./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-070.c --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_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-070.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB --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 b124f4fa2472e5467898e0020b8382b91d5239bb08b12140b4820bcea6da62e0
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-28 02:10:24,766 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-28 02:10:24,872 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-28 02:10:24,879 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-28 02:10:24,881 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-28 02:10:24,914 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-28 02:10:24,915 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-28 02:10:24,915 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-28 02:10:24,916 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-28 02:10:24,917 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-28 02:10:24,918 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-28 02:10:24,918 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-28 02:10:24,918 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-28 02:10:24,918 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-28 02:10:24,919 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-28 02:10:24,919 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-28 02:10:24,919 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-28 02:10:24,919 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-28 02:10:24,919 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-28 02:10:24,919 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-28 02:10:24,920 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 02:10:24,920 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:10:24,921 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:10:24,921 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-28 02:10:24,921 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-28 02:10:24,922 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-28 02:10:24,922 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-28 02:10:24,922 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-28 02:10:24,922 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_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB
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 -> b124f4fa2472e5467898e0020b8382b91d5239bb08b12140b4820bcea6da62e0
[2024-11-28 02:10:25,262 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-28 02:10:25,270 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-28 02:10:25,273 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-28 02:10:25,274 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-28 02:10:25,275 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-28 02:10:25,276 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-070.c
[2024-11-28 02:10:28,340 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/data/7019853c6/0f46277da58f4d01b9f980cc679091a6/FLAGb80510d15
[2024-11-28 02:10:28,779 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-28 02:10:28,782 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/sv-benchmarks/c/xcsp/Dubois-070.c
[2024-11-28 02:10:28,802 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/data/7019853c6/0f46277da58f4d01b9f980cc679091a6/FLAGb80510d15
[2024-11-28 02:10:28,827 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/data/7019853c6/0f46277da58f4d01b9f980cc679091a6
[2024-11-28 02:10:28,830 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-28 02:10:28,833 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-28 02:10:28,835 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-28 02:10:28,836 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-28 02:10:28,842 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-28 02:10:28,843 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:10:28" (1/1) ...
[2024-11-28 02:10:28,846 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7763a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:28, skipping insertion in model container
[2024-11-28 02:10:28,847 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:10:28" (1/1) ...
[2024-11-28 02:10:28,911 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-28 02:10:29,606 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_fee188d7-c5f3-4877-94bd-3f2295218ae0/sv-benchmarks/c/xcsp/Dubois-070.c[49920,49933]
[2024-11-28 02:10:29,673 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 02:10:29,687 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-28 02:10:30,039 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_fee188d7-c5f3-4877-94bd-3f2295218ae0/sv-benchmarks/c/xcsp/Dubois-070.c[49920,49933]
[2024-11-28 02:10:30,075 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 02:10:30,090 INFO  L204         MainTranslator]: Completed translation
[2024-11-28 02:10:30,090 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30 WrapperNode
[2024-11-28 02:10:30,091 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-28 02:10:30,092 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-28 02:10:30,092 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-28 02:10:30,092 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-28 02:10:30,099 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:30,206 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:30,978 INFO  L138                Inliner]: procedures = 13, calls = 567, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13946
[2024-11-28 02:10:30,980 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-28 02:10:30,981 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-28 02:10:30,981 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-28 02:10:30,981 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-28 02:10:30,993 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:30,993 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:31,320 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:31,625 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].
[2024-11-28 02:10:31,626 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:31,626 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:32,177 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:32,203 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:32,305 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:32,354 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:32,401 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:32,538 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-28 02:10:32,541 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-28 02:10:32,541 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-28 02:10:32,541 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-28 02:10:32,543 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (1/1) ...
[2024-11-28 02:10:32,554 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:10:32,573 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:10:32,592 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-28 02:10:32,595 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-28 02:10:32,622 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-28 02:10:32,622 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-28 02:10:32,622 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-28 02:10:32,622 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-28 02:10:32,622 INFO  L130     BoogieDeclarations]: Found specification of procedure assume
[2024-11-28 02:10:32,622 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume
[2024-11-28 02:10:33,140 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-28 02:10:33,142 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-28 02:10:55,160 INFO  L?                        ?]: Removed 4835 outVars from TransFormulas that were not future-live.
[2024-11-28 02:10:55,160 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-28 02:10:55,270 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-28 02:10:55,270 INFO  L312             CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-28 02:10:55,271 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:10:55 BoogieIcfgContainer
[2024-11-28 02:10:55,271 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-28 02:10:55,274 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-28 02:10:55,274 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-28 02:10:55,281 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-28 02:10:55,283 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:10:28" (1/3) ...
[2024-11-28 02:10:55,284 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0ff5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:10:55, skipping insertion in model container
[2024-11-28 02:10:55,285 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:10:30" (2/3) ...
[2024-11-28 02:10:55,285 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0ff5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:10:55, skipping insertion in model container
[2024-11-28 02:10:55,285 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:10:55" (3/3) ...
[2024-11-28 02:10:55,287 INFO  L128   eAbstractionObserver]: Analyzing ICFG Dubois-070.c
[2024-11-28 02:10:55,303 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-28 02:10:55,306 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-070.c that has 2 procedures, 5541 locations, 1 initial locations, 0 loop locations, and 1 error locations.
[2024-11-28 02:10:55,518 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-28 02:10:55,531 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;@5ae35b51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-28 02:10:55,531 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-28 02:10:55,551 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5541 states, 4978 states have (on average 1.6191241462434713) internal successors, (8060), 4979 states have internal predecessors, (8060), 560 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560)
[2024-11-28 02:10:55,839 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4694
[2024-11-28 02:10:55,840 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:10:55,842 INFO  L218           NwaCegarLoop]: trace histogram [560, 560, 560, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2024-11-28 02:10:55,842 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:10:55,851 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:10:55,853 INFO  L85        PathProgramCache]: Analyzing trace with hash -267113677, now seen corresponding path program 1 times
[2024-11-28 02:10:55,860 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:10:55,860 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843185682]
[2024-11-28 02:10:55,862 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:10:55,865 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:10:56,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:11:02,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 626080 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 624962 trivial. 0 not checked.
[2024-11-28 02:11:02,670 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:11:02,670 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843185682]
[2024-11-28 02:11:02,671 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843185682] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:11:02,671 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021141654]
[2024-11-28 02:11:02,672 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:11:02,672 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:11:02,672 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:11:02,679 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:11:02,682 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-28 02:11:05,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:11:05,090 INFO  L256         TraceCheckSpWp]: Trace formula consists of 10246 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-28 02:11:05,174 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:11:05,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 626080 backedges. 1118 proven. 0 refuted. 0 times theorem prover too weak. 624962 trivial. 0 not checked.
[2024-11-28 02:11:05,657 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:11:05,657 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021141654] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:11:05,657 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:11:05,658 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-28 02:11:05,661 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017044683]
[2024-11-28 02:11:05,661 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:11:05,676 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-28 02:11:05,676 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:11:05,706 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-28 02:11:05,707 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-28 02:11:05,720 INFO  L87              Difference]: Start difference. First operand  has 5541 states, 4978 states have (on average 1.6191241462434713) internal successors, (8060), 4979 states have internal predecessors, (8060), 560 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) Second operand  has 2 states, 2 states have (on average 949.0) internal successors, (1898), 2 states have internal predecessors, (1898), 2 states have call successors, (560), 2 states have call predecessors, (560), 1 states have return successors, (560), 1 states have call predecessors, (560), 2 states have call successors, (560)
[2024-11-28 02:11:06,122 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:11:06,123 INFO  L93              Difference]: Finished difference Result 11076 states and 18914 transitions.
[2024-11-28 02:11:06,124 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-28 02:11:06,127 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 949.0) internal successors, (1898), 2 states have internal predecessors, (1898), 2 states have call successors, (560), 2 states have call predecessors, (560), 1 states have return successors, (560), 1 states have call predecessors, (560), 2 states have call successors, (560) Word has length 4693
[2024-11-28 02:11:06,128 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:11:06,182 INFO  L225             Difference]: With dead ends: 11076
[2024-11-28 02:11:06,183 INFO  L226             Difference]: Without dead ends: 5538
[2024-11-28 02:11:06,208 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4694 GetRequests, 4694 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-28 02:11:06,212 INFO  L435           NwaCegarLoop]: 9176 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, 9176 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
[2024-11-28 02:11:06,213 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:11:06,241 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5538 states.
[2024-11-28 02:11:06,813 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5538.
[2024-11-28 02:11:06,825 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5538 states, 4976 states have (on average 1.6189710610932475) internal successors, (8056), 4976 states have internal predecessors, (8056), 560 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560)
[2024-11-28 02:11:06,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 9176 transitions.
[2024-11-28 02:11:06,866 INFO  L78                 Accepts]: Start accepts. Automaton has 5538 states and 9176 transitions. Word has length 4693
[2024-11-28 02:11:06,870 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:11:06,870 INFO  L471      AbstractCegarLoop]: Abstraction has 5538 states and 9176 transitions.
[2024-11-28 02:11:06,872 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 949.0) internal successors, (1898), 2 states have internal predecessors, (1898), 2 states have call successors, (560), 2 states have call predecessors, (560), 1 states have return successors, (560), 1 states have call predecessors, (560), 2 states have call successors, (560)
[2024-11-28 02:11:06,876 INFO  L276                IsEmpty]: Start isEmpty. Operand 5538 states and 9176 transitions.
[2024-11-28 02:11:07,116 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4694
[2024-11-28 02:11:07,116 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:11:07,118 INFO  L218           NwaCegarLoop]: trace histogram [560, 560, 560, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:11:07,136 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-28 02:11:07,319 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-11-28 02:11:07,319 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:11:07,321 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:11:07,324 INFO  L85        PathProgramCache]: Analyzing trace with hash -1583309645, now seen corresponding path program 1 times
[2024-11-28 02:11:07,324 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:11:07,325 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041502799]
[2024-11-28 02:11:07,326 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:11:07,326 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:11:07,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:11:18,192 INFO  L134       CoverageAnalysis]: Checked inductivity of 626080 backedges. 1260 proven. 417 refuted. 0 times theorem prover too weak. 624403 trivial. 0 not checked.
[2024-11-28 02:11:18,192 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:11:18,193 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041502799]
[2024-11-28 02:11:18,193 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041502799] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:11:18,194 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275075111]
[2024-11-28 02:11:18,196 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:11:18,196 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:11:18,196 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:11:18,198 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:11:18,202 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-28 02:11:20,552 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:11:20,592 INFO  L256         TraceCheckSpWp]: Trace formula consists of 10246 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 02:11:20,662 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:11:20,915 INFO  L134       CoverageAnalysis]: Checked inductivity of 626080 backedges. 235336 proven. 0 refuted. 0 times theorem prover too weak. 390744 trivial. 0 not checked.
[2024-11-28 02:11:20,915 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:11:20,915 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275075111] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:11:20,915 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:11:20,916 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6
[2024-11-28 02:11:20,916 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055356387]
[2024-11-28 02:11:20,917 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:11:20,923 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 02:11:20,924 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:11:20,927 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 02:11:20,927 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-28 02:11:20,933 INFO  L87              Difference]: Start difference. First operand 5538 states and 9176 transitions. Second operand  has 6 states, 5 states have (on average 380.4) internal successors, (1902), 6 states have internal predecessors, (1902), 3 states have call successors, (560), 2 states have call predecessors, (560), 3 states have return successors, (560), 2 states have call predecessors, (560), 3 states have call successors, (560)
[2024-11-28 02:11:25,094 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:11:25,094 INFO  L93              Difference]: Finished difference Result 10415 states and 17252 transitions.
[2024-11-28 02:11:25,095 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 02:11:25,097 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 380.4) internal successors, (1902), 6 states have internal predecessors, (1902), 3 states have call successors, (560), 2 states have call predecessors, (560), 3 states have return successors, (560), 2 states have call predecessors, (560), 3 states have call successors, (560) Word has length 4693
[2024-11-28 02:11:25,103 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:11:25,130 INFO  L225             Difference]: With dead ends: 10415
[2024-11-28 02:11:25,130 INFO  L226             Difference]: Without dead ends: 5540
[2024-11-28 02:11:25,138 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4698 GetRequests, 4694 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-28 02:11:25,139 INFO  L435           NwaCegarLoop]: 8612 mSDtfsCounter, 1 mSDsluCounter, 33315 mSDsCounter, 0 mSdLazyCounter, 3949 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41927 SdHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2024-11-28 02:11:25,139 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41927 Invalid, 3950 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 3949 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2024-11-28 02:11:25,149 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5540 states.
[2024-11-28 02:11:25,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5540 to 5540.
[2024-11-28 02:11:25,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5540 states, 4978 states have (on average 1.6187223784652471) internal successors, (8058), 4978 states have internal predecessors, (8058), 560 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560)
[2024-11-28 02:11:25,596 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 9178 transitions.
[2024-11-28 02:11:25,600 INFO  L78                 Accepts]: Start accepts. Automaton has 5540 states and 9178 transitions. Word has length 4693
[2024-11-28 02:11:25,610 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:11:25,610 INFO  L471      AbstractCegarLoop]: Abstraction has 5540 states and 9178 transitions.
[2024-11-28 02:11:25,611 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 380.4) internal successors, (1902), 6 states have internal predecessors, (1902), 3 states have call successors, (560), 2 states have call predecessors, (560), 3 states have return successors, (560), 2 states have call predecessors, (560), 3 states have call successors, (560)
[2024-11-28 02:11:25,611 INFO  L276                IsEmpty]: Start isEmpty. Operand 5540 states and 9178 transitions.
[2024-11-28 02:11:25,829 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4695
[2024-11-28 02:11:25,829 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:11:25,831 INFO  L218           NwaCegarLoop]: trace histogram [560, 560, 560, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:11:25,859 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-28 02:11:26,032 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:11:26,032 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:11:26,034 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:11:26,036 INFO  L85        PathProgramCache]: Analyzing trace with hash 1820751127, now seen corresponding path program 1 times
[2024-11-28 02:11:26,037 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:11:26,037 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007952335]
[2024-11-28 02:11:26,038 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:11:26,038 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:11:26,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:11:32,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 626080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 626080 trivial. 0 not checked.
[2024-11-28 02:11:32,715 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:11:32,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007952335]
[2024-11-28 02:11:32,715 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007952335] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:11:32,715 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 02:11:32,716 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-28 02:11:32,716 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415595009]
[2024-11-28 02:11:32,716 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:11:32,721 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-28 02:11:32,725 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:11:32,731 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-28 02:11:32,732 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-28 02:11:32,733 INFO  L87              Difference]: Start difference. First operand 5540 states and 9178 transitions. Second operand  has 5 states, 5 states have (on average 379.4) internal successors, (1897), 5 states have internal predecessors, (1897), 2 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 2 states have call predecessors, (560), 2 states have call successors, (560)
[2024-11-28 02:11:33,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:11:33,115 INFO  L93              Difference]: Finished difference Result 10435 states and 17282 transitions.
[2024-11-28 02:11:33,116 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-28 02:11:33,117 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 379.4) internal successors, (1897), 5 states have internal predecessors, (1897), 2 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 2 states have call predecessors, (560), 2 states have call successors, (560) Word has length 4694
[2024-11-28 02:11:33,122 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:11:33,150 INFO  L225             Difference]: With dead ends: 10435
[2024-11-28 02:11:33,150 INFO  L226             Difference]: Without dead ends: 5549
[2024-11-28 02:11:33,158 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-28 02:11:33,161 INFO  L435           NwaCegarLoop]: 9172 mSDtfsCounter, 10 mSDsluCounter, 27493 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36665 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 02:11:33,162 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 36665 Invalid, 40 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 02:11:33,174 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5549 states.
[2024-11-28 02:11:33,776 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5549 to 5549.
[2024-11-28 02:11:33,785 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5549 states, 4987 states have (on average 1.6184078604371366) internal successors, (8071), 4987 states have internal predecessors, (8071), 560 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560)
[2024-11-28 02:11:33,808 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 9191 transitions.
[2024-11-28 02:11:33,810 INFO  L78                 Accepts]: Start accepts. Automaton has 5549 states and 9191 transitions. Word has length 4694
[2024-11-28 02:11:33,819 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:11:33,820 INFO  L471      AbstractCegarLoop]: Abstraction has 5549 states and 9191 transitions.
[2024-11-28 02:11:33,821 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 379.4) internal successors, (1897), 5 states have internal predecessors, (1897), 2 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 2 states have call predecessors, (560), 2 states have call successors, (560)
[2024-11-28 02:11:33,821 INFO  L276                IsEmpty]: Start isEmpty. Operand 5549 states and 9191 transitions.
[2024-11-28 02:11:33,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4695
[2024-11-28 02:11:33,973 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:11:33,974 INFO  L218           NwaCegarLoop]: trace histogram [560, 560, 560, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:11:33,975 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-28 02:11:33,975 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:11:33,976 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:11:33,979 INFO  L85        PathProgramCache]: Analyzing trace with hash 1473612285, now seen corresponding path program 1 times
[2024-11-28 02:11:33,979 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:11:33,979 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776372095]
[2024-11-28 02:11:33,981 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:11:33,981 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:11:34,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:11:38,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 626080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 626080 trivial. 0 not checked.
[2024-11-28 02:11:38,851 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:11:38,851 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776372095]
[2024-11-28 02:11:38,851 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776372095] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:11:38,852 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 02:11:38,852 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-28 02:11:38,852 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419124782]
[2024-11-28 02:11:38,852 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:11:38,856 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 02:11:38,856 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:11:38,859 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 02:11:38,859 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-28 02:11:38,860 INFO  L87              Difference]: Start difference. First operand 5549 states and 9191 transitions. Second operand  has 3 states, 3 states have (on average 632.3333333333334) internal successors, (1897), 3 states have internal predecessors, (1897), 2 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 2 states have call predecessors, (560), 2 states have call successors, (560)
[2024-11-28 02:11:38,997 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:11:38,997 INFO  L93              Difference]: Finished difference Result 10432 states and 17275 transitions.
[2024-11-28 02:11:38,998 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 02:11:38,999 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 632.3333333333334) internal successors, (1897), 3 states have internal predecessors, (1897), 2 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 2 states have call predecessors, (560), 2 states have call successors, (560) Word has length 4694
[2024-11-28 02:11:39,004 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:11:39,037 INFO  L225             Difference]: With dead ends: 10432
[2024-11-28 02:11:39,037 INFO  L226             Difference]: Without dead ends: 5550
[2024-11-28 02:11:39,046 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-28 02:11:39,047 INFO  L435           NwaCegarLoop]: 9175 mSDtfsCounter, 0 mSDsluCounter, 9166 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18341 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 02:11:39,048 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18341 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:11:39,059 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5550 states.
[2024-11-28 02:11:39,422 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5550.
[2024-11-28 02:11:39,431 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5550 states, 4988 states have (on average 1.618083400160385) internal successors, (8071), 4988 states have internal predecessors, (8071), 560 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560)
[2024-11-28 02:11:39,446 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5550 states to 5550 states and 9191 transitions.
[2024-11-28 02:11:39,450 INFO  L78                 Accepts]: Start accepts. Automaton has 5550 states and 9191 transitions. Word has length 4694
[2024-11-28 02:11:39,454 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:11:39,454 INFO  L471      AbstractCegarLoop]: Abstraction has 5550 states and 9191 transitions.
[2024-11-28 02:11:39,455 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 632.3333333333334) internal successors, (1897), 3 states have internal predecessors, (1897), 2 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 2 states have call predecessors, (560), 2 states have call successors, (560)
[2024-11-28 02:11:39,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 5550 states and 9191 transitions.
[2024-11-28 02:11:39,734 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4696
[2024-11-28 02:11:39,735 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:11:39,737 INFO  L218           NwaCegarLoop]: trace histogram [560, 560, 560, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:11:39,738 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-28 02:11:39,738 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:11:39,740 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:11:39,742 INFO  L85        PathProgramCache]: Analyzing trace with hash -123888179, now seen corresponding path program 1 times
[2024-11-28 02:11:39,742 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:11:39,742 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807019029]
[2024-11-28 02:11:39,743 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:11:39,744 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:11:40,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:11:45,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 626080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 626080 trivial. 0 not checked.
[2024-11-28 02:11:45,182 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:11:45,182 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807019029]
[2024-11-28 02:11:45,182 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807019029] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:11:45,182 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 02:11:45,182 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-28 02:11:45,182 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664658041]
[2024-11-28 02:11:45,183 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:11:45,186 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 02:11:45,186 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:11:45,189 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 02:11:45,190 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-28 02:11:45,191 INFO  L87              Difference]: Start difference. First operand 5550 states and 9191 transitions. Second operand  has 4 states, 4 states have (on average 474.5) internal successors, (1898), 4 states have internal predecessors, (1898), 2 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 2 states have call predecessors, (560), 2 states have call successors, (560)
[2024-11-28 02:11:45,368 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:11:45,368 INFO  L93              Difference]: Finished difference Result 10464 states and 17324 transitions.
[2024-11-28 02:11:45,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 02:11:45,370 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 474.5) internal successors, (1898), 4 states have internal predecessors, (1898), 2 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 2 states have call predecessors, (560), 2 states have call successors, (560) Word has length 4695
[2024-11-28 02:11:45,375 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:11:45,417 INFO  L225             Difference]: With dead ends: 10464
[2024-11-28 02:11:45,418 INFO  L226             Difference]: Without dead ends: 5560
[2024-11-28 02:11:45,426 INFO  L434           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
[2024-11-28 02:11:45,427 INFO  L435           NwaCegarLoop]: 9172 mSDtfsCounter, 9 mSDsluCounter, 18331 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 27503 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 02:11:45,427 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 27503 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:11:45,437 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5560 states.
[2024-11-28 02:11:45,800 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5560.
[2024-11-28 02:11:45,809 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5560 states, 4998 states have (on average 1.6178471388555422) internal successors, (8086), 4998 states have internal predecessors, (8086), 560 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560)
[2024-11-28 02:11:45,825 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 9206 transitions.
[2024-11-28 02:11:45,832 INFO  L78                 Accepts]: Start accepts. Automaton has 5560 states and 9206 transitions. Word has length 4695
[2024-11-28 02:11:45,837 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:11:45,837 INFO  L471      AbstractCegarLoop]: Abstraction has 5560 states and 9206 transitions.
[2024-11-28 02:11:45,838 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 474.5) internal successors, (1898), 4 states have internal predecessors, (1898), 2 states have call successors, (560), 1 states have call predecessors, (560), 1 states have return successors, (560), 2 states have call predecessors, (560), 2 states have call successors, (560)
[2024-11-28 02:11:45,839 INFO  L276                IsEmpty]: Start isEmpty. Operand 5560 states and 9206 transitions.
[2024-11-28 02:11:45,989 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4696
[2024-11-28 02:11:45,990 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:11:45,991 INFO  L218           NwaCegarLoop]: trace histogram [560, 560, 560, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:11:45,992 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-28 02:11:45,996 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:11:45,998 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:11:46,000 INFO  L85        PathProgramCache]: Analyzing trace with hash -1139033767, now seen corresponding path program 1 times
[2024-11-28 02:11:46,000 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:11:46,000 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047334615]
[2024-11-28 02:11:46,002 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:11:46,002 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:11:46,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:11:52,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 626080 backedges. 1263 proven. 414 refuted. 0 times theorem prover too weak. 624403 trivial. 0 not checked.
[2024-11-28 02:11:52,669 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:11:52,669 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047334615]
[2024-11-28 02:11:52,670 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047334615] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:11:52,670 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107131117]
[2024-11-28 02:11:52,671 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:11:52,671 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:11:52,671 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:11:52,675 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:11:52,679 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-28 02:11:55,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:11:55,316 INFO  L256         TraceCheckSpWp]: Trace formula consists of 10252 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 02:11:55,405 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:12:03,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 626080 backedges. 2236 proven. 0 refuted. 0 times theorem prover too weak. 623844 trivial. 0 not checked.
[2024-11-28 02:12:03,933 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:12:03,933 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107131117] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:12:03,933 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:12:03,935 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 02:12:03,935 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281441268]
[2024-11-28 02:12:03,935 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:12:03,938 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 02:12:03,939 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:12:03,942 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 02:12:03,942 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:12:03,944 INFO  L87              Difference]: Start difference. First operand 5560 states and 9206 transitions. Second operand  has 3 states, 3 states have (on average 633.6666666666666) internal successors, (1901), 3 states have internal predecessors, (1901), 3 states have call successors, (560), 2 states have call predecessors, (560), 2 states have return successors, (560), 3 states have call predecessors, (560), 3 states have call successors, (560)
[2024-11-28 02:12:04,233 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:12:04,233 INFO  L93              Difference]: Finished difference Result 15297 states and 25333 transitions.
[2024-11-28 02:12:04,234 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 02:12:04,235 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 633.6666666666666) internal successors, (1901), 3 states have internal predecessors, (1901), 3 states have call successors, (560), 2 states have call predecessors, (560), 2 states have return successors, (560), 3 states have call predecessors, (560), 3 states have call successors, (560) Word has length 4695
[2024-11-28 02:12:04,242 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:12:04,279 INFO  L225             Difference]: With dead ends: 15297
[2024-11-28 02:12:04,279 INFO  L226             Difference]: Without dead ends: 10410
[2024-11-28 02:12:04,288 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4700 GetRequests, 4695 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:12:04,289 INFO  L435           NwaCegarLoop]: 13461 mSDtfsCounter, 6100 mSDsluCounter, 9200 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6100 SdHoareTripleChecker+Valid, 22661 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 02:12:04,289 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [6100 Valid, 22661 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 02:12:04,304 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10410 states.
[2024-11-28 02:12:04,909 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10410 to 10410.
[2024-11-28 02:12:04,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10410 states, 9709 states have (on average 1.6314759501493459) internal successors, (15840), 9709 states have internal predecessors, (15840), 699 states have call successors, (699), 1 states have call predecessors, (699), 1 states have return successors, (699), 699 states have call predecessors, (699), 699 states have call successors, (699)
[2024-11-28 02:12:04,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10410 states to 10410 states and 17238 transitions.
[2024-11-28 02:12:04,953 INFO  L78                 Accepts]: Start accepts. Automaton has 10410 states and 17238 transitions. Word has length 4695
[2024-11-28 02:12:04,959 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:12:04,959 INFO  L471      AbstractCegarLoop]: Abstraction has 10410 states and 17238 transitions.
[2024-11-28 02:12:04,960 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 633.6666666666666) internal successors, (1901), 3 states have internal predecessors, (1901), 3 states have call successors, (560), 2 states have call predecessors, (560), 2 states have return successors, (560), 3 states have call predecessors, (560), 3 states have call successors, (560)
[2024-11-28 02:12:04,960 INFO  L276                IsEmpty]: Start isEmpty. Operand 10410 states and 17238 transitions.
[2024-11-28 02:12:05,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4696
[2024-11-28 02:12:05,142 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:12:05,144 INFO  L218           NwaCegarLoop]: trace histogram [560, 560, 560, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2024-11-28 02:12:05,174 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-28 02:12:05,344 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fee188d7-c5f3-4877-94bd-3f2295218ae0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-11-28 02:12:05,345 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:12:05,346 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:12:05,349 INFO  L85        PathProgramCache]: Analyzing trace with hash -890515533, now seen corresponding path program 1 times
[2024-11-28 02:12:05,350 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:12:05,350 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662385481]
[2024-11-28 02:12:05,351 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:12:05,351 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:12:05,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat