitions. Second operand  has 34 states, 34 states have (on average 292.7647058823529) internal successors, (9954), 34 states have internal predecessors, (9954), 0 states have call successors, (0), 0 states 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 22:40:38,447 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:40:40,468 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:40:44,407 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:40:46,416 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:40:47,549 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:40:48,978 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:40:51,043 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:40:53,245 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:40:55,251 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:40:57,313 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-11-06 22:41:01,943 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-06 22:41:04,054 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-06 22:41:06,062 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-06 22:41:08,505 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []