./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.4.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version e7bb482b
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/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_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/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_25413414-77e9-42c8-9fab-f29dfb624b27/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 6a472d9c6e5a191b6114a71c0f9f5e3ee803c9f40323b0c16fee63da2850e0dc
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 23:10:09,377 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 23:10:09,530 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 23:10:09,543 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 23:10:09,545 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 23:10:09,590 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 23:10:09,591 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 23:10:09,592 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 23:10:09,594 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 23:10:09,601 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 23:10:09,603 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 23:10:09,603 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 23:10:09,604 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 23:10:09,607 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 23:10:09,607 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 23:10:09,608 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 23:10:09,609 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 23:10:09,609 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 23:10:09,610 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 23:10:09,610 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 23:10:09,611 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 23:10:09,612 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 23:10:09,613 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 23:10:09,614 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 23:10:09,615 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 23:10:09,615 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 23:10:09,616 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 23:10:09,617 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 23:10:09,617 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 23:10:09,618 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 23:10:09,620 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 23:10:09,620 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 23:10:09,621 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 23:10:09,621 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 23:10:09,622 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 23:10:09,622 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 23:10:09,622 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_25413414-77e9-42c8-9fab-f29dfb624b27/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_25413414-77e9-42c8-9fab-f29dfb624b27/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 -> 6a472d9c6e5a191b6114a71c0f9f5e3ee803c9f40323b0c16fee63da2850e0dc
[2023-11-06 23:10:10,059 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 23:10:10,133 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 23:10:10,137 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 23:10:10,139 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 23:10:10,145 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 23:10:10,154 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.4.prop1-func-interl.c
[2023-11-06 23:10:13,776 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 23:10:14,969 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 23:10:14,969 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.4.prop1-func-interl.c
[2023-11-06 23:10:15,087 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/data/7e9fdc97e/66f5a4690e5a4fdb854f6da079b9ec1c/FLAG89b278afe
[2023-11-06 23:10:15,105 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/data/7e9fdc97e/66f5a4690e5a4fdb854f6da079b9ec1c
[2023-11-06 23:10:15,111 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 23:10:15,114 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 23:10:15,117 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 23:10:15,119 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 23:10:15,124 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 23:10:15,125 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:15" (1/1) ...
[2023-11-06 23:10:15,126 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229999fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:15, skipping insertion in model container
[2023-11-06 23:10:15,127 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:15" (1/1) ...
[2023-11-06 23:10:15,664 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 23:10:16,330 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_25413414-77e9-42c8-9fab-f29dfb624b27/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.4.prop1-func-interl.c[1175,1188]
[2023-11-06 23:10:20,267 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 23:10:20,281 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 23:10:20,327 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_25413414-77e9-42c8-9fab-f29dfb624b27/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rushhour.4.prop1-func-interl.c[1175,1188]
[2023-11-06 23:10:23,408 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 23:10:23,428 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 23:10:23,429 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23 WrapperNode
[2023-11-06 23:10:23,430 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 23:10:23,431 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 23:10:23,432 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 23:10:23,432 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 23:10:23,441 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:24,320 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:31,104 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80984
[2023-11-06 23:10:31,104 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 23:10:31,105 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 23:10:31,106 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 23:10:31,106 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 23:10:31,124 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:31,124 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:33,546 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:33,546 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:36,827 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:37,229 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:37,604 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:37,857 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:39,325 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 23:10:39,326 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 23:10:39,327 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 23:10:39,327 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 23:10:39,334 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ...
[2023-11-06 23:10:39,348 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 23:10:39,361 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:10:39,391 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 23:10:39,430 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 23:10:39,448 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 23:10:39,449 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 23:10:39,450 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 23:10:39,450 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 23:10:44,897 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 23:10:44,900 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 23:11:34,702 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 23:11:34,770 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 23:11:34,771 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 23:11:34,784 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:34 BoogieIcfgContainer
[2023-11-06 23:11:34,784 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 23:11:34,787 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 23:11:34,787 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 23:11:34,791 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 23:11:34,791 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:10:15" (1/3) ...
[2023-11-06 23:11:34,792 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6cfb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:34, skipping insertion in model container
[2023-11-06 23:11:34,792 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (2/3) ...
[2023-11-06 23:11:34,793 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6cfb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:34, skipping insertion in model container
[2023-11-06 23:11:34,793 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:34" (3/3) ...
[2023-11-06 23:11:34,794 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.rushhour.4.prop1-func-interl.c
[2023-11-06 23:11:34,814 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 23:11:34,814 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 23:11:35,247 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 23:11:35,256 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;@15907b09, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 23:11:35,257 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 23:11:35,309 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 13924 states, 13922 states have (on average 1.6695877029162476) internal successors, (23244), 13923 states have internal predecessors, (23244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:35,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 270
[2023-11-06 23:11:35,350 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:11:35,351 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]
[2023-11-06 23:11:35,351 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:11:35,360 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:11:35,361 INFO  L85        PathProgramCache]: Analyzing trace with hash 1593515747, now seen corresponding path program 1 times
[2023-11-06 23:11:35,371 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:11:35,371 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746015573]
[2023-11-06 23:11:35,372 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:35,372 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:11:36,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:11:37,646 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:11:37,647 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:11:37,647 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746015573]
[2023-11-06 23:11:37,648 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746015573] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:11:37,648 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:11:37,649 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:11:37,650 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472850995]
[2023-11-06 23:11:37,652 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:11:37,661 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:11:37,661 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:11:37,707 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:11:37,708 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:11:37,757 INFO  L87              Difference]: Start difference. First operand  has 13924 states, 13922 states have (on average 1.6695877029162476) internal successors, (23244), 13923 states have internal predecessors, (23244), 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 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:39,140 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:11:39,140 INFO  L93              Difference]: Finished difference Result 27535 states and 45971 transitions.
[2023-11-06 23:11:39,141 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:11:39,144 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 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 269
[2023-11-06 23:11:39,149 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:11:39,262 INFO  L225             Difference]: With dead ends: 27535
[2023-11-06 23:11:39,262 INFO  L226             Difference]: Without dead ends: 13922
[2023-11-06 23:11:39,289 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:11:39,294 INFO  L413           NwaCegarLoop]: 23236 mSDtfsCounter, 1 mSDsluCounter, 46466 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69702 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:11:39,296 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69702 Invalid, 11 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:11:39,353 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13922 states.
[2023-11-06 23:11:39,738 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13922 to 13922.
[2023-11-06 23:11:39,779 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13922 states, 13921 states have (on average 1.6694203002657855) internal successors, (23240), 13921 states have internal predecessors, (23240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:39,864 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13922 states to 13922 states and 23240 transitions.
[2023-11-06 23:11:39,865 INFO  L78                 Accepts]: Start accepts. Automaton has 13922 states and 23240 transitions. Word has length 269
[2023-11-06 23:11:39,871 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:11:39,872 INFO  L495      AbstractCegarLoop]: Abstraction has 13922 states and 23240 transitions.
[2023-11-06 23:11:39,873 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:39,873 INFO  L276                IsEmpty]: Start isEmpty. Operand 13922 states and 23240 transitions.
[2023-11-06 23:11:39,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 271
[2023-11-06 23:11:39,881 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:11:39,882 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]
[2023-11-06 23:11:39,883 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 23:11:39,883 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:11:39,884 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:11:39,884 INFO  L85        PathProgramCache]: Analyzing trace with hash -2138892863, now seen corresponding path program 1 times
[2023-11-06 23:11:39,885 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:11:39,885 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869535581]
[2023-11-06 23:11:39,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:39,886 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:11:40,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:11:41,289 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:11:41,289 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:11:41,290 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869535581]
[2023-11-06 23:11:41,291 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869535581] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:11:41,291 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:11:41,291 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:11:41,292 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647923103]
[2023-11-06 23:11:41,292 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:11:41,296 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:11:41,296 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:11:41,298 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:11:41,299 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:11:41,299 INFO  L87              Difference]: Start difference. First operand 13922 states and 23240 transitions. Second operand  has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:42,775 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:11:42,776 INFO  L93              Difference]: Finished difference Result 27536 states and 45967 transitions.
[2023-11-06 23:11:42,776 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:11:42,777 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 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 270
[2023-11-06 23:11:42,778 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:11:42,880 INFO  L225             Difference]: With dead ends: 27536
[2023-11-06 23:11:42,880 INFO  L226             Difference]: Without dead ends: 13925
[2023-11-06 23:11:42,907 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:11:42,910 INFO  L413           NwaCegarLoop]: 23236 mSDtfsCounter, 1 mSDsluCounter, 46463 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69699 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-06 23:11:42,912 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69699 Invalid, 14 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-06 23:11:42,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13925 states.
[2023-11-06 23:11:43,266 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13925 to 13924.
[2023-11-06 23:11:43,293 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13924 states, 13923 states have (on average 1.6693241399123753) internal successors, (23242), 13923 states have internal predecessors, (23242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:43,350 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13924 states to 13924 states and 23242 transitions.
[2023-11-06 23:11:43,351 INFO  L78                 Accepts]: Start accepts. Automaton has 13924 states and 23242 transitions. Word has length 270
[2023-11-06 23:11:43,351 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:11:43,352 INFO  L495      AbstractCegarLoop]: Abstraction has 13924 states and 23242 transitions.
[2023-11-06 23:11:43,352 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:43,352 INFO  L276                IsEmpty]: Start isEmpty. Operand 13924 states and 23242 transitions.
[2023-11-06 23:11:43,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2023-11-06 23:11:43,357 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:11:43,358 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]
[2023-11-06 23:11:43,358 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 23:11:43,358 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:11:43,359 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:11:43,360 INFO  L85        PathProgramCache]: Analyzing trace with hash -2091600195, now seen corresponding path program 1 times
[2023-11-06 23:11:43,360 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:11:43,361 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99737373]
[2023-11-06 23:11:43,361 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:43,361 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:11:43,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:11:44,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:11:44,623 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:11:44,623 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99737373]
[2023-11-06 23:11:44,623 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99737373] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:11:44,624 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:11:44,625 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:11:44,625 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619247868]
[2023-11-06 23:11:44,625 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:11:44,627 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:11:44,628 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:11:44,629 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:11:44,629 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:11:44,630 INFO  L87              Difference]: Start difference. First operand 13924 states and 23242 transitions. Second operand  has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:46,004 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:11:46,004 INFO  L93              Difference]: Finished difference Result 41140 states and 68677 transitions.
[2023-11-06 23:11:46,005 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:11:46,005 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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 271
[2023-11-06 23:11:46,006 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:11:46,071 INFO  L225             Difference]: With dead ends: 41140
[2023-11-06 23:11:46,071 INFO  L226             Difference]: Without dead ends: 27527
[2023-11-06 23:11:46,100 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:11:46,107 INFO  L413           NwaCegarLoop]: 23367 mSDtfsCounter, 22707 mSDsluCounter, 46590 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22707 SdHoareTripleChecker+Valid, 69957 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-06 23:11:46,109 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22707 Valid, 69957 Invalid, 19 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-06 23:11:46,156 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27527 states.
[2023-11-06 23:11:46,504 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27527 to 13926.
[2023-11-06 23:11:46,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13926 states, 13925 states have (on average 1.6692280071813286) internal successors, (23244), 13925 states have internal predecessors, (23244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:46,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13926 states to 13926 states and 23244 transitions.
[2023-11-06 23:11:46,567 INFO  L78                 Accepts]: Start accepts. Automaton has 13926 states and 23244 transitions. Word has length 271
[2023-11-06 23:11:46,568 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:11:46,569 INFO  L495      AbstractCegarLoop]: Abstraction has 13926 states and 23244 transitions.
[2023-11-06 23:11:46,570 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:46,573 INFO  L276                IsEmpty]: Start isEmpty. Operand 13926 states and 23244 transitions.
[2023-11-06 23:11:46,578 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 273
[2023-11-06 23:11:46,579 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:11:46,579 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]
[2023-11-06 23:11:46,579 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 23:11:46,581 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:11:46,583 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:11:46,583 INFO  L85        PathProgramCache]: Analyzing trace with hash 791784741, now seen corresponding path program 1 times
[2023-11-06 23:11:46,583 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:11:46,589 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705222068]
[2023-11-06 23:11:46,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:46,590 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:11:47,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:11:48,286 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:11:48,287 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:11:48,287 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705222068]
[2023-11-06 23:11:48,287 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705222068] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:11:48,287 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:11:48,288 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-06 23:11:48,289 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164611779]
[2023-11-06 23:11:48,289 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:11:48,290 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 23:11:48,290 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:11:48,291 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 23:11:48,291 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-06 23:11:48,291 INFO  L87              Difference]: Start difference. First operand 13926 states and 23244 transitions. Second operand  has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:50,040 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:11:50,040 INFO  L93              Difference]: Finished difference Result 41227 states and 68818 transitions.
[2023-11-06 23:11:50,041 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-06 23:11:50,041 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 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 272
[2023-11-06 23:11:50,042 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:11:50,091 INFO  L225             Difference]: With dead ends: 41227
[2023-11-06 23:11:50,091 INFO  L226             Difference]: Without dead ends: 27612
[2023-11-06 23:11:50,108 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-11-06 23:11:50,116 INFO  L413           NwaCegarLoop]: 23362 mSDtfsCounter, 91246 mSDsluCounter, 69165 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91246 SdHoareTripleChecker+Valid, 92527 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-06 23:11:50,117 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [91246 Valid, 92527 Invalid, 32 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-06 23:11:50,156 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27612 states.
[2023-11-06 23:11:50,456 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27612 to 14007.
[2023-11-06 23:11:50,480 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14007 states, 14006 states have (on average 1.6692131943452806) internal successors, (23379), 14006 states have internal predecessors, (23379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:50,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14007 states to 14007 states and 23379 transitions.
[2023-11-06 23:11:50,515 INFO  L78                 Accepts]: Start accepts. Automaton has 14007 states and 23379 transitions. Word has length 272
[2023-11-06 23:11:50,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:11:50,516 INFO  L495      AbstractCegarLoop]: Abstraction has 14007 states and 23379 transitions.
[2023-11-06 23:11:50,516 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:11:50,517 INFO  L276                IsEmpty]: Start isEmpty. Operand 14007 states and 23379 transitions.
[2023-11-06 23:11:51,289 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9260
[2023-11-06 23:11:51,289 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:11:51,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 23:11:51,300 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-06 23:11:51,301 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:11:51,301 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:11:51,307 INFO  L85        PathProgramCache]: Analyzing trace with hash -801825203, now seen corresponding path program 1 times
[2023-11-06 23:11:51,308 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:11:51,308 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972232399]
[2023-11-06 23:11:51,312 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:51,313 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:11:53,602 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:11:53,602 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341960686]
[2023-11-06 23:11:53,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:11:53,607 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:11:53,608 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:11:53,612 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:11:53,614 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 23:12:40,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:12:40,704 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83103 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-06 23:12:41,152 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:12:43,065 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:12:43,065 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:12:43,066 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:12:43,066 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972232399]
[2023-11-06 23:12:43,066 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:12:43,066 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341960686]
[2023-11-06 23:12:43,066 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341960686] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:12:43,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:12:43,071 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:12:43,071 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588966633]
[2023-11-06 23:12:43,072 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:12:43,084 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:12:43,084 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:12:43,095 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:12:43,095 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:12:43,099 INFO  L87              Difference]: Start difference. First operand 14007 states and 23379 transitions. Second operand  has 4 states, 4 states have (on average 2314.75) internal successors, (9259), 4 states have internal predecessors, (9259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:12:51,755 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-06 23:12:56,272 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:12:56,272 INFO  L93              Difference]: Finished difference Result 27705 states and 46241 transitions.
[2023-11-06 23:12:56,272 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:12:56,274 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2314.75) internal successors, (9259), 4 states have internal predecessors, (9259), 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 9259
[2023-11-06 23:12:56,275 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:12:56,325 INFO  L225             Difference]: With dead ends: 27705
[2023-11-06 23:12:56,325 INFO  L226             Difference]: Without dead ends: 14090
[2023-11-06 23:12:56,341 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9259 GetRequests, 9256 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 23:12:56,342 INFO  L413           NwaCegarLoop]: 16344 mSDtfsCounter, 45640 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 7343 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45640 SdHoareTripleChecker+Valid, 16951 SdHoareTripleChecker+Invalid, 7343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time
[2023-11-06 23:12:56,343 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45640 Valid, 16951 Invalid, 7343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7343 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time]
[2023-11-06 23:12:56,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14090 states.
[2023-11-06 23:12:56,580 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14090 to 14007.
[2023-11-06 23:12:56,599 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14007 states, 14006 states have (on average 1.669141796372983) internal successors, (23378), 14006 states have internal predecessors, (23378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:12:56,643 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14007 states to 14007 states and 23378 transitions.
[2023-11-06 23:12:56,643 INFO  L78                 Accepts]: Start accepts. Automaton has 14007 states and 23378 transitions. Word has length 9259
[2023-11-06 23:12:56,646 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:12:56,646 INFO  L495      AbstractCegarLoop]: Abstraction has 14007 states and 23378 transitions.
[2023-11-06 23:12:56,649 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2314.75) internal successors, (9259), 4 states have internal predecessors, (9259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-06 23:12:56,649 INFO  L276                IsEmpty]: Start isEmpty. Operand 14007 states and 23378 transitions.
[2023-11-06 23:12:57,396 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9261
[2023-11-06 23:12:57,396 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:12:57,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 23:12:57,611 WARN  L435       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process
[2023-11-06 23:12:57,681 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 137
[2023-11-06 23:12:57,681 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:12:57,681 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:12:57,683 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:12:57,687 INFO  L85        PathProgramCache]: Analyzing trace with hash -346191641, now seen corresponding path program 1 times
[2023-11-06 23:12:57,688 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:12:57,688 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499204010]
[2023-11-06 23:12:57,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:12:57,690 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:12:59,355 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:12:59,356 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757562363]
[2023-11-06 23:12:59,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:12:59,360 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:12:59,360 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:12:59,361 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:12:59,384 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25413414-77e9-42c8-9fab-f29dfb624b27/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process