./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.3.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version a0165632
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_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dc21aecf5e7aa9d96660cf5846e9cc7bd2e23609bc3b71a2bdc1157bb83d2fe1
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 16:53:49,530 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-08 16:53:49,627 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-08 16:53:49,637 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 16:53:49,637 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 16:53:49,680 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 16:53:49,681 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 16:53:49,681 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 16:53:49,682 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 16:53:49,683 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-08 16:53:49,683 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 16:53:49,683 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 16:53:49,684 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 16:53:49,685 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-08 16:53:49,685 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-08 16:53:49,686 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 16:53:49,686 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-08 16:53:49,687 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-08 16:53:49,687 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-08 16:53:49,687 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 16:53:49,688 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 16:53:49,688 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 16:53:49,689 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-08 16:53:49,689 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-08 16:53:49,690 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-08 16:53:49,690 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 16:53:49,690 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-08 16:53:49,691 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 16:53:49,691 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-08 16:53:49,692 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:53:49,692 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 16:53:49,693 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 16:53:49,693 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 16:53:49,694 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-08 16:53:49,694 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 16:53:49,694 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 16:53:49,695 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 16:53:49,695 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 16:53:49,695 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 16:53:49,696 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_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/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_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc21aecf5e7aa9d96660cf5846e9cc7bd2e23609bc3b71a2bdc1157bb83d2fe1
[2024-11-08 16:53:50,013 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 16:53:50,054 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 16:53:50,057 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 16:53:50,060 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-08 16:53:50,061 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-08 16:53:50,063 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.3.prop1-func-interl.c
Unable to find full path for "g++"
[2024-11-08 16:53:52,301 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-08 16:53:52,872 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-08 16:53:52,874 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.3.prop1-func-interl.c
[2024-11-08 16:53:52,908 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/data/b5715659e/8f2913870ee345b68fcbc05de447912b/FLAG891d6c8a4
[2024-11-08 16:53:52,929 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/data/b5715659e/8f2913870ee345b68fcbc05de447912b
[2024-11-08 16:53:52,935 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 16:53:52,939 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 16:53:52,941 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 16:53:52,941 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 16:53:52,948 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 16:53:52,949 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:53:52" (1/1) ...
[2024-11-08 16:53:52,950 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f67af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:52, skipping insertion in model container
[2024-11-08 16:53:52,950 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:53:52" (1/1) ...
[2024-11-08 16:53:53,089 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-08 16:53:53,454 WARN  L250   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_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.3.prop1-func-interl.c[1180,1193]
[2024-11-08 16:53:54,580 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:53:54,605 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-08 16:53:54,624 WARN  L250   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_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.3.prop1-func-interl.c[1180,1193]
[2024-11-08 16:53:55,285 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:53:55,304 INFO  L204         MainTranslator]: Completed translation
[2024-11-08 16:53:55,305 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55 WrapperNode
[2024-11-08 16:53:55,305 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 16:53:55,306 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 16:53:55,306 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 16:53:55,306 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 16:53:55,313 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:53:55,562 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:53:59,000 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22007
[2024-11-08 16:53:59,001 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 16:53:59,002 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 16:53:59,003 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 16:53:59,003 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 16:53:59,035 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:53:59,036 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:54:00,456 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:54:01,038 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-08 16:54:01,053 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:54:01,053 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:54:02,503 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:54:02,816 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:54:02,956 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:54:03,050 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:54:03,769 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 16:54:03,773 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 16:54:03,774 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 16:54:03,774 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-08 16:54:03,778 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (1/1) ...
[2024-11-08 16:54:03,787 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:54:03,803 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:54:03,823 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 16:54:03,831 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 16:54:03,862 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 16:54:03,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 16:54:03,863 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 16:54:03,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 16:54:05,297 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-08 16:54:05,301 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 16:55:09,649 INFO  L?                        ?]: Removed 11973 outVars from TransFormulas that were not future-live.
[2024-11-08 16:55:09,649 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-08 16:55:09,760 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 16:55:09,762 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-08 16:55:09,763 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:55:09 BoogieIcfgContainer
[2024-11-08 16:55:09,765 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 16:55:09,768 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 16:55:09,768 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 16:55:09,773 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-08 16:55:09,773 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:53:52" (1/3) ...
[2024-11-08 16:55:09,774 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76acf717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:55:09, skipping insertion in model container
[2024-11-08 16:55:09,775 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:55" (2/3) ...
[2024-11-08 16:55:09,775 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76acf717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:55:09, skipping insertion in model container
[2024-11-08 16:55:09,776 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:55:09" (3/3) ...
[2024-11-08 16:55:09,778 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.reader_writer.3.prop1-func-interl.c
[2024-11-08 16:55:09,803 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 16:55:09,804 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 16:55:10,041 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 16:55:10,049 INFO  L333      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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@403c5096, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 16:55:10,050 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 16:55:10,083 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 8119 states, 8117 states have (on average 1.4999384008870271) internal successors, (12175), 8118 states have internal predecessors, (12175), 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)
[2024-11-08 16:55:10,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 248
[2024-11-08 16:55:10,114 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 16:55:10,115 INFO  L215           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]
[2024-11-08 16:55:10,117 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:55:10,126 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:55:10,127 INFO  L85        PathProgramCache]: Analyzing trace with hash 1690923601, now seen corresponding path program 1 times
[2024-11-08 16:55:10,140 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:55:10,141 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595123174]
[2024-11-08 16:55:10,142 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:55:10,143 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:55:10,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:55:12,340 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:55:12,344 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:55:12,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595123174]
[2024-11-08 16:55:12,345 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595123174] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:55:12,346 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:55:12,346 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:55:12,348 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626334286]
[2024-11-08 16:55:12,350 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:55:12,357 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:55:12,358 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:55:12,391 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:55:12,392 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:55:12,419 INFO  L87              Difference]: Start difference. First operand  has 8119 states, 8117 states have (on average 1.4999384008870271) internal successors, (12175), 8118 states have internal predecessors, (12175), 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 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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)
[2024-11-08 16:55:12,962 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:55:12,962 INFO  L93              Difference]: Finished difference Result 15986 states and 23976 transitions.
[2024-11-08 16:55:12,964 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-08 16:55:12,965 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 247
[2024-11-08 16:55:12,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:55:13,024 INFO  L225             Difference]: With dead ends: 15986
[2024-11-08 16:55:13,024 INFO  L226             Difference]: Without dead ends: 8117
[2024-11-08 16:55:13,043 INFO  L431           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
[2024-11-08 16:55:13,049 INFO  L432           NwaCegarLoop]: 12167 mSDtfsCounter, 0 mSDsluCounter, 24328 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36495 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 16:55:13,051 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36495 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 16:55:13,089 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8117 states.
[2024-11-08 16:55:13,294 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8117 to 8117.
[2024-11-08 16:55:13,318 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8117 states, 8116 states have (on average 1.4996303597831444) internal successors, (12171), 8116 states have internal predecessors, (12171), 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)
[2024-11-08 16:55:13,351 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8117 states to 8117 states and 12171 transitions.
[2024-11-08 16:55:13,352 INFO  L78                 Accepts]: Start accepts. Automaton has 8117 states and 12171 transitions. Word has length 247
[2024-11-08 16:55:13,353 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:55:13,357 INFO  L471      AbstractCegarLoop]: Abstraction has 8117 states and 12171 transitions.
[2024-11-08 16:55:13,358 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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)
[2024-11-08 16:55:13,359 INFO  L276                IsEmpty]: Start isEmpty. Operand 8117 states and 12171 transitions.
[2024-11-08 16:55:13,368 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 249
[2024-11-08 16:55:13,368 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 16:55:13,369 INFO  L215           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]
[2024-11-08 16:55:13,369 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 16:55:13,369 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:55:13,374 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:55:13,375 INFO  L85        PathProgramCache]: Analyzing trace with hash 880720809, now seen corresponding path program 1 times
[2024-11-08 16:55:13,375 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:55:13,375 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769586110]
[2024-11-08 16:55:13,375 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:55:13,375 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:55:13,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:55:14,297 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:55:14,297 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:55:14,297 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769586110]
[2024-11-08 16:55:14,298 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769586110] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:55:14,298 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:55:14,298 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:55:14,299 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766585578]
[2024-11-08 16:55:14,299 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:55:14,301 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:55:14,301 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:55:14,302 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:55:14,302 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:55:14,303 INFO  L87              Difference]: Start difference. First operand 8117 states and 12171 transitions. Second operand  has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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)
[2024-11-08 16:55:14,702 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:55:14,703 INFO  L93              Difference]: Finished difference Result 15986 states and 23971 transitions.
[2024-11-08 16:55:14,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-08 16:55:14,705 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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 248
[2024-11-08 16:55:14,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:55:14,736 INFO  L225             Difference]: With dead ends: 15986
[2024-11-08 16:55:14,736 INFO  L226             Difference]: Without dead ends: 8119
[2024-11-08 16:55:14,750 INFO  L431           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
[2024-11-08 16:55:14,751 INFO  L432           NwaCegarLoop]: 12167 mSDtfsCounter, 0 mSDsluCounter, 24324 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36491 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:55:14,753 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36491 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:55:14,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8119 states.
[2024-11-08 16:55:14,927 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8119 to 8119.
[2024-11-08 16:55:14,944 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8119 states, 8118 states have (on average 1.4995072677999508) internal successors, (12173), 8118 states have internal predecessors, (12173), 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)
[2024-11-08 16:55:14,975 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8119 states to 8119 states and 12173 transitions.
[2024-11-08 16:55:14,975 INFO  L78                 Accepts]: Start accepts. Automaton has 8119 states and 12173 transitions. Word has length 248
[2024-11-08 16:55:14,982 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:55:14,982 INFO  L471      AbstractCegarLoop]: Abstraction has 8119 states and 12173 transitions.
[2024-11-08 16:55:14,983 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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)
[2024-11-08 16:55:14,983 INFO  L276                IsEmpty]: Start isEmpty. Operand 8119 states and 12173 transitions.
[2024-11-08 16:55:14,989 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 250
[2024-11-08 16:55:14,989 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 16:55:14,990 INFO  L215           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]
[2024-11-08 16:55:14,991 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-08 16:55:14,992 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:55:14,993 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:55:14,995 INFO  L85        PathProgramCache]: Analyzing trace with hash 434576938, now seen corresponding path program 1 times
[2024-11-08 16:55:14,996 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:55:14,996 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976314218]
[2024-11-08 16:55:14,996 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:55:14,997 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:55:15,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:55:15,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:55:15,841 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:55:15,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976314218]
[2024-11-08 16:55:15,843 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976314218] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:55:15,843 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:55:15,844 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:55:15,844 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982542492]
[2024-11-08 16:55:15,844 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:55:15,845 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:55:15,845 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:55:15,846 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:55:15,851 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:55:15,851 INFO  L87              Difference]: Start difference. First operand 8119 states and 12173 transitions. Second operand  has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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)
[2024-11-08 16:55:16,226 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:55:16,226 INFO  L93              Difference]: Finished difference Result 15990 states and 23975 transitions.
[2024-11-08 16:55:16,227 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-08 16:55:16,227 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 249
[2024-11-08 16:55:16,228 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:55:16,253 INFO  L225             Difference]: With dead ends: 15990
[2024-11-08 16:55:16,254 INFO  L226             Difference]: Without dead ends: 8121
[2024-11-08 16:55:16,264 INFO  L431           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
[2024-11-08 16:55:16,265 INFO  L432           NwaCegarLoop]: 12167 mSDtfsCounter, 0 mSDsluCounter, 24318 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36485 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:55:16,266 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36485 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:55:16,281 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8121 states.
[2024-11-08 16:55:16,419 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8121 to 8121.
[2024-11-08 16:55:16,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8121 states, 8120 states have (on average 1.499384236453202) internal successors, (12175), 8120 states have internal predecessors, (12175), 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)
[2024-11-08 16:55:16,462 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8121 states to 8121 states and 12175 transitions.
[2024-11-08 16:55:16,463 INFO  L78                 Accepts]: Start accepts. Automaton has 8121 states and 12175 transitions. Word has length 249
[2024-11-08 16:55:16,464 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:55:16,464 INFO  L471      AbstractCegarLoop]: Abstraction has 8121 states and 12175 transitions.
[2024-11-08 16:55:16,464 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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)
[2024-11-08 16:55:16,465 INFO  L276                IsEmpty]: Start isEmpty. Operand 8121 states and 12175 transitions.
[2024-11-08 16:55:16,469 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 251
[2024-11-08 16:55:16,469 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 16:55:16,470 INFO  L215           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]
[2024-11-08 16:55:16,470 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-08 16:55:16,470 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:55:16,471 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:55:16,471 INFO  L85        PathProgramCache]: Analyzing trace with hash 1495871568, now seen corresponding path program 1 times
[2024-11-08 16:55:16,472 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:55:16,472 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413588121]
[2024-11-08 16:55:16,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:55:16,472 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:55:16,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:55:17,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:55:17,329 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:55:17,329 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413588121]
[2024-11-08 16:55:17,330 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413588121] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:55:17,330 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:55:17,330 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 16:55:17,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644584458]
[2024-11-08 16:55:17,331 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:55:17,331 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 16:55:17,332 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:55:17,333 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 16:55:17,333 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 16:55:17,334 INFO  L87              Difference]: Start difference. First operand 8121 states and 12175 transitions. Second operand  has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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)
[2024-11-08 16:55:17,949 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:55:17,949 INFO  L93              Difference]: Finished difference Result 23225 states and 34822 transitions.
[2024-11-08 16:55:17,949 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-08 16:55:17,950 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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 250
[2024-11-08 16:55:17,950 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:55:17,985 INFO  L225             Difference]: With dead ends: 23225
[2024-11-08 16:55:17,985 INFO  L226             Difference]: Without dead ends: 15354
[2024-11-08 16:55:17,999 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:55:18,000 INFO  L432           NwaCegarLoop]: 12163 mSDtfsCounter, 10981 mSDsluCounter, 36110 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10981 SdHoareTripleChecker+Valid, 48273 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:55:18,001 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10981 Valid, 48273 Invalid, 30 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:55:18,030 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15354 states.
[2024-11-08 16:55:18,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15354 to 8349.
[2024-11-08 16:55:18,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8349 states, 8348 states have (on average 1.4994010541447054) internal successors, (12517), 8348 states have internal predecessors, (12517), 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)
[2024-11-08 16:55:18,274 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8349 states to 8349 states and 12517 transitions.
[2024-11-08 16:55:18,274 INFO  L78                 Accepts]: Start accepts. Automaton has 8349 states and 12517 transitions. Word has length 250
[2024-11-08 16:55:18,275 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:55:18,275 INFO  L471      AbstractCegarLoop]: Abstraction has 8349 states and 12517 transitions.
[2024-11-08 16:55:18,276 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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)
[2024-11-08 16:55:18,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 8349 states and 12517 transitions.
[2024-11-08 16:55:18,790 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4184
[2024-11-08 16:55:18,791 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 16:55:18,793 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2024-11-08 16:55:18,794 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-08 16:55:18,795 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:55:18,795 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:55:18,799 INFO  L85        PathProgramCache]: Analyzing trace with hash -601421946, now seen corresponding path program 1 times
[2024-11-08 16:55:18,799 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:55:18,799 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877081874]
[2024-11-08 16:55:18,802 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:55:18,802 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:55:59,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:56:19,438 INFO  L134       CoverageAnalysis]: Checked inductivity of 120 backedges. 6 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:56:19,440 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:56:19,440 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877081874]
[2024-11-08 16:56:19,440 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877081874] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:56:19,441 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033388230]
[2024-11-08 16:56:19,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:56:19,443 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:56:19,445 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:56:19,448 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:56:19,452 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 16:56:28,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:56:28,706 INFO  L255         TraceCheckSpWp]: Trace formula consists of 16818 conjuncts, 62 conjuncts are in the unsatisfiable core
[2024-11-08 16:56:28,868 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:56:58,129 INFO  L134       CoverageAnalysis]: Checked inductivity of 120 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:56:58,129 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:56:58,130 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033388230] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:56:58,130 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:56:58,132 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28
[2024-11-08 16:56:58,132 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690100960]
[2024-11-08 16:56:58,133 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:56:58,139 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 16:56:58,139 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:56:58,146 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 16:56:58,148 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756
[2024-11-08 16:56:58,150 INFO  L87              Difference]: Start difference. First operand 8349 states and 12517 transitions. Second operand  has 24 states, 24 states have (on average 174.29166666666666) internal successors, (4183), 24 states have internal predecessors, (4183), 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)
[2024-11-08 16:57:03,307 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:57:03,307 INFO  L93              Difference]: Finished difference Result 43063 states and 64576 transitions.
[2024-11-08 16:57:03,307 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. 
[2024-11-08 16:57:03,309 INFO  L78                 Accepts]: Start accepts. Automaton has  has 24 states, 24 states have (on average 174.29166666666666) internal successors, (4183), 24 states have internal predecessors, (4183), 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 4183
[2024-11-08 16:57:03,319 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:57:03,394 INFO  L225             Difference]: With dead ends: 43063
[2024-11-08 16:57:03,394 INFO  L226             Difference]: Without dead ends: 35192
[2024-11-08 16:57:03,411 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4200 GetRequests, 4164 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=1294, Unknown=0, NotChecked=0, Total=1406
[2024-11-08 16:57:03,413 INFO  L432           NwaCegarLoop]: 22973 mSDtfsCounter, 35786 mSDsluCounter, 387188 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35786 SdHoareTripleChecker+Valid, 410161 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:57:03,413 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [35786 Valid, 410161 Invalid, 747 Unknown, 0 Unchecked, 1.2s Time], IncrementalHoareTripleChecker [7 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-08 16:57:03,453 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35192 states.
[2024-11-08 16:57:03,826 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35192 to 13769.
[2024-11-08 16:57:04,051 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13769 states, 13768 states have (on average 1.4996368390470656) internal successors, (20647), 13768 states have internal predecessors, (20647), 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)
[2024-11-08 16:57:04,101 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13769 states to 13769 states and 20647 transitions.
[2024-11-08 16:57:04,102 INFO  L78                 Accepts]: Start accepts. Automaton has 13769 states and 20647 transitions. Word has length 4183
[2024-11-08 16:57:04,110 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:57:04,111 INFO  L471      AbstractCegarLoop]: Abstraction has 13769 states and 20647 transitions.
[2024-11-08 16:57:04,112 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 24 states, 24 states have (on average 174.29166666666666) internal successors, (4183), 24 states have internal predecessors, (4183), 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)
[2024-11-08 16:57:04,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 13769 states and 20647 transitions.
[2024-11-08 16:57:04,285 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4185
[2024-11-08 16:57:04,286 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 16:57:04,289 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2024-11-08 16:57:04,373 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 16:57:04,490 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:57:04,491 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:57:04,491 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:57:04,495 INFO  L85        PathProgramCache]: Analyzing trace with hash 1998326505, now seen corresponding path program 1 times
[2024-11-08 16:57:04,496 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:57:04,496 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433890974]
[2024-11-08 16:57:04,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:57:04,499 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:57:41,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:58:00,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 120 backedges. 6 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:58:00,040 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:58:00,041 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433890974]
[2024-11-08 16:58:00,045 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433890974] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:58:00,050 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981038217]
[2024-11-08 16:58:00,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:58:00,053 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:58:00,056 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:58:00,062 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:58:00,074 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6df46fd-c29c-45d9-aa4b-c4e0cb95c4b4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 16:58:12,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:58:12,918 INFO  L255         TraceCheckSpWp]: Trace formula consists of 16821 conjuncts, 109 conjuncts are in the unsatisfiable core
[2024-11-08 16:58:13,040 INFO  L278         TraceCheckSpWp]: Computing forward predicates...