./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC --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 4ecd26f30dcf2e00e51585057257a3ebe53fdc2d12652276addf710ad43d7dfd
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 23:40:36,632 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-23 23:40:36,738 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-23 23:40:36,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 23:40:36,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 23:40:36,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 23:40:36,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 23:40:36,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 23:40:36,791 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 23:40:36,791 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-23 23:40:36,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 23:40:36,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 23:40:36,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 23:40:36,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-23 23:40:36,792 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-23 23:40:36,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 23:40:36,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-23 23:40:36,793 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-23 23:40:36,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-23 23:40:36,793 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-23 23:40:36,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-23 23:40:36,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-23 23:40:36,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 23:40:36,794 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-23 23:40:36,794 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-23 23:40:36,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-23 23:40:36,795 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 23:40:36,795 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-23 23:40:36,795 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 23:40:36,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:40:36,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:40:36,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:40:36,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:40:36,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 23:40:36,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:40:36,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:40:36,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:40:36,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:40:36,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 23:40:36,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 23:40:36,796 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-23 23:40:36,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-23 23:40:36,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-23 23:40:36,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-23 23:40:36,797 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 23:40:36,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 23:40:36,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 23:40:36,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 23:40:36,798 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_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC
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 -> 4ecd26f30dcf2e00e51585057257a3ebe53fdc2d12652276addf710ad43d7dfd
[2024-11-23 23:40:37,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 23:40:37,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 23:40:37,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 23:40:37,189 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-23 23:40:37,189 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-23 23:40:37,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c
[2024-11-23 23:40:40,482 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/data/bde90f827/5be5bb01b522441bbd2bf47a1be00444/FLAG968bd26b8
[2024-11-23 23:40:40,769 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-23 23:40:40,772 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c
[2024-11-23 23:40:40,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/data/bde90f827/5be5bb01b522441bbd2bf47a1be00444/FLAG968bd26b8
[2024-11-23 23:40:40,804 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/data/bde90f827/5be5bb01b522441bbd2bf47a1be00444
[2024-11-23 23:40:40,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 23:40:40,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 23:40:40,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 23:40:40,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 23:40:40,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 23:40:40,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:40:40" (1/1) ...
[2024-11-23 23:40:40,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e901dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:40, skipping insertion in model container
[2024-11-23 23:40:40,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:40:40" (1/1) ...
[2024-11-23 23:40:40,834 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-23 23:40:41,056 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_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c[588,601]
[2024-11-23 23:40:41,096 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:40:41,108 INFO L200 MainTranslator]: Completed pre-run
[2024-11-23 23:40:41,124 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_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c[588,601]
[2024-11-23 23:40:41,148 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:40:41,171 INFO L204 MainTranslator]: Completed translation
[2024-11-23 23:40:41,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41 WrapperNode
[2024-11-23 23:40:41,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 23:40:41,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 23:40:41,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 23:40:41,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 23:40:41,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,221 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47
[2024-11-23 23:40:41,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 23:40:41,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 23:40:41,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 23:40:41,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 23:40:41,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,254 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].
[2024-11-23 23:40:41,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,264 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 23:40:41,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 23:40:41,279 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 23:40:41,279 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-23 23:40:41,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (1/1) ...
[2024-11-23 23:40:41,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:40:41,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:41,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 23:40:41,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 23:40:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 23:40:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-23 23:40:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 23:40:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 23:40:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-23 23:40:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-23 23:40:41,432 INFO L234 CfgBuilder]: Building ICFG
[2024-11-23 23:40:41,435 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 23:40:41,628 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live.
[2024-11-23 23:40:41,628 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-23 23:40:41,639 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 23:40:41,639 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-23 23:40:41,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:40:41 BoogieIcfgContainer
[2024-11-23 23:40:41,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 23:40:41,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 23:40:41,643 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 23:40:41,649 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-23 23:40:41,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:40:40" (1/3) ...
[2024-11-23 23:40:41,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8b3166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:40:41, skipping insertion in model container
[2024-11-23 23:40:41,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:40:41" (2/3) ...
[2024-11-23 23:40:41,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8b3166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:40:41, skipping insertion in model container
[2024-11-23 23:40:41,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:40:41" (3/3) ...
[2024-11-23 23:40:41,653 INFO L128 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound100.c
[2024-11-23 23:40:41,671 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 23:40:41,673 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cohencu-ll_valuebound100.c that has 2 procedures, 26 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-23 23:40:41,738 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 23:40:41,757 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;@40f4bf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 23:40:41,758 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-23 23:40:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2024-11-23 23:40:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-23 23:40:41,772 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:41,773 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:41,774 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:41,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash 120600286, now seen corresponding path program 1 times
[2024-11-23 23:40:41,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:41,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104648973]
[2024-11-23 23:40:41,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:41,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:40:41,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:41,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104648973]
[2024-11-23 23:40:41,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104648973] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:40:41,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:40:41,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-23 23:40:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690794590]
[2024-11-23 23:40:41,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:40:41,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-23 23:40:41,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:42,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-23 23:40:42,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-23 23:40:42,023 INFO L87 Difference]: Start difference. First operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:40:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:42,055 INFO L93 Difference]: Finished difference Result 49 states and 87 transitions.
[2024-11-23 23:40:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-23 23:40:42,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-23 23:40:42,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:42,066 INFO L225 Difference]: With dead ends: 49
[2024-11-23 23:40:42,066 INFO L226 Difference]: Without dead ends: 22
[2024-11-23 23:40:42,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-23 23:40:42,076 INFO L435 NwaCegarLoop]: 36 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, 36 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
[2024-11-23 23:40:42,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 23:40:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-11-23 23:40:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2024-11-23 23:40:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-23 23:40:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions.
[2024-11-23 23:40:42,130 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 8
[2024-11-23 23:40:42,130 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:42,130 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions.
[2024-11-23 23:40:42,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:40:42,131 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions.
[2024-11-23 23:40:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-23 23:40:42,132 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:42,132 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:42,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-23 23:40:42,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:42,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash 177858588, now seen corresponding path program 1 times
[2024-11-23 23:40:42,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:42,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882936145]
[2024-11-23 23:40:42,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:42,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:40:42,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:42,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882936145]
[2024-11-23 23:40:42,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882936145] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:40:42,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:40:42,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:40:42,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15180006]
[2024-11-23 23:40:42,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:40:42,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:40:42,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:42,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:40:42,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:40:42,452 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:40:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:42,628 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions.
[2024-11-23 23:40:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:40:42,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-23 23:40:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:42,630 INFO L225 Difference]: With dead ends: 28
[2024-11-23 23:40:42,630 INFO L226 Difference]: Without dead ends: 26
[2024-11-23 23:40:42,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:40:42,631 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:40:42,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 83 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:40:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2024-11-23 23:40:42,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2024-11-23 23:40:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-23 23:40:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions.
[2024-11-23 23:40:42,644 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 8
[2024-11-23 23:40:42,644 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:42,644 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions.
[2024-11-23 23:40:42,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:40:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions.
[2024-11-23 23:40:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-23 23:40:42,645 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:42,645 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:42,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-23 23:40:42,646 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:42,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash -718653970, now seen corresponding path program 1 times
[2024-11-23 23:40:42,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:42,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839066416]
[2024-11-23 23:40:42,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:42,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-23 23:40:42,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917243767]
[2024-11-23 23:40:42,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:42,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:42,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:42,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:42,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 23:40:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:42,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:42,751 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:40:42,837 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:40:42,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:42,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839066416]
[2024-11-23 23:40:42,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:40:42,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917243767]
[2024-11-23 23:40:42,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917243767] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:40:42,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:40:42,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:40:42,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847662603]
[2024-11-23 23:40:42,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:40:42,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:40:42,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:42,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:40:42,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:40:42,841 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-23 23:40:42,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:42,955 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions.
[2024-11-23 23:40:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:40:42,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2024-11-23 23:40:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:42,957 INFO L225 Difference]: With dead ends: 44
[2024-11-23 23:40:42,957 INFO L226 Difference]: Without dead ends: 42
[2024-11-23 23:40:42,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:40:42,958 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:40:42,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:40:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2024-11-23 23:40:42,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32.
[2024-11-23 23:40:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-23 23:40:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions.
[2024-11-23 23:40:42,973 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13
[2024-11-23 23:40:42,973 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:42,973 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions.
[2024-11-23 23:40:42,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-23 23:40:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions.
[2024-11-23 23:40:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-23 23:40:42,974 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:42,974 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:42,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-23 23:40:43,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:43,178 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:43,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash -264711396, now seen corresponding path program 1 times
[2024-11-23 23:40:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:43,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114255897]
[2024-11-23 23:40:43,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-23 23:40:43,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202239274]
[2024-11-23 23:40:43,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:43,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:43,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:43,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:43,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-23 23:40:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:43,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:43,276 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-23 23:40:43,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:40:43,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:43,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114255897]
[2024-11-23 23:40:43,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:40:43,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202239274]
[2024-11-23 23:40:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202239274] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:40:43,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:40:43,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:40:43,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117490505]
[2024-11-23 23:40:43,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:40:43,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:40:43,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:43,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:40:43,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:40:43,359 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-23 23:40:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:43,482 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions.
[2024-11-23 23:40:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:40:43,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2024-11-23 23:40:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:43,484 INFO L225 Difference]: With dead ends: 48
[2024-11-23 23:40:43,484 INFO L226 Difference]: Without dead ends: 46
[2024-11-23 23:40:43,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:40:43,485 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:40:43,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 100 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:40:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2024-11-23 23:40:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42.
[2024-11-23 23:40:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17)
[2024-11-23 23:40:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions.
[2024-11-23 23:40:43,512 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 18
[2024-11-23 23:40:43,512 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:43,512 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions.
[2024-11-23 23:40:43,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-23 23:40:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions.
[2024-11-23 23:40:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-23 23:40:43,513 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:43,513 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:43,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-23 23:40:43,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:43,719 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:43,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash -983541138, now seen corresponding path program 1 times
[2024-11-23 23:40:43,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:43,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259168854]
[2024-11-23 23:40:43,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:43,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-23 23:40:43,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131332834]
[2024-11-23 23:40:43,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:43,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:43,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:43,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:43,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-23 23:40:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:43,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:43,808 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-23 23:40:43,901 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:40:43,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259168854]
[2024-11-23 23:40:43,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:40:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131332834]
[2024-11-23 23:40:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131332834] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:40:43,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:40:43,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:40:43,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367412636]
[2024-11-23 23:40:43,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:40:43,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:40:43,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:43,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:40:43,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:40:43,905 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-23 23:40:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:44,042 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions.
[2024-11-23 23:40:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:40:44,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23
[2024-11-23 23:40:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:44,044 INFO L225 Difference]: With dead ends: 56
[2024-11-23 23:40:44,044 INFO L226 Difference]: Without dead ends: 44
[2024-11-23 23:40:44,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:40:44,045 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:40:44,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 92 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:40:44,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2024-11-23 23:40:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2024-11-23 23:40:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-23 23:40:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions.
[2024-11-23 23:40:44,059 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 23
[2024-11-23 23:40:44,060 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:44,060 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions.
[2024-11-23 23:40:44,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-23 23:40:44,060 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions.
[2024-11-23 23:40:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2024-11-23 23:40:44,061 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:44,061 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:44,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-23 23:40:44,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:44,265 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:44,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1309815239, now seen corresponding path program 1 times
[2024-11-23 23:40:44,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:44,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019450686]
[2024-11-23 23:40:44,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:44,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-23 23:40:44,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266991568]
[2024-11-23 23:40:44,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:44,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:44,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:44,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:44,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-23 23:40:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:44,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:44,421 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-11-23 23:40:44,652 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:40:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-11-23 23:40:44,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:44,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019450686]
[2024-11-23 23:40:44,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:40:44,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266991568]
[2024-11-23 23:40:44,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266991568] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:40:44,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:40:44,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2024-11-23 23:40:44,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264856141]
[2024-11-23 23:40:44,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:40:44,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-23 23:40:44,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:44,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-23 23:40:44,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2024-11-23 23:40:44,908 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 13 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12)
[2024-11-23 23:40:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:45,259 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions.
[2024-11-23 23:40:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 23:40:45,260 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 39
[2024-11-23 23:40:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:45,261 INFO L225 Difference]: With dead ends: 66
[2024-11-23 23:40:45,261 INFO L226 Difference]: Without dead ends: 64
[2024-11-23 23:40:45,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240
[2024-11-23 23:40:45,263 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:40:45,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:40:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2024-11-23 23:40:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52.
[2024-11-23 23:40:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-23 23:40:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions.
[2024-11-23 23:40:45,291 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 39
[2024-11-23 23:40:45,291 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:45,292 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions.
[2024-11-23 23:40:45,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12)
[2024-11-23 23:40:45,292 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions.
[2024-11-23 23:40:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-23 23:40:45,293 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:45,295 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:45,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-23 23:40:45,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-11-23 23:40:45,499 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:45,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1978642865, now seen corresponding path program 2 times
[2024-11-23 23:40:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:45,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130423521]
[2024-11-23 23:40:45,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 23:40:45,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:45,534 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 23:40:45,535 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-23 23:40:45,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900944418]
[2024-11-23 23:40:45,536 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 23:40:45,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:45,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:45,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:45,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-23 23:40:45,601 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 23:40:45,601 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 23:40:45,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:45,622 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2024-11-23 23:40:45,837 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:40:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2024-11-23 23:40:46,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:46,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130423521]
[2024-11-23 23:40:46,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:40:46,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900944418]
[2024-11-23 23:40:46,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900944418] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:40:46,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:40:46,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14
[2024-11-23 23:40:46,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583210612]
[2024-11-23 23:40:46,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:40:46,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-23 23:40:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:46,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-23 23:40:46,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2024-11-23 23:40:46,122 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 14 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14)
[2024-11-23 23:40:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:46,574 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions.
[2024-11-23 23:40:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-23 23:40:46,575 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 44
[2024-11-23 23:40:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:46,578 INFO L225 Difference]: With dead ends: 79
[2024-11-23 23:40:46,578 INFO L226 Difference]: Without dead ends: 74
[2024-11-23 23:40:46,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306
[2024-11-23 23:40:46,582 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:40:46,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 133 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:40:46,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2024-11-23 23:40:46,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73.
[2024-11-23 23:40:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 40 states have internal predecessors, (41), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2024-11-23 23:40:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions.
[2024-11-23 23:40:46,629 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 44
[2024-11-23 23:40:46,629 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:46,629 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions.
[2024-11-23 23:40:46,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14)
[2024-11-23 23:40:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions.
[2024-11-23 23:40:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2024-11-23 23:40:46,635 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:46,635 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:46,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-23 23:40:46,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-11-23 23:40:46,836 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:46,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash 541997392, now seen corresponding path program 1 times
[2024-11-23 23:40:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:46,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323766394]
[2024-11-23 23:40:46,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-23 23:40:46,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096307589]
[2024-11-23 23:40:46,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:46,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:46,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:46,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:46,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-23 23:40:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:46,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:46,984 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2024-11-23 23:40:47,198 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:40:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2024-11-23 23:40:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323766394]
[2024-11-23 23:40:47,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:40:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096307589]
[2024-11-23 23:40:47,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096307589] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:40:47,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:40:47,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-23 23:40:47,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505176345]
[2024-11-23 23:40:47,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:40:47,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-23 23:40:47,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:47,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-23 23:40:47,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2024-11-23 23:40:47,448 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22)
[2024-11-23 23:40:47,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:47,809 INFO L93 Difference]: Finished difference Result 99 states and 121 transitions.
[2024-11-23 23:40:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 23:40:47,810 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 65
[2024-11-23 23:40:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:47,812 INFO L225 Difference]: With dead ends: 99
[2024-11-23 23:40:47,812 INFO L226 Difference]: Without dead ends: 97
[2024-11-23 23:40:47,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2024-11-23 23:40:47,813 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:40:47,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 192 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:40:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2024-11-23 23:40:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93.
[2024-11-23 23:40:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 51 states have internal predecessors, (52), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29)
[2024-11-23 23:40:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions.
[2024-11-23 23:40:47,863 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 65
[2024-11-23 23:40:47,863 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:47,864 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions.
[2024-11-23 23:40:47,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22)
[2024-11-23 23:40:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions.
[2024-11-23 23:40:47,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2024-11-23 23:40:47,867 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:47,867 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:47,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-23 23:40:48,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:48,067 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:48,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:48,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1041558598, now seen corresponding path program 1 times
[2024-11-23 23:40:48,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:48,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477128650]
[2024-11-23 23:40:48,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:48,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-23 23:40:48,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843097407]
[2024-11-23 23:40:48,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:48,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:48,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:48,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:48,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-23 23:40:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:48,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:48,176 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-23 23:40:48,393 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:40:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-23 23:40:48,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:48,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477128650]
[2024-11-23 23:40:48,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:40:48,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843097407]
[2024-11-23 23:40:48,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843097407] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:40:48,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:40:48,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-23 23:40:48,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845973827]
[2024-11-23 23:40:48,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:40:48,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-23 23:40:48,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:48,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-23 23:40:48,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2024-11-23 23:40:48,619 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24)
[2024-11-23 23:40:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:49,159 INFO L93 Difference]: Finished difference Result 119 states and 150 transitions.
[2024-11-23 23:40:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-23 23:40:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 70
[2024-11-23 23:40:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:49,162 INFO L225 Difference]: With dead ends: 119
[2024-11-23 23:40:49,164 INFO L226 Difference]: Without dead ends: 110
[2024-11-23 23:40:49,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272
[2024-11-23 23:40:49,165 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:40:49,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 164 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:40:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2024-11-23 23:40:49,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103.
[2024-11-23 23:40:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 55 states have internal predecessors, (56), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35)
[2024-11-23 23:40:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions.
[2024-11-23 23:40:49,228 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 70
[2024-11-23 23:40:49,229 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:49,229 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions.
[2024-11-23 23:40:49,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24)
[2024-11-23 23:40:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions.
[2024-11-23 23:40:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-23 23:40:49,233 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:40:49,233 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:40:49,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-11-23 23:40:49,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:49,434 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:49,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1836523580, now seen corresponding path program 3 times
[2024-11-23 23:40:49,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:49,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345602100]
[2024-11-23 23:40:49,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 23:40:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:49,540 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s)
[2024-11-23 23:40:49,540 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-23 23:40:49,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392209118]
[2024-11-23 23:40:49,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 23:40:49,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:49,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:49,550 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:49,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-23 23:40:49,634 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-11-23 23:40:49,634 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 23:40:49,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:49,645 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 116 proven. 9 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked.
[2024-11-23 23:40:57,906 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:41:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 116 proven. 9 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked.
[2024-11-23 23:41:16,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:41:16,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345602100]
[2024-11-23 23:41:16,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:41:16,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392209118]
[2024-11-23 23:41:16,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392209118] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:41:16,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:41:16,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15
[2024-11-23 23:41:16,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845852311]
[2024-11-23 23:41:16,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:41:16,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-23 23:41:16,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:41:16,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-23 23:41:16,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210
[2024-11-23 23:41:16,505 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand has 15 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13)
[2024-11-23 23:41:18,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:41:21,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:41:25,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:41:29,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:41:33,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:41:37,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:41:41,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:41:43,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:41:44,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:41:48,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:00,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:02,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:07,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:11,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:15,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:19,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:23,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:24,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:28,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:30,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:34,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:42:34,759 INFO L93 Difference]: Finished difference Result 112 states and 136 transitions.
[2024-11-23 23:42:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-23 23:42:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 75
[2024-11-23 23:42:34,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:42:34,761 INFO L225 Difference]: With dead ends: 112
[2024-11-23 23:42:34,761 INFO L226 Difference]: Without dead ends: 106
[2024-11-23 23:42:34,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=75, Invalid=264, Unknown=3, NotChecked=0, Total=342
[2024-11-23 23:42:34,762 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 64 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:42:34,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 143 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 125 Invalid, 12 Unknown, 0 Unchecked, 70.3s Time]
[2024-11-23 23:42:34,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2024-11-23 23:42:34,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105.
[2024-11-23 23:42:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 58 states have internal predecessors, (59), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33)
[2024-11-23 23:42:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions.
[2024-11-23 23:42:34,835 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 75
[2024-11-23 23:42:34,835 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:42:34,835 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions.
[2024-11-23 23:42:34,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13)
[2024-11-23 23:42:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions.
[2024-11-23 23:42:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2024-11-23 23:42:34,840 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:42:34,840 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:42:34,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-23 23:42:35,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-23 23:42:35,041 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:42:35,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:42:35,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1571120549, now seen corresponding path program 1 times
[2024-11-23 23:42:35,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:42:35,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161970814]
[2024-11-23 23:42:35,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:42:35,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:42:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-23 23:42:35,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177628387]
[2024-11-23 23:42:35,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:42:35,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:42:35,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:42:35,115 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:42:35,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-23 23:42:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:42:35,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 35 conjuncts are in the unsatisfiable core
[2024-11-23 23:42:35,197 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:42:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 35 proven. 70 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked.
[2024-11-23 23:42:35,509 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:42:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 35 proven. 70 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked.
[2024-11-23 23:42:40,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:42:40,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161970814]
[2024-11-23 23:42:40,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:42:40,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177628387]
[2024-11-23 23:42:40,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177628387] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:42:40,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:42:40,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15
[2024-11-23 23:42:40,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120643654]
[2024-11-23 23:42:40,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:42:40,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-23 23:42:40,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:42:40,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-23 23:42:40,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210
[2024-11-23 23:42:40,838 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 6 states have call predecessors, (36), 7 states have call successors, (36)
[2024-11-23 23:42:45,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:50,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-23 23:42:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:42:50,155 INFO L93 Difference]: Finished difference Result 121 states and 140 transitions.
[2024-11-23 23:42:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-23 23:42:50,156 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 6 states have call predecessors, (36), 7 states have call successors, (36) Word has length 101
[2024-11-23 23:42:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:42:50,157 INFO L225 Difference]: With dead ends: 121
[2024-11-23 23:42:50,157 INFO L226 Difference]: Without dead ends: 101
[2024-11-23 23:42:50,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=62, Invalid=209, Unknown=1, NotChecked=0, Total=272
[2024-11-23 23:42:50,158 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 55 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:42:50,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 162 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 205 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time]
[2024-11-23 23:42:50,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2024-11-23 23:42:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2024-11-23 23:42:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 57 states have internal predecessors, (58), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2024-11-23 23:42:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions.
[2024-11-23 23:42:50,217 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 101
[2024-11-23 23:42:50,218 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:42:50,218 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions.
[2024-11-23 23:42:50,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 6 states have call predecessors, (36), 7 states have call successors, (36)
[2024-11-23 23:42:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions.
[2024-11-23 23:42:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118
[2024-11-23 23:42:50,220 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:42:50,220 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:42:50,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-23 23:42:50,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:42:50,424 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:42:50,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:42:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash -33836250, now seen corresponding path program 2 times
[2024-11-23 23:42:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:42:50,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218886747]
[2024-11-23 23:42:50,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 23:42:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:42:50,464 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 23:42:50,466 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-23 23:42:50,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009120561]
[2024-11-23 23:42:50,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 23:42:50,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:42:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:42:50,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:42:50,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-23 23:42:50,551 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 23:42:50,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 23:42:50,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-11-23 23:42:50,561 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:42:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 86 proven. 52 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked.
[2024-11-23 23:42:50,799 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:42:50,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:42:50,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218886747]
[2024-11-23 23:42:50,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:42:50,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009120561]
[2024-11-23 23:42:50,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009120561] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 23:42:50,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-23 23:42:50,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2024-11-23 23:42:50,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369679119]
[2024-11-23 23:42:50,858 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:42:50,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-23 23:42:50,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:42:50,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-23 23:42:50,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156
[2024-11-23 23:42:50,860 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21)
[2024-11-23 23:42:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:42:51,178 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions.
[2024-11-23 23:42:51,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-23 23:42:51,179 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 117
[2024-11-23 23:42:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:42:51,180 INFO L225 Difference]: With dead ends: 111
[2024-11-23 23:42:51,181 INFO L226 Difference]: Without dead ends: 103
[2024-11-23 23:42:51,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210
[2024-11-23 23:42:51,181 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:42:51,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 205 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:42:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2024-11-23 23:42:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103.
[2024-11-23 23:42:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2024-11-23 23:42:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions.
[2024-11-23 23:42:51,230 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 117
[2024-11-23 23:42:51,230 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:42:51,231 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions.
[2024-11-23 23:42:51,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21)
[2024-11-23 23:42:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions.
[2024-11-23 23:42:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2024-11-23 23:42:51,232 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:42:51,233 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 26, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:42:51,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-11-23 23:42:51,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:42:51,433 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:42:51,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:42:51,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1790702479, now seen corresponding path program 3 times
[2024-11-23 23:42:51,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:42:51,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739527198]
[2024-11-23 23:42:51,434 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 23:42:51,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:42:51,570 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s)
[2024-11-23 23:42:51,570 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-23 23:42:51,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586371983]
[2024-11-23 23:42:51,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 23:42:51,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:42:51,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:42:51,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:42:51,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-23 23:42:51,636 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-11-23 23:42:51,636 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 23:42:51,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-23 23:42:51,640 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:42:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 135 proven. 16 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked.
[2024-11-23 23:42:51,747 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:42:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 135 proven. 16 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked.
[2024-11-23 23:42:51,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:42:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739527198]
[2024-11-23 23:42:51,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:42:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586371983]
[2024-11-23 23:42:51,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586371983] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:42:51,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:42:51,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12
[2024-11-23 23:42:51,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704907730]
[2024-11-23 23:42:51,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:42:51,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-23 23:42:51,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:42:51,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-23 23:42:51,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2024-11-23 23:42:51,957 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16)
[2024-11-23 23:42:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:42:52,174 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions.
[2024-11-23 23:42:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 23:42:52,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 143
[2024-11-23 23:42:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:42:52,176 INFO L225 Difference]: With dead ends: 109
[2024-11-23 23:42:52,177 INFO L226 Difference]: Without dead ends: 105
[2024-11-23 23:42:52,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 272 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182
[2024-11-23 23:42:52,177 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:42:52,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 94 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:42:52,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-11-23 23:42:52,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105.
[2024-11-23 23:42:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 28 states have call successors, (28), 17 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2024-11-23 23:42:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions.
[2024-11-23 23:42:52,226 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 143
[2024-11-23 23:42:52,229 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:42:52,229 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions.
[2024-11-23 23:42:52,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16)
[2024-11-23 23:42:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions.
[2024-11-23 23:42:52,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2024-11-23 23:42:52,232 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:42:52,232 INFO L218 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:42:52,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2024-11-23 23:42:52,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-11-23 23:42:52,436 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:42:52,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:42:52,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1693519161, now seen corresponding path program 2 times
[2024-11-23 23:42:52,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:42:52,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543562955]
[2024-11-23 23:42:52,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 23:42:52,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:42:52,545 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 23:42:52,545 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-23 23:42:52,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604951828]
[2024-11-23 23:42:52,554 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 23:42:52,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:42:52,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:42:52,562 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:42:52,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-23 23:42:52,707 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 23:42:52,707 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 23:42:52,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 43 conjuncts are in the unsatisfiable core
[2024-11-23 23:42:52,713 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:42:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 113 proven. 79 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked.
[2024-11-23 23:42:53,085 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:42:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 113 proven. 43 refuted. 0 times theorem prover too weak. 1362 trivial. 0 not checked.
[2024-11-23 23:42:54,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:42:54,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543562955]
[2024-11-23 23:42:54,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-23 23:42:54,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604951828]
[2024-11-23 23:42:54,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604951828] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:42:54,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:42:54,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18
[2024-11-23 23:42:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884220919]
[2024-11-23 23:42:54,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:42:54,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-23 23:42:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:42:54,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-23 23:42:54,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306
[2024-11-23 23:42:54,893 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 18 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 10 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39)
[2024-11-23 23:42:55,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:42:55,538 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions.
[2024-11-23 23:42:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-11-23 23:42:55,539 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 10 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) Word has length 148
[2024-11-23 23:42:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:42:55,539 INFO L225 Difference]: With dead ends: 131
[2024-11-23 23:42:55,539 INFO L226 Difference]: Without dead ends: 0
[2024-11-23 23:42:55,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 275 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650
[2024-11-23 23:42:55,541 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-23 23:42:55,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 301 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-23 23:42:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-23 23:42:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-23 23:42:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:42:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-23 23:42:55,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 148
[2024-11-23 23:42:55,542 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:42:55,542 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-23 23:42:55,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 10 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39)
[2024-11-23 23:42:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-23 23:42:55,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-23 23:42:55,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-23 23:42:55,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-23 23:42:55,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-11-23 23:42:55,749 INFO L422 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:42:55,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-23 23:43:11,690 WARN L286 SmtUtils]: Spent 15.51s on a formula simplification. DAG size of input: 83 DAG size of output: 28 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:43:48,987 WARN L286 SmtUtils]: Spent 37.29s on a formula simplification. DAG size of input: 135 DAG size of output: 56 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:44:07,663 WARN L286 SmtUtils]: Spent 18.65s on a formula simplification. DAG size of input: 146 DAG size of output: 36 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:44:30,724 WARN L286 SmtUtils]: Spent 23.06s on a formula simplification. DAG size of input: 140 DAG size of output: 36 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:44:39,272 WARN L286 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 123 DAG size of output: 60 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:44:55,008 WARN L286 SmtUtils]: Spent 15.72s on a formula simplification. DAG size of input: 83 DAG size of output: 28 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:45:37,570 WARN L286 SmtUtils]: Spent 42.56s on a formula simplification. DAG size of input: 135 DAG size of output: 60 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:46:16,459 WARN L286 SmtUtils]: Spent 38.89s on a formula simplification. DAG size of input: 146 DAG size of output: 59 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:47:34,618 WARN L286 SmtUtils]: Spent 1.30m on a formula simplification. DAG size of input: 138 DAG size of output: 56 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:48:03,578 WARN L286 SmtUtils]: Spent 28.96s on a formula simplification. DAG size of input: 146 DAG size of output: 36 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:48:17,494 WARN L286 SmtUtils]: Spent 13.91s on a formula simplification. DAG size of input: 140 DAG size of output: 36 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 23:48:17,498 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-23 23:48:17,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:48:17 BoogieIcfgContainer
[2024-11-23 23:48:17,514 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-23 23:48:17,515 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-23 23:48:17,515 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-23 23:48:17,515 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-23 23:48:17,515 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:40:41" (3/4) ...
[2024-11-23 23:48:17,517 INFO L146 WitnessPrinter]: Generating witness for correct program
[2024-11-23 23:48:17,521 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2024-11-23 23:48:17,525 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges
[2024-11-23 23:48:17,525 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-23 23:48:17,525 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-23 23:48:17,525 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-23 23:48:17,620 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/witness.graphml
[2024-11-23 23:48:17,620 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/witness.yml
[2024-11-23 23:48:17,621 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-23 23:48:17,622 INFO L158 Benchmark]: Toolchain (without parser) took 456813.66ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 91.9MB in the beginning and 120.2MB in the end (delta: -28.3MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB.
[2024-11-23 23:48:17,622 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 83.9MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:48:17,622 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.18ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 80.5MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 23:48:17,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.79ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 79.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 23:48:17,623 INFO L158 Benchmark]: Boogie Preprocessor took 54.86ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 77.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:48:17,623 INFO L158 Benchmark]: RCFGBuilder took 361.27ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 66.8MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 23:48:17,623 INFO L158 Benchmark]: TraceAbstraction took 455870.76ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 66.0MB in the beginning and 125.5MB in the end (delta: -59.5MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB.
[2024-11-23 23:48:17,624 INFO L158 Benchmark]: Witness Printer took 106.04ms. Allocated memory is still 192.9MB. Free memory was 125.5MB in the beginning and 120.2MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 23:48:17,626 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.47ms. Allocated memory is still 83.9MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 364.18ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 80.5MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 46.79ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 79.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 54.86ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 77.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 361.27ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 66.8MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 455870.76ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 66.0MB in the beginning and 125.5MB in the end (delta: -59.5MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB.
* Witness Printer took 106.04ms. Allocated memory is still 192.9MB. Free memory was 125.5MB in the beginning and 120.2MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 17]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 134.0s, OverallIterations: 14, TraceHistogramMax: 28, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 91.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 81.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 1931 SdHoareTripleChecker+Invalid, 81.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1554 mSDsCounter, 354 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1992 IncrementalHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 354 mSolverCounterUnsat, 377 mSDtfsCounter, 1992 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1573 GetRequests, 1413 SyntacticMatches, 5 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 36.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=10, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 39 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 37.9s InterpolantComputationTime, 1728 NumberOfCodeBlocks, 1569 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 1535 ConstructedInterpolants, 0 QuantifiedInterpolants, 5500 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1725 ConjunctsInSsa, 269 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 9839/10276 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 33]: Loop Invariant
Derived loop invariant: (((((((3 * ((__int128) n * n)) + 7) + ((__int128) 9 * n)) == ((__int128) y + z)) && (y == ((((__int128) 3 * n) + (3 * ((__int128) n * n))) + 1))) && ((n < (a + 1)) || (((((__int128) 2 * y) + (6 * a)) + 10) == (((__int128) a * z) + ((__int128) 2 * z))))) && ((((((__int128) 3 * n) + (3 * ((__int128) n * n))) + (((__int128) n * n) * n)) + 1) == ((__int128) x + y)))
RESULT: Ultimate proved your program to be correct!
[2024-11-23 23:48:17,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43c4ad8-2b8e-4d44-af81-aae1fbbe6529/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE