./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1 --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 32bit --witnessprinter.graph.data.programhash 0fae542ffc508d581529777e32a74e7eca7b7550b33272b19a75a08e2a9e3ba4
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 11:34:17,678 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-12-02 11:34:17,732 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-12-02 11:34:17,737 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 11:34:17,737 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 11:34:17,758 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 11:34:17,759 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 11:34:17,759 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 11:34:17,759 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 11:34:17,759 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-12-02 11:34:17,760 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 11:34:17,760 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 11:34:17,760 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 11:34:17,760 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-12-02 11:34:17,760 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-12-02 11:34:17,760 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 11:34:17,760 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-12-02 11:34:17,760 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 11:34:17,761 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-12-02 11:34:17,761 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 11:34:17,762 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 11:34:17,762 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 11:34:17,762 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-12-02 11:34:17,763 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 11:34:17,763 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-12-02 11:34:17,763 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 11:34:17,763 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 11:34:17,763 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 11:34:17,763 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 11:34:17,763 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 11:34:17,763 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1
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 -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fae542ffc508d581529777e32a74e7eca7b7550b33272b19a75a08e2a9e3ba4
[2024-12-02 11:34:17,994 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 11:34:18,002 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 11:34:18,004 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 11:34:18,005 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-12-02 11:34:18,006 INFO  L274        PluginConnector]: CDTParser initialized
[2024-12-02 11:34:18,007 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i
[2024-12-02 11:34:20,673 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/data/f3075a750/14a307a88db245acaf20da4933b288d8/FLAGb9ec242b3
[2024-12-02 11:34:20,915 INFO  L384              CDTParser]: Found 1 translation units.
[2024-12-02 11:34:20,915 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i
[2024-12-02 11:34:20,927 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/data/f3075a750/14a307a88db245acaf20da4933b288d8/FLAGb9ec242b3
[2024-12-02 11:34:21,229 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/data/f3075a750/14a307a88db245acaf20da4933b288d8
[2024-12-02 11:34:21,231 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 11:34:21,233 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 11:34:21,234 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 11:34:21,234 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 11:34:21,237 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 11:34:21,238 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,238 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a73db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21, skipping insertion in model container
[2024-12-02 11:34:21,238 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,262 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-12-02 11:34:21,401 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_1c5539cd-0f14-4796-a5a3-e9d593c23962/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i[916,929]
[2024-12-02 11:34:21,520 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-12-02 11:34:21,533 INFO  L200         MainTranslator]: Completed pre-run
[2024-12-02 11:34:21,541 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_1c5539cd-0f14-4796-a5a3-e9d593c23962/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i[916,929]
[2024-12-02 11:34:21,603 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-12-02 11:34:21,623 INFO  L204         MainTranslator]: Completed translation
[2024-12-02 11:34:21,623 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21 WrapperNode
[2024-12-02 11:34:21,624 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 11:34:21,624 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 11:34:21,625 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 11:34:21,625 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 11:34:21,632 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,648 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,697 INFO  L138                Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 597
[2024-12-02 11:34:21,697 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 11:34:21,697 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 11:34:21,698 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 11:34:21,698 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 11:34:21,708 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,708 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,715 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,739 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].
[2024-12-02 11:34:21,739 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,740 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,755 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,757 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,763 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,768 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,771 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,777 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 11:34:21,778 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 11:34:21,778 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 11:34:21,778 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-12-02 11:34:21,779 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (1/1) ...
[2024-12-02 11:34:21,784 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 11:34:21,793 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 11:34:21,805 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 11:34:21,810 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 11:34:21,831 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 11:34:21,831 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-12-02 11:34:21,831 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-12-02 11:34:21,831 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 11:34:21,831 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 11:34:21,831 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 11:34:21,944 INFO  L234             CfgBuilder]: Building ICFG
[2024-12-02 11:34:21,946 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 11:34:22,832 INFO  L?                        ?]: Removed 20 outVars from TransFormulas that were not future-live.
[2024-12-02 11:34:22,832 INFO  L283             CfgBuilder]: Performing block encoding
[2024-12-02 11:34:22,848 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 11:34:22,848 INFO  L312             CfgBuilder]: Removed 2 assume(true) statements.
[2024-12-02 11:34:22,849 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:34:22 BoogieIcfgContainer
[2024-12-02 11:34:22,849 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 11:34:22,851 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 11:34:22,851 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 11:34:22,856 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-12-02 11:34:22,856 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:34:21" (1/3) ...
[2024-12-02 11:34:22,857 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5076284c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:34:22, skipping insertion in model container
[2024-12-02 11:34:22,857 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:21" (2/3) ...
[2024-12-02 11:34:22,857 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5076284c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:34:22, skipping insertion in model container
[2024-12-02 11:34:22,857 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:34:22" (3/3) ...
[2024-12-02 11:34:22,858 INFO  L128   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-33.i
[2024-12-02 11:34:22,871 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 11:34:22,873 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-33.i that has 2 procedures, 257 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-12-02 11:34:22,951 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 11:34:22,964 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;@5540f5ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 11:34:22,964 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 11:34:22,969 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 257 states, 168 states have (on average 1.5357142857142858) internal successors, (258), 169 states have internal predecessors, (258), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86)
[2024-12-02 11:34:22,994 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 534
[2024-12-02 11:34:22,995 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 11:34:22,996 INFO  L218           NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 11:34:22,996 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 11:34:23,001 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 11:34:23,002 INFO  L85        PathProgramCache]: Analyzing trace with hash -1349807650, now seen corresponding path program 1 times
[2024-12-02 11:34:23,009 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 11:34:23,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951104910]
[2024-12-02 11:34:23,010 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 11:34:23,010 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 11:34:23,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 11:34:23,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked.
[2024-12-02 11:34:23,522 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 11:34:23,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951104910]
[2024-12-02 11:34:23,522 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951104910] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 11:34:23,523 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163600800]
[2024-12-02 11:34:23,523 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 11:34:23,523 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 11:34:23,523 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 11:34:23,527 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 11:34:23,529 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 11:34:23,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 11:34:23,888 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-12-02 11:34:23,904 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 11:34:23,956 INFO  L134       CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked.
[2024-12-02 11:34:23,956 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 11:34:23,956 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [163600800] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 11:34:23,956 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 11:34:23,957 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-12-02 11:34:23,958 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980658855]
[2024-12-02 11:34:23,958 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 11:34:23,962 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-12-02 11:34:23,962 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 11:34:23,975 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-12-02 11:34:23,975 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 11:34:23,977 INFO  L87              Difference]: Start difference. First operand  has 257 states, 168 states have (on average 1.5357142857142858) internal successors, (258), 169 states have internal predecessors, (258), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand  has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86)
[2024-12-02 11:34:24,025 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 11:34:24,025 INFO  L93              Difference]: Finished difference Result 507 states and 940 transitions.
[2024-12-02 11:34:24,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-12-02 11:34:24,027 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 533
[2024-12-02 11:34:24,027 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 11:34:24,033 INFO  L225             Difference]: With dead ends: 507
[2024-12-02 11:34:24,033 INFO  L226             Difference]: Without dead ends: 253
[2024-12-02 11:34:24,037 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 11:34:24,040 INFO  L435           NwaCegarLoop]: 421 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 11:34:24,040 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 11:34:24,059 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 253 states.
[2024-12-02 11:34:24,096 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253.
[2024-12-02 11:34:24,098 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 253 states, 165 states have (on average 1.509090909090909) internal successors, (249), 165 states have internal predecessors, (249), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86)
[2024-12-02 11:34:24,103 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 421 transitions.
[2024-12-02 11:34:24,105 INFO  L78                 Accepts]: Start accepts. Automaton has 253 states and 421 transitions. Word has length 533
[2024-12-02 11:34:24,106 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 11:34:24,106 INFO  L471      AbstractCegarLoop]: Abstraction has 253 states and 421 transitions.
[2024-12-02 11:34:24,106 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86)
[2024-12-02 11:34:24,106 INFO  L276                IsEmpty]: Start isEmpty. Operand 253 states and 421 transitions.
[2024-12-02 11:34:24,119 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 534
[2024-12-02 11:34:24,120 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 11:34:24,120 INFO  L218           NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 11:34:24,132 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 11:34:24,320 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-12-02 11:34:24,321 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 11:34:24,321 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 11:34:24,322 INFO  L85        PathProgramCache]: Analyzing trace with hash -350335398, now seen corresponding path program 1 times
[2024-12-02 11:34:24,322 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 11:34:24,322 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868646275]
[2024-12-02 11:34:24,322 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 11:34:24,322 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 11:34:24,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 11:34:26,216 INFO  L134       CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked.
[2024-12-02 11:34:26,216 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 11:34:26,216 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868646275]
[2024-12-02 11:34:26,216 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868646275] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 11:34:26,216 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 11:34:26,216 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 11:34:26,217 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934263126]
[2024-12-02 11:34:26,217 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 11:34:26,218 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 11:34:26,218 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 11:34:26,219 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 11:34:26,219 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 11:34:26,220 INFO  L87              Difference]: Start difference. First operand 253 states and 421 transitions. Second operand  has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86)
[2024-12-02 11:34:26,476 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 11:34:26,476 INFO  L93              Difference]: Finished difference Result 753 states and 1257 transitions.
[2024-12-02 11:34:26,476 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-12-02 11:34:26,476 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 533
[2024-12-02 11:34:26,478 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 11:34:26,483 INFO  L225             Difference]: With dead ends: 753
[2024-12-02 11:34:26,483 INFO  L226             Difference]: Without dead ends: 503
[2024-12-02 11:34:26,485 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 11:34:26,485 INFO  L435           NwaCegarLoop]: 414 mSDtfsCounter, 415 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 11:34:26,486 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 819 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 11:34:26,487 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 503 states.
[2024-12-02 11:34:26,569 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501.
[2024-12-02 11:34:26,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 501 states, 326 states have (on average 1.5122699386503067) internal successors, (493), 326 states have internal predecessors, (493), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172)
[2024-12-02 11:34:26,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 837 transitions.
[2024-12-02 11:34:26,576 INFO  L78                 Accepts]: Start accepts. Automaton has 501 states and 837 transitions. Word has length 533
[2024-12-02 11:34:26,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 11:34:26,578 INFO  L471      AbstractCegarLoop]: Abstraction has 501 states and 837 transitions.
[2024-12-02 11:34:26,579 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86)
[2024-12-02 11:34:26,579 INFO  L276                IsEmpty]: Start isEmpty. Operand 501 states and 837 transitions.
[2024-12-02 11:34:26,583 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 535
[2024-12-02 11:34:26,583 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 11:34:26,584 INFO  L218           NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 11:34:26,584 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-12-02 11:34:26,584 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 11:34:26,585 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 11:34:26,585 INFO  L85        PathProgramCache]: Analyzing trace with hash -1242166131, now seen corresponding path program 1 times
[2024-12-02 11:34:26,585 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 11:34:26,585 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156293454]
[2024-12-02 11:34:26,585 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 11:34:26,586 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 11:34:26,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 11:34:27,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked.
[2024-12-02 11:34:27,415 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 11:34:27,415 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156293454]
[2024-12-02 11:34:27,415 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156293454] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 11:34:27,415 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 11:34:27,415 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 11:34:27,415 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510815025]
[2024-12-02 11:34:27,415 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 11:34:27,416 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 11:34:27,416 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 11:34:27,417 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 11:34:27,417 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 11:34:27,418 INFO  L87              Difference]: Start difference. First operand 501 states and 837 transitions. Second operand  has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86)
[2024-12-02 11:34:28,010 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 11:34:28,010 INFO  L93              Difference]: Finished difference Result 1351 states and 2264 transitions.
[2024-12-02 11:34:28,011 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 11:34:28,011 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 534
[2024-12-02 11:34:28,012 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 11:34:28,017 INFO  L225             Difference]: With dead ends: 1351
[2024-12-02 11:34:28,017 INFO  L226             Difference]: Without dead ends: 853
[2024-12-02 11:34:28,019 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-12-02 11:34:28,020 INFO  L435           NwaCegarLoop]: 400 mSDtfsCounter, 390 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-12-02 11:34:28,020 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1197 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-12-02 11:34:28,022 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 853 states.
[2024-12-02 11:34:28,113 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 827.
[2024-12-02 11:34:28,114 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 827 states, 565 states have (on average 1.5486725663716814) internal successors, (875), 565 states have internal predecessors, (875), 258 states have call successors, (258), 3 states have call predecessors, (258), 3 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258)
[2024-12-02 11:34:28,118 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1391 transitions.
[2024-12-02 11:34:28,120 INFO  L78                 Accepts]: Start accepts. Automaton has 827 states and 1391 transitions. Word has length 534
[2024-12-02 11:34:28,121 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 11:34:28,121 INFO  L471      AbstractCegarLoop]: Abstraction has 827 states and 1391 transitions.
[2024-12-02 11:34:28,121 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86)
[2024-12-02 11:34:28,121 INFO  L276                IsEmpty]: Start isEmpty. Operand 827 states and 1391 transitions.
[2024-12-02 11:34:28,125 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 536
[2024-12-02 11:34:28,125 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 11:34:28,125 INFO  L218           NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 11:34:28,126 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-12-02 11:34:28,126 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 11:34:28,126 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 11:34:28,127 INFO  L85        PathProgramCache]: Analyzing trace with hash -928965691, now seen corresponding path program 1 times
[2024-12-02 11:34:28,127 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 11:34:28,127 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527433911]
[2024-12-02 11:34:28,127 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 11:34:28,127 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 11:34:28,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 11:34:28,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked.
[2024-12-02 11:34:28,497 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 11:34:28,497 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527433911]
[2024-12-02 11:34:28,497 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527433911] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 11:34:28,497 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 11:34:28,498 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 11:34:28,498 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153656169]
[2024-12-02 11:34:28,498 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 11:34:28,498 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 11:34:28,498 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 11:34:28,499 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 11:34:28,499 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 11:34:28,499 INFO  L87              Difference]: Start difference. First operand 827 states and 1391 transitions. Second operand  has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86)
[2024-12-02 11:34:28,992 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 11:34:28,992 INFO  L93              Difference]: Finished difference Result 1369 states and 2286 transitions.
[2024-12-02 11:34:28,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 11:34:28,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 535
[2024-12-02 11:34:28,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 11:34:28,999 INFO  L225             Difference]: With dead ends: 1369
[2024-12-02 11:34:28,999 INFO  L226             Difference]: Without dead ends: 845
[2024-12-02 11:34:29,001 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-12-02 11:34:29,002 INFO  L435           NwaCegarLoop]: 403 mSDtfsCounter, 380 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 11:34:29,002 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1205 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 11:34:29,004 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 845 states.
[2024-12-02 11:34:29,099 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 829.
[2024-12-02 11:34:29,101 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 829 states, 567 states have (on average 1.5432098765432098) internal successors, (875), 567 states have internal predecessors, (875), 258 states have call successors, (258), 3 states have call predecessors, (258), 3 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258)
[2024-12-02 11:34:29,107 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1391 transitions.
[2024-12-02 11:34:29,109 INFO  L78                 Accepts]: Start accepts. Automaton has 829 states and 1391 transitions. Word has length 535
[2024-12-02 11:34:29,109 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 11:34:29,110 INFO  L471      AbstractCegarLoop]: Abstraction has 829 states and 1391 transitions.
[2024-12-02 11:34:29,110 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86)
[2024-12-02 11:34:29,110 INFO  L276                IsEmpty]: Start isEmpty. Operand 829 states and 1391 transitions.
[2024-12-02 11:34:29,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 537
[2024-12-02 11:34:29,114 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 11:34:29,115 INFO  L218           NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 11:34:29,115 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-12-02 11:34:29,115 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 11:34:29,115 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 11:34:29,115 INFO  L85        PathProgramCache]: Analyzing trace with hash -1326362518, now seen corresponding path program 1 times
[2024-12-02 11:34:29,116 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 11:34:29,116 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864319758]
[2024-12-02 11:34:29,116 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 11:34:29,116 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 11:34:29,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 11:34:30,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 14620 backedges. 102 proven. 153 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked.
[2024-12-02 11:34:30,592 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 11:34:30,592 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864319758]
[2024-12-02 11:34:30,592 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864319758] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 11:34:30,592 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126969045]
[2024-12-02 11:34:30,592 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 11:34:30,592 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 11:34:30,593 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 11:34:30,594 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 11:34:30,595 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 11:34:30,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 11:34:30,906 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-12-02 11:34:30,918 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 11:34:31,759 INFO  L134       CoverageAnalysis]: Checked inductivity of 14620 backedges. 8652 proven. 210 refuted. 0 times theorem prover too weak. 5758 trivial. 0 not checked.
[2024-12-02 11:34:31,759 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 11:34:54,069 INFO  L134       CoverageAnalysis]: Checked inductivity of 14620 backedges. 294 proven. 213 refuted. 0 times theorem prover too weak. 14113 trivial. 0 not checked.
[2024-12-02 11:34:54,070 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126969045] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 11:34:54,070 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 11:34:54,070 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19
[2024-12-02 11:34:54,070 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579354130]
[2024-12-02 11:34:54,070 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 11:34:54,072 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 11:34:54,072 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 11:34:54,073 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 11:34:54,074 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342
[2024-12-02 11:34:54,074 INFO  L87              Difference]: Start difference. First operand 829 states and 1391 transitions. Second operand  has 19 states, 19 states have (on average 13.368421052631579) internal successors, (254), 19 states have internal predecessors, (254), 6 states have call successors, (213), 3 states have call predecessors, (213), 7 states have return successors, (214), 6 states have call predecessors, (214), 6 states have call successors, (214)
[2024-12-02 11:35:04,948 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 11:35:04,948 INFO  L93              Difference]: Finished difference Result 3738 states and 6230 transitions.
[2024-12-02 11:35:04,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. 
[2024-12-02 11:35:04,949 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 19 states have (on average 13.368421052631579) internal successors, (254), 19 states have internal predecessors, (254), 6 states have call successors, (213), 3 states have call predecessors, (213), 7 states have return successors, (214), 6 states have call predecessors, (214), 6 states have call successors, (214) Word has length 536
[2024-12-02 11:35:04,949 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 11:35:04,967 INFO  L225             Difference]: With dead ends: 3738
[2024-12-02 11:35:04,967 INFO  L226             Difference]: Without dead ends: 3076
[2024-12-02 11:35:04,972 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 1069 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=842, Invalid=2350, Unknown=0, NotChecked=0, Total=3192
[2024-12-02 11:35:04,972 INFO  L435           NwaCegarLoop]: 316 mSDtfsCounter, 4758 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 1822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 4462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1822 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2024-12-02 11:35:04,973 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 2707 Invalid, 4462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1822 Valid, 2640 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2024-12-02 11:35:04,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3076 states.
[2024-12-02 11:35:05,247 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3020.
[2024-12-02 11:35:05,254 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3020 states, 2378 states have (on average 1.586627417998318) internal successors, (3773), 2384 states have internal predecessors, (3773), 614 states have call successors, (614), 27 states have call predecessors, (614), 27 states have return successors, (614), 608 states have call predecessors, (614), 614 states have call successors, (614)
[2024-12-02 11:35:05,272 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 5001 transitions.
[2024-12-02 11:35:05,275 INFO  L78                 Accepts]: Start accepts. Automaton has 3020 states and 5001 transitions. Word has length 536
[2024-12-02 11:35:05,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 11:35:05,276 INFO  L471      AbstractCegarLoop]: Abstraction has 3020 states and 5001 transitions.
[2024-12-02 11:35:05,277 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 13.368421052631579) internal successors, (254), 19 states have internal predecessors, (254), 6 states have call successors, (213), 3 states have call predecessors, (213), 7 states have return successors, (214), 6 states have call predecessors, (214), 6 states have call successors, (214)
[2024-12-02 11:35:05,277 INFO  L276                IsEmpty]: Start isEmpty. Operand 3020 states and 5001 transitions.
[2024-12-02 11:35:05,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 537
[2024-12-02 11:35:05,284 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 11:35:05,284 INFO  L218           NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 11:35:05,296 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 11:35:05,484 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 11:35:05,485 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 11:35:05,485 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 11:35:05,485 INFO  L85        PathProgramCache]: Analyzing trace with hash -432493782, now seen corresponding path program 1 times
[2024-12-02 11:35:05,485 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 11:35:05,486 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104334878]
[2024-12-02 11:35:05,486 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 11:35:05,486 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 11:35:05,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 11:35:06,369 INFO  L134       CoverageAnalysis]: Checked inductivity of 14620 backedges. 120 proven. 135 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked.
[2024-12-02 11:35:06,370 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 11:35:06,370 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104334878]
[2024-12-02 11:35:06,370 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104334878] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 11:35:06,370 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868761769]
[2024-12-02 11:35:06,370 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 11:35:06,370 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 11:35:06,370 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 11:35:06,372 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 11:35:06,374 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5539cd-0f14-4796-a5a3-e9d593c23962/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 11:35:06,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 11:35:06,647 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 35 conjuncts are in the unsatisfiable core
[2024-12-02 11:35:06,659 INFO  L279         TraceCheckSpWp]: Computing forward predicates...