./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c --full-output --architecture 64bit
--------------------------------------------------------------------------------
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_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/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_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/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 64bit --witnessprinter.graph.data.programhash 1a93b4c325da61bdb0bcf5f7bfce47877e5238073f7401e4883b579f193ca117
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 23:50:18,111 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-23 23:50:18,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-23 23:50:18,260 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 23:50:18,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 23:50:18,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 23:50:18,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 23:50:18,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 23:50:18,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 23:50:18,310 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-23 23:50:18,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 23:50:18,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 23:50:18,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 23:50:18,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-23 23:50:18,311 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-23 23:50:18,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 23:50:18,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-23 23:50:18,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-23 23:50:18,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-23 23:50:18,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-23 23:50:18,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 23:50:18,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-23 23:50:18,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-23 23:50:18,315 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 23:50:18,315 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-23 23:50:18,315 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 23:50:18,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:50:18,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:50:18,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:50:18,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:50:18,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 23:50:18,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:50:18,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:50:18,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:50:18,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:50:18,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 23:50:18,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 23:50:18,317 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-23 23:50:18,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-23 23:50:18,317 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-23 23:50:18,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-23 23:50:18,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 23:50:18,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 23:50:18,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 23:50:18,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 23:50:18,317 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_0275a4d5-1398-4507-b5d1-22d6ba28b327/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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a93b4c325da61bdb0bcf5f7bfce47877e5238073f7401e4883b579f193ca117
[2024-11-23 23:50:18,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 23:50:18,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 23:50:18,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 23:50:18,716 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-23 23:50:18,716 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-23 23:50:18,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c
[2024-11-23 23:50:22,501 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data/0adc2bf9e/13479c183efd4eae9349e6f68c604e30/FLAG75af84f42
[2024-11-23 23:50:22,907 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-23 23:50:22,908 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c
[2024-11-23 23:50:22,926 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data/0adc2bf9e/13479c183efd4eae9349e6f68c604e30/FLAG75af84f42
[2024-11-23 23:50:22,956 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data/0adc2bf9e/13479c183efd4eae9349e6f68c604e30
[2024-11-23 23:50:22,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 23:50:22,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 23:50:22,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 23:50:22,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 23:50:22,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 23:50:22,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:50:22" (1/1) ...
[2024-11-23 23:50:22,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8fe8ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:22, skipping insertion in model container
[2024-11-23 23:50:22,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:50:22" (1/1) ...
[2024-11-23 23:50:23,008 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-23 23:50:23,236 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_0275a4d5-1398-4507-b5d1-22d6ba28b327/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1248,1261]
[2024-11-23 23:50:23,339 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:50:23,357 INFO L200 MainTranslator]: Completed pre-run
[2024-11-23 23:50:23,374 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_0275a4d5-1398-4507-b5d1-22d6ba28b327/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1248,1261]
[2024-11-23 23:50:23,442 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:50:23,464 INFO L204 MainTranslator]: Completed translation
[2024-11-23 23:50:23,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23 WrapperNode
[2024-11-23 23:50:23,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 23:50:23,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 23:50:23,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 23:50:23,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 23:50:23,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,556 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 187
[2024-11-23 23:50:23,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 23:50:23,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 23:50:23,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 23:50:23,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 23:50:23,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,575 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,598 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 23:50:23,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,615 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 23:50:23,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 23:50:23,658 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 23:50:23,658 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-23 23:50:23,660 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (1/1) ...
[2024-11-23 23:50:23,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:50:23,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:50:23,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 23:50:23,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 23:50:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 23:50:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-23 23:50:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 23:50:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 23:50:23,869 INFO L234 CfgBuilder]: Building ICFG
[2024-11-23 23:50:23,872 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 23:50:24,528 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live.
[2024-11-23 23:50:24,529 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-23 23:50:24,542 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 23:50:24,542 INFO L312 CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-23 23:50:24,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:50:24 BoogieIcfgContainer
[2024-11-23 23:50:24,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 23:50:24,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 23:50:24,547 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 23:50:24,554 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-23 23:50:24,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:50:22" (1/3) ...
[2024-11-23 23:50:24,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293e8783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:50:24, skipping insertion in model container
[2024-11-23 23:50:24,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:23" (2/3) ...
[2024-11-23 23:50:24,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293e8783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:50:24, skipping insertion in model container
[2024-11-23 23:50:24,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:50:24" (3/3) ...
[2024-11-23 23:50:24,558 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.paper_v3.c
[2024-11-23 23:50:24,581 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 23:50:24,583 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.paper_v3.c that has 1 procedures, 50 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-23 23:50:24,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 23:50:24,680 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;@538703ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 23:50:24,680 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-23 23:50:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 49 states have internal predecessors, (71), 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 23:50:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-23 23:50:24,694 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:24,695 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:24,695 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:24,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:24,702 INFO L85 PathProgramCache]: Analyzing trace with hash -829897697, now seen corresponding path program 1 times
[2024-11-23 23:50:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:24,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201843370]
[2024-11-23 23:50:24,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:24,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:25,450 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 23:50:25,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201843370]
[2024-11-23 23:50:25,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201843370] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:25,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:25,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:50:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770208452]
[2024-11-23 23:50:25,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:25,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:50:25,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:25,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:50:25,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:50:25,484 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 23:50:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:25,539 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions.
[2024-11-23 23:50:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 23:50:25,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2024-11-23 23:50:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:25,552 INFO L225 Difference]: With dead ends: 89
[2024-11-23 23:50:25,553 INFO L226 Difference]: Without dead ends: 49
[2024-11-23 23:50:25,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:50:25,560 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:25,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 23:50:25,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2024-11-23 23:50:25,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2024-11-23 23:50:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 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 23:50:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions.
[2024-11-23 23:50:25,604 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 13
[2024-11-23 23:50:25,604 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:25,604 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 69 transitions.
[2024-11-23 23:50:25,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 23:50:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions.
[2024-11-23 23:50:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-23 23:50:25,606 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:25,606 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:25,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-23 23:50:25,607 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:25,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:25,607 INFO L85 PathProgramCache]: Analyzing trace with hash 44670374, now seen corresponding path program 1 times
[2024-11-23 23:50:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:25,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014785018]
[2024-11-23 23:50:25,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:25,815 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 23:50:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014785018]
[2024-11-23 23:50:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014785018] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:25,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:25,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:50:25,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060590607]
[2024-11-23 23:50:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:25,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:50:25,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:25,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:50:25,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:50:25,819 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 23:50:25,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:25,866 INFO L93 Difference]: Finished difference Result 90 states and 127 transitions.
[2024-11-23 23:50:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 23:50:25,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-11-23 23:50:25,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:25,868 INFO L225 Difference]: With dead ends: 90
[2024-11-23 23:50:25,869 INFO L226 Difference]: Without dead ends: 51
[2024-11-23 23:50:25,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:50:25,870 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:25,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 23:50:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2024-11-23 23:50:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2024-11-23 23:50:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.42) internal successors, (71), 50 states have internal predecessors, (71), 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 23:50:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions.
[2024-11-23 23:50:25,882 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 14
[2024-11-23 23:50:25,883 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:25,883 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions.
[2024-11-23 23:50:25,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 23:50:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions.
[2024-11-23 23:50:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2024-11-23 23:50:25,884 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:25,884 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:25,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-23 23:50:25,887 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:25,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash 286815704, now seen corresponding path program 1 times
[2024-11-23 23:50:25,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:25,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932243224]
[2024-11-23 23:50:25,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:26,440 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 23:50:26,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:26,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932243224]
[2024-11-23 23:50:26,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932243224] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:26,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:26,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-23 23:50:26,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111086123]
[2024-11-23 23:50:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:26,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:50:26,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:26,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:50:26,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:50:26,444 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 23:50:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:26,644 INFO L93 Difference]: Finished difference Result 119 states and 166 transitions.
[2024-11-23 23:50:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:50:26,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2024-11-23 23:50:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:26,647 INFO L225 Difference]: With dead ends: 119
[2024-11-23 23:50:26,649 INFO L226 Difference]: Without dead ends: 78
[2024-11-23 23:50:26,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:50:26,651 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 44 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:26,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 275 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:50:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2024-11-23 23:50:26,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 53.
[2024-11-23 23:50:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 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 23:50:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions.
[2024-11-23 23:50:26,666 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 15
[2024-11-23 23:50:26,667 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:26,667 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions.
[2024-11-23 23:50:26,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 23:50:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions.
[2024-11-23 23:50:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2024-11-23 23:50:26,669 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:26,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:26,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-23 23:50:26,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:26,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:26,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1054619020, now seen corresponding path program 1 times
[2024-11-23 23:50:26,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:26,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725848839]
[2024-11-23 23:50:26,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:26,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:27,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725848839]
[2024-11-23 23:50:27,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725848839] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 23:50:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138069848]
[2024-11-23 23:50:27,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:27,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:50:27,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:50:27,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:50:27,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 23:50:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:27,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjuncts are in the unsatisfiable core
[2024-11-23 23:50:27,950 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:50:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:28,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:50:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138069848] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:28,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-23 23:50:28,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13
[2024-11-23 23:50:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332018462]
[2024-11-23 23:50:28,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:28,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-23 23:50:28,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:28,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-23 23:50:28,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2024-11-23 23:50:28,435 INFO L87 Difference]: Start difference. First operand 53 states and 73 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 23:50:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:28,781 INFO L93 Difference]: Finished difference Result 122 states and 170 transitions.
[2024-11-23 23:50:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-23 23:50:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2024-11-23 23:50:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:28,785 INFO L225 Difference]: With dead ends: 122
[2024-11-23 23:50:28,785 INFO L226 Difference]: Without dead ends: 81
[2024-11-23 23:50:28,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240
[2024-11-23 23:50:28,787 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 43 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:28,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 234 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:50:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2024-11-23 23:50:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 63.
[2024-11-23 23:50:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 62 states have internal predecessors, (84), 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 23:50:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions.
[2024-11-23 23:50:28,796 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 34
[2024-11-23 23:50:28,796 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:28,796 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions.
[2024-11-23 23:50:28,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 23:50:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions.
[2024-11-23 23:50:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-11-23 23:50:28,798 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:28,798 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:28,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-23 23:50:29,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:50:29,002 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:29,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1315987221, now seen corresponding path program 1 times
[2024-11-23 23:50:29,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:29,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155238484]
[2024-11-23 23:50:29,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:29,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:29,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:29,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155238484]
[2024-11-23 23:50:29,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155238484] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:29,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:29,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-23 23:50:29,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930140498]
[2024-11-23 23:50:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:29,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-23 23:50:29,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:29,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-23 23:50:29,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:50:29,879 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 23:50:30,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:30,047 INFO L93 Difference]: Finished difference Result 154 states and 212 transitions.
[2024-11-23 23:50:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 23:50:30,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35
[2024-11-23 23:50:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:30,049 INFO L225 Difference]: With dead ends: 154
[2024-11-23 23:50:30,049 INFO L226 Difference]: Without dead ends: 113
[2024-11-23 23:50:30,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2024-11-23 23:50:30,051 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 60 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:30,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 449 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:50:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2024-11-23 23:50:30,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 76.
[2024-11-23 23:50:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.36) internal successors, (102), 75 states have internal predecessors, (102), 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 23:50:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions.
[2024-11-23 23:50:30,060 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 35
[2024-11-23 23:50:30,060 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:30,060 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions.
[2024-11-23 23:50:30,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 23:50:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions.
[2024-11-23 23:50:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-23 23:50:30,062 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:30,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:30,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-23 23:50:30,062 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:30,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:30,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1091437488, now seen corresponding path program 1 times
[2024-11-23 23:50:30,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:30,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623207944]
[2024-11-23 23:50:30,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:30,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:31,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:31,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623207944]
[2024-11-23 23:50:31,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623207944] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:31,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:31,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-23 23:50:31,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672209317]
[2024-11-23 23:50:31,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:31,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:50:31,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:31,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:50:31,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:50:31,031 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 23:50:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:31,252 INFO L93 Difference]: Finished difference Result 163 states and 225 transitions.
[2024-11-23 23:50:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:50:31,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2024-11-23 23:50:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:31,254 INFO L225 Difference]: With dead ends: 163
[2024-11-23 23:50:31,254 INFO L226 Difference]: Without dead ends: 109
[2024-11-23 23:50:31,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:50:31,255 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:31,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 182 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:50:31,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2024-11-23 23:50:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102.
[2024-11-23 23:50:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.386138613861386) internal successors, (140), 101 states have internal predecessors, (140), 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 23:50:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 140 transitions.
[2024-11-23 23:50:31,273 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 140 transitions. Word has length 36
[2024-11-23 23:50:31,273 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:31,273 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 140 transitions.
[2024-11-23 23:50:31,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 23:50:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 140 transitions.
[2024-11-23 23:50:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-23 23:50:31,274 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:31,274 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:31,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-23 23:50:31,278 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:31,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:31,278 INFO L85 PathProgramCache]: Analyzing trace with hash 166812475, now seen corresponding path program 1 times
[2024-11-23 23:50:31,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:31,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953506087]
[2024-11-23 23:50:31,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:31,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:31,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953506087]
[2024-11-23 23:50:31,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953506087] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:31,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:31,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-23 23:50:31,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783913596]
[2024-11-23 23:50:31,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:31,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-23 23:50:31,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:31,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-23 23:50:31,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:50:31,946 INFO L87 Difference]: Start difference. First operand 102 states and 140 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 23:50:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:32,276 INFO L93 Difference]: Finished difference Result 193 states and 268 transitions.
[2024-11-23 23:50:32,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 23:50:32,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2024-11-23 23:50:32,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:32,278 INFO L225 Difference]: With dead ends: 193
[2024-11-23 23:50:32,278 INFO L226 Difference]: Without dead ends: 130
[2024-11-23 23:50:32,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2024-11-23 23:50:32,282 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 64 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:32,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 278 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:50:32,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2024-11-23 23:50:32,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116.
[2024-11-23 23:50:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.373913043478261) internal successors, (158), 115 states have internal predecessors, (158), 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 23:50:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions.
[2024-11-23 23:50:32,307 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 36
[2024-11-23 23:50:32,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:32,308 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions.
[2024-11-23 23:50:32,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 23:50:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions.
[2024-11-23 23:50:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-23 23:50:32,309 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:32,309 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:32,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-23 23:50:32,310 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:32,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash 494893948, now seen corresponding path program 1 times
[2024-11-23 23:50:32,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:32,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151680443]
[2024-11-23 23:50:32,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:32,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:33,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:33,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151680443]
[2024-11-23 23:50:33,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151680443] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:33,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:33,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-23 23:50:33,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415602164]
[2024-11-23 23:50:33,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:33,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-23 23:50:33,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:33,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-23 23:50:33,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:50:33,698 INFO L87 Difference]: Start difference. First operand 116 states and 158 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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 23:50:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:34,146 INFO L93 Difference]: Finished difference Result 196 states and 268 transitions.
[2024-11-23 23:50:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-23 23:50:34,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2024-11-23 23:50:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:34,148 INFO L225 Difference]: With dead ends: 196
[2024-11-23 23:50:34,148 INFO L226 Difference]: Without dead ends: 142
[2024-11-23 23:50:34,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2024-11-23 23:50:34,150 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 73 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:34,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 201 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-23 23:50:34,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2024-11-23 23:50:34,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 120.
[2024-11-23 23:50:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 119 states have internal predecessors, (164), 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 23:50:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 164 transitions.
[2024-11-23 23:50:34,160 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 164 transitions. Word has length 37
[2024-11-23 23:50:34,161 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:34,161 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 164 transitions.
[2024-11-23 23:50:34,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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 23:50:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 164 transitions.
[2024-11-23 23:50:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-23 23:50:34,163 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:34,163 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:34,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-23 23:50:34,164 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:34,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash 32065123, now seen corresponding path program 1 times
[2024-11-23 23:50:34,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:34,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754703746]
[2024-11-23 23:50:34,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:34,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:35,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:35,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754703746]
[2024-11-23 23:50:35,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754703746] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:35,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:35,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-23 23:50:35,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042303532]
[2024-11-23 23:50:35,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:35,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-23 23:50:35,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:35,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-23 23:50:35,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:50:35,078 INFO L87 Difference]: Start difference. First operand 120 states and 164 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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 23:50:35,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:35,470 INFO L93 Difference]: Finished difference Result 191 states and 262 transitions.
[2024-11-23 23:50:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-23 23:50:35,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2024-11-23 23:50:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:35,472 INFO L225 Difference]: With dead ends: 191
[2024-11-23 23:50:35,472 INFO L226 Difference]: Without dead ends: 124
[2024-11-23 23:50:35,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2024-11-23 23:50:35,474 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 51 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:35,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 222 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:50:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2024-11-23 23:50:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123.
[2024-11-23 23:50:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 122 states have internal predecessors, (168), 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 23:50:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 168 transitions.
[2024-11-23 23:50:35,481 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 168 transitions. Word has length 37
[2024-11-23 23:50:35,481 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:35,482 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 168 transitions.
[2024-11-23 23:50:35,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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 23:50:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 168 transitions.
[2024-11-23 23:50:35,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-23 23:50:35,483 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:35,483 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:35,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-23 23:50:35,484 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:35,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash -569459623, now seen corresponding path program 1 times
[2024-11-23 23:50:35,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:35,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747568844]
[2024-11-23 23:50:35,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:35,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:35,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:35,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747568844]
[2024-11-23 23:50:35,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747568844] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:35,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:35,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:50:35,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043703753]
[2024-11-23 23:50:35,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:35,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:50:35,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:35,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:50:35,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:50:35,932 INFO L87 Difference]: Start difference. First operand 123 states and 168 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 23:50:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:36,022 INFO L93 Difference]: Finished difference Result 206 states and 281 transitions.
[2024-11-23 23:50:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:50:36,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2024-11-23 23:50:36,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:36,024 INFO L225 Difference]: With dead ends: 206
[2024-11-23 23:50:36,024 INFO L226 Difference]: Without dead ends: 104
[2024-11-23 23:50:36,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:50:36,026 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 29 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:36,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 222 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:50:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2024-11-23 23:50:36,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2024-11-23 23:50:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 103 states have internal predecessors, (138), 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 23:50:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 138 transitions.
[2024-11-23 23:50:36,034 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 138 transitions. Word has length 37
[2024-11-23 23:50:36,034 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:36,034 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 138 transitions.
[2024-11-23 23:50:36,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 23:50:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 138 transitions.
[2024-11-23 23:50:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2024-11-23 23:50:36,036 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:36,036 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:36,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-11-23 23:50:36,037 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:36,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash 311463020, now seen corresponding path program 1 times
[2024-11-23 23:50:36,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:36,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111550332]
[2024-11-23 23:50:36,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:36,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:36,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:36,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111550332]
[2024-11-23 23:50:36,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111550332] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:36,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:36,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-23 23:50:36,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428760641]
[2024-11-23 23:50:36,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:36,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-23 23:50:36,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:36,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-23 23:50:36,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:50:36,666 INFO L87 Difference]: Start difference. First operand 104 states and 138 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 23:50:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:36,839 INFO L93 Difference]: Finished difference Result 198 states and 269 transitions.
[2024-11-23 23:50:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 23:50:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2024-11-23 23:50:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:36,841 INFO L225 Difference]: With dead ends: 198
[2024-11-23 23:50:36,841 INFO L226 Difference]: Without dead ends: 144
[2024-11-23 23:50:36,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2024-11-23 23:50:36,843 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 56 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:36,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 476 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:50:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2024-11-23 23:50:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 107.
[2024-11-23 23:50:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 106 states have internal predecessors, (142), 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 23:50:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 142 transitions.
[2024-11-23 23:50:36,850 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 142 transitions. Word has length 38
[2024-11-23 23:50:36,850 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:36,851 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 142 transitions.
[2024-11-23 23:50:36,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 23:50:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 142 transitions.
[2024-11-23 23:50:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2024-11-23 23:50:36,852 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:36,852 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:36,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-23 23:50:36,853 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:36,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash 785479526, now seen corresponding path program 1 times
[2024-11-23 23:50:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:36,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621572616]
[2024-11-23 23:50:36,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:36,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:37,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621572616]
[2024-11-23 23:50:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621572616] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:37,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:37,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2024-11-23 23:50:37,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296005906]
[2024-11-23 23:50:37,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:37,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-23 23:50:37,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:37,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-23 23:50:37,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2024-11-23 23:50:37,968 INFO L87 Difference]: Start difference. First operand 107 states and 142 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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 23:50:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:38,380 INFO L93 Difference]: Finished difference Result 165 states and 223 transitions.
[2024-11-23 23:50:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 23:50:38,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2024-11-23 23:50:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:38,382 INFO L225 Difference]: With dead ends: 165
[2024-11-23 23:50:38,382 INFO L226 Difference]: Without dead ends: 109
[2024-11-23 23:50:38,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2024-11-23 23:50:38,384 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 50 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:38,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 262 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:50:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2024-11-23 23:50:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109.
[2024-11-23 23:50:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 108 states have internal predecessors, (144), 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 23:50:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 144 transitions.
[2024-11-23 23:50:38,393 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 144 transitions. Word has length 38
[2024-11-23 23:50:38,393 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:38,394 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 144 transitions.
[2024-11-23 23:50:38,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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 23:50:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 144 transitions.
[2024-11-23 23:50:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2024-11-23 23:50:38,399 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:38,400 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:38,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-23 23:50:38,400 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:38,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:38,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2056132229, now seen corresponding path program 1 times
[2024-11-23 23:50:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:38,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738769018]
[2024-11-23 23:50:38,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:38,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:39,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:39,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738769018]
[2024-11-23 23:50:39,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738769018] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:39,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:39,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-23 23:50:39,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879418618]
[2024-11-23 23:50:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:39,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-23 23:50:39,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:39,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-23 23:50:39,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:50:39,059 INFO L87 Difference]: Start difference. First operand 109 states and 144 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 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 23:50:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:39,376 INFO L93 Difference]: Finished difference Result 177 states and 238 transitions.
[2024-11-23 23:50:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 23:50:39,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39
[2024-11-23 23:50:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:39,378 INFO L225 Difference]: With dead ends: 177
[2024-11-23 23:50:39,378 INFO L226 Difference]: Without dead ends: 101
[2024-11-23 23:50:39,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2024-11-23 23:50:39,379 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 27 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:39,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 279 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:50:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2024-11-23 23:50:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2024-11-23 23:50:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.32) internal successors, (132), 100 states have internal predecessors, (132), 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 23:50:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions.
[2024-11-23 23:50:39,389 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 39
[2024-11-23 23:50:39,389 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:39,389 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions.
[2024-11-23 23:50:39,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 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 23:50:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions.
[2024-11-23 23:50:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2024-11-23 23:50:39,392 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:39,393 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:39,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-11-23 23:50:39,393 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:39,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:39,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1150665499, now seen corresponding path program 1 times
[2024-11-23 23:50:39,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:39,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840666306]
[2024-11-23 23:50:39,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:39,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:40,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:50:40,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840666306]
[2024-11-23 23:50:40,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840666306] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:40,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:40,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-23 23:50:40,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775900149]
[2024-11-23 23:50:40,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:40,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-23 23:50:40,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:50:40,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-23 23:50:40,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2024-11-23 23:50:40,642 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 23:50:41,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:41,069 INFO L93 Difference]: Finished difference Result 161 states and 215 transitions.
[2024-11-23 23:50:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-23 23:50:41,069 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39
[2024-11-23 23:50:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:41,070 INFO L225 Difference]: With dead ends: 161
[2024-11-23 23:50:41,070 INFO L226 Difference]: Without dead ends: 97
[2024-11-23 23:50:41,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210
[2024-11-23 23:50:41,072 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:41,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 328 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:50:41,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2024-11-23 23:50:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2024-11-23 23:50:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 96 states have internal predecessors, (125), 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 23:50:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions.
[2024-11-23 23:50:41,078 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 39
[2024-11-23 23:50:41,078 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:41,078 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions.
[2024-11-23 23:50:41,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 23:50:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions.
[2024-11-23 23:50:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2024-11-23 23:50:41,082 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:41,083 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:41,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2024-11-23 23:50:41,083 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:41,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:41,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1387310391, now seen corresponding path program 1 times
[2024-11-23 23:50:41,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:50:41,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999398540]
[2024-11-23 23:50:41,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:41,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:50:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:50:41,209 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-23 23:50:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:50:41,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-23 23:50:41,339 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-11-23 23:50:41,340 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-23 23:50:41,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2024-11-23 23:50:41,350 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:41,415 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-23 23:50:41,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:50:41 BoogieIcfgContainer
[2024-11-23 23:50:41,421 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-23 23:50:41,422 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-23 23:50:41,422 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-23 23:50:41,422 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-23 23:50:41,423 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:50:24" (3/4) ...
[2024-11-23 23:50:41,427 INFO L149 WitnessPrinter]: No result that supports witness generation found
[2024-11-23 23:50:41,429 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-23 23:50:41,430 INFO L158 Benchmark]: Toolchain (without parser) took 18468.34ms. Allocated memory was 117.4MB in the beginning and 285.2MB in the end (delta: 167.8MB). Free memory was 93.2MB in the beginning and 181.1MB in the end (delta: -87.9MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB.
[2024-11-23 23:50:41,430 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:50:41,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.94ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 79.9MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-23 23:50:41,432 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.71ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 75.3MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:50:41,432 INFO L158 Benchmark]: Boogie Preprocessor took 99.82ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 72.2MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:50:41,433 INFO L158 Benchmark]: RCFGBuilder took 884.75ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 45.1MB in the end (delta: 27.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB.
[2024-11-23 23:50:41,433 INFO L158 Benchmark]: TraceAbstraction took 16874.49ms. Allocated memory was 117.4MB in the beginning and 285.2MB in the end (delta: 167.8MB). Free memory was 44.6MB in the beginning and 181.1MB in the end (delta: -136.5MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB.
[2024-11-23 23:50:41,434 INFO L158 Benchmark]: Witness Printer took 7.21ms. Allocated memory is still 285.2MB. Free memory was 181.1MB in the beginning and 181.1MB in the end (delta: 57.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 23:50:41,436 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.54ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 500.94ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 79.9MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 90.71ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 75.3MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 99.82ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 72.2MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 884.75ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 45.1MB in the end (delta: 27.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 16874.49ms. Allocated memory was 117.4MB in the beginning and 285.2MB in the end (delta: 167.8MB). Free memory was 44.6MB in the beginning and 181.1MB in the end (delta: -136.5MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB.
* Witness Printer took 7.21ms. Allocated memory is still 285.2MB. Free memory was 181.1MB in the beginning and 181.1MB in the end (delta: 57.2kB). 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
- UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: overapproximation of bitwiseAnd at line 89, overapproximation of bitwiseAnd at line 115.
Possible FailurePath:
[L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1);
[L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1);
[L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8);
[L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1);
[L32] const SORT_3 var_4 = 0;
[L33] const SORT_1 var_13 = 1;
[L34] const SORT_3 var_19 = 255;
[L35] const SORT_3 var_23 = 1;
[L37] SORT_1 input_2;
[L39] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3
VAL [mask_SORT_1=1, mask_SORT_3=255, var_13=1, var_19=255, var_23=1, var_4=0]
[L39] SORT_3 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_3;
[L40] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3
VAL [mask_SORT_1=1, mask_SORT_3=255, var_13=1, var_19=255, var_23=1, var_4=0]
[L40] SORT_3 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_3;
[L42] SORT_3 init_6_arg_1 = var_4;
[L43] state_5 = init_6_arg_1
[L44] SORT_3 init_8_arg_1 = var_4;
[L45] state_7 = init_8_arg_1
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1]
[L48] input_2 = __VERIFIER_nondet_uchar()
[L51] SORT_3 var_9_arg_0 = state_5;
[L52] SORT_3 var_9_arg_1 = state_7;
[L53] SORT_1 var_9 = var_9_arg_0 > var_9_arg_1;
[L54] SORT_1 var_10_arg_0 = var_9;
[L55] SORT_1 var_10 = ~var_10_arg_0;
[L56] SORT_1 var_14_arg_0 = var_10;
[L57] SORT_1 var_14 = ~var_14_arg_0;
[L58] SORT_1 var_15_arg_0 = var_13;
[L59] SORT_1 var_15_arg_1 = var_14;
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_15_arg_0=1, var_15_arg_1=-256, var_19=255, var_23=1]
[L60] EXPR var_15_arg_0 & var_15_arg_1
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1]
[L60] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1;
[L61] EXPR var_15 & mask_SORT_1
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1]
[L61] var_15 = var_15 & mask_SORT_1
[L62] SORT_1 bad_16_arg_0 = var_15;
[L63] CALL __VERIFIER_assert(!(bad_16_arg_0))
[L21] COND FALSE !(!(cond))
[L63] RET __VERIFIER_assert(!(bad_16_arg_0))
[L65] SORT_3 var_25_arg_0 = state_5;
[L66] SORT_3 var_25_arg_1 = state_7;
[L67] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1;
[L68] SORT_3 var_24_arg_0 = state_5;
[L69] SORT_3 var_24_arg_1 = var_23;
[L70] SORT_3 var_24 = var_24_arg_0 + var_24_arg_1;
[L71] SORT_3 var_18_arg_0 = state_5;
[L72] SORT_3 var_18_arg_1 = state_7;
[L73] SORT_1 var_18 = var_18_arg_0 > var_18_arg_1;
[L74] SORT_3 var_20_arg_0 = state_7;
[L75] SORT_3 var_20_arg_1 = var_19;
[L76] SORT_1 var_20 = var_20_arg_0 != var_20_arg_1;
[L77] SORT_1 var_21_arg_0 = var_18;
[L78] SORT_1 var_21_arg_1 = var_20;
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_21_arg_0=0, var_21_arg_1=1, var_23=1, var_24=1, var_25=1]
[L79] EXPR var_21_arg_0 | var_21_arg_1
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_24=1, var_25=1]
[L79] SORT_1 var_21 = var_21_arg_0 | var_21_arg_1;
[L80] EXPR var_21 & mask_SORT_1
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_24=1, var_25=1]
[L80] var_21 = var_21 & mask_SORT_1
[L81] SORT_1 var_22_arg_0 = var_21;
[L82] SORT_3 var_22_arg_1 = state_5;
[L83] SORT_3 var_22_arg_2 = state_7;
[L84] SORT_3 var_22 = var_22_arg_0 ? var_22_arg_1 : var_22_arg_2;
[L85] SORT_1 var_26_arg_0 = var_25;
[L86] SORT_3 var_26_arg_1 = var_24;
[L87] SORT_3 var_26_arg_2 = var_22;
[L88] SORT_3 var_26 = var_26_arg_0 ? var_26_arg_1 : var_26_arg_2;
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_26=1]
[L89] EXPR var_26 & mask_SORT_3
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1]
[L89] var_26 = var_26 & mask_SORT_3
[L90] SORT_3 next_27_arg_1 = var_26;
[L91] SORT_3 var_33_arg_0 = state_5;
[L92] SORT_3 var_33_arg_1 = state_7;
[L93] SORT_1 var_33 = var_33_arg_0 > var_33_arg_1;
[L94] SORT_3 var_29_arg_0 = state_5;
[L95] SORT_3 var_29_arg_1 = state_7;
[L96] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1;
[L97] SORT_3 var_30_arg_0 = state_7;
[L98] SORT_3 var_30_arg_1 = var_19;
[L99] SORT_1 var_30 = var_30_arg_0 != var_30_arg_1;
[L100] SORT_1 var_31_arg_0 = var_29;
[L101] SORT_1 var_31_arg_1 = var_30;
VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_31_arg_0=1, var_31_arg_1=1, var_33=0]
[L102] EXPR var_31_arg_0 | var_31_arg_1
VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_33=0]
[L102] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1;
[L103] EXPR var_31 & mask_SORT_1
VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_33=0]
[L103] var_31 = var_31 & mask_SORT_1
[L104] SORT_3 var_28_arg_0 = state_7;
[L105] SORT_3 var_28_arg_1 = var_23;
[L106] SORT_3 var_28 = var_28_arg_0 + var_28_arg_1;
[L107] SORT_1 var_32_arg_0 = var_31;
[L108] SORT_3 var_32_arg_1 = var_28;
[L109] SORT_3 var_32_arg_2 = state_5;
[L110] SORT_3 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2;
[L111] SORT_1 var_34_arg_0 = var_33;
[L112] SORT_3 var_34_arg_1 = state_7;
[L113] SORT_3 var_34_arg_2 = var_32;
[L114] SORT_3 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2;
VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, var_13=1, var_19=255, var_23=1, var_34=1]
[L115] EXPR var_34 & mask_SORT_3
VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, var_13=1, var_19=255, var_23=1]
[L115] var_34 = var_34 & mask_SORT_3
[L116] SORT_3 next_35_arg_1 = var_34;
[L118] state_5 = next_27_arg_1
[L119] state_7 = next_35_arg_1
[L48] input_2 = __VERIFIER_nondet_uchar()
[L51] SORT_3 var_9_arg_0 = state_5;
[L52] SORT_3 var_9_arg_1 = state_7;
[L53] SORT_1 var_9 = var_9_arg_0 > var_9_arg_1;
[L54] SORT_1 var_10_arg_0 = var_9;
[L55] SORT_1 var_10 = ~var_10_arg_0;
[L56] SORT_1 var_14_arg_0 = var_10;
[L57] SORT_1 var_14 = ~var_14_arg_0;
[L58] SORT_1 var_15_arg_0 = var_13;
[L59] SORT_1 var_15_arg_1 = var_14;
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=1, state_7=0, var_13=1, var_15_arg_0=1, var_15_arg_1=-255, var_19=255, var_23=1]
[L60] EXPR var_15_arg_0 & var_15_arg_1
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=1, state_7=0, var_13=1, var_19=255, var_23=1]
[L60] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1;
[L61] EXPR var_15 & mask_SORT_1
VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=1, state_7=0, var_13=1, var_19=255, var_23=1]
[L61] var_15 = var_15 & mask_SORT_1
[L62] SORT_1 bad_16_arg_0 = var_15;
[L63] CALL __VERIFIER_assert(!(bad_16_arg_0))
[L21] COND TRUE !(cond)
[L21] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.7s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 538 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 538 mSDsluCounter, 3782 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2975 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1578 IncrementalHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 807 mSDtfsCounter, 1578 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=9, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 161 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 522 NumberOfCodeBlocks, 522 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 467 ConstructedInterpolants, 0 QuantifiedInterpolants, 2735 SizeOfPredicates, 3 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 68/72 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
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-11-23 23:50:41,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/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
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/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_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/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 64bit --witnessprinter.graph.data.programhash 1a93b4c325da61bdb0bcf5f7bfce47877e5238073f7401e4883b579f193ca117
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 23:50:44,978 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-23 23:50:45,192 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-23 23:50:45,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 23:50:45,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 23:50:45,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 23:50:45,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 23:50:45,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 23:50:45,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 23:50:45,251 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-23 23:50:45,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 23:50:45,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 23:50:45,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 23:50:45,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-23 23:50:45,252 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-23 23:50:45,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 23:50:45,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-23 23:50:45,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-23 23:50:45,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-23 23:50:45,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 23:50:45,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-23 23:50:45,253 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-23 23:50:45,253 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-23 23:50:45,253 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-23 23:50:45,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-23 23:50:45,253 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 23:50:45,254 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-23 23:50:45,254 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 23:50:45,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:50:45,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:50:45,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:50:45,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:50:45,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 23:50:45,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:50:45,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:50:45,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:50:45,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:50:45,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 23:50:45,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 23:50:45,258 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-23 23:50:45,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-23 23:50:45,258 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-23 23:50:45,259 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-23 23:50:45,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 23:50:45,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 23:50:45,259 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 23:50:45,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 23:50:45,260 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_0275a4d5-1398-4507-b5d1-22d6ba28b327/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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a93b4c325da61bdb0bcf5f7bfce47877e5238073f7401e4883b579f193ca117
[2024-11-23 23:50:45,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 23:50:45,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 23:50:45,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 23:50:45,728 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-23 23:50:45,729 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-23 23:50:45,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c
[2024-11-23 23:50:49,348 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data/958f63ae2/3137aeaef8064caf93845e3d11492833/FLAG386b626aa
[2024-11-23 23:50:49,685 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-23 23:50:49,686 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c
[2024-11-23 23:50:49,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data/958f63ae2/3137aeaef8064caf93845e3d11492833/FLAG386b626aa
[2024-11-23 23:50:49,757 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/data/958f63ae2/3137aeaef8064caf93845e3d11492833
[2024-11-23 23:50:49,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 23:50:49,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 23:50:49,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 23:50:49,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 23:50:49,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 23:50:49,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:50:49" (1/1) ...
[2024-11-23 23:50:49,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3885cba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:49, skipping insertion in model container
[2024-11-23 23:50:49,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:50:49" (1/1) ...
[2024-11-23 23:50:49,797 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-23 23:50:49,983 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_0275a4d5-1398-4507-b5d1-22d6ba28b327/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1248,1261]
[2024-11-23 23:50:50,077 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:50:50,093 INFO L200 MainTranslator]: Completed pre-run
[2024-11-23 23:50:50,105 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_0275a4d5-1398-4507-b5d1-22d6ba28b327/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1248,1261]
[2024-11-23 23:50:50,138 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:50:50,159 INFO L204 MainTranslator]: Completed translation
[2024-11-23 23:50:50,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50 WrapperNode
[2024-11-23 23:50:50,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 23:50:50,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 23:50:50,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 23:50:50,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 23:50:50,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,207 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107
[2024-11-23 23:50:50,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 23:50:50,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 23:50:50,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 23:50:50,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 23:50:50,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,238 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 23:50:50,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,246 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 23:50:50,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 23:50:50,258 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 23:50:50,258 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-23 23:50:50,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (1/1) ...
[2024-11-23 23:50:50,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:50:50,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:50:50,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 23:50:50,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 23:50:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 23:50:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-23 23:50:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 23:50:50,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 23:50:50,496 INFO L234 CfgBuilder]: Building ICFG
[2024-11-23 23:50:50,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 23:50:50,884 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live.
[2024-11-23 23:50:50,884 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-23 23:50:50,907 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 23:50:50,907 INFO L312 CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-23 23:50:50,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:50:50 BoogieIcfgContainer
[2024-11-23 23:50:50,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 23:50:50,913 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 23:50:50,915 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 23:50:50,926 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-23 23:50:50,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:50:49" (1/3) ...
[2024-11-23 23:50:50,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eb905c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:50:50, skipping insertion in model container
[2024-11-23 23:50:50,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:50:50" (2/3) ...
[2024-11-23 23:50:50,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eb905c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:50:50, skipping insertion in model container
[2024-11-23 23:50:50,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:50:50" (3/3) ...
[2024-11-23 23:50:50,933 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.paper_v3.c
[2024-11-23 23:50:50,956 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 23:50:50,959 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.paper_v3.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-23 23:50:51,051 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 23:50:51,072 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;@261111eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 23:50:51,072 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-23 23:50:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 23:50:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-23 23:50:51,085 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:51,086 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-23 23:50:51,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:51,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-23 23:50:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:50:51,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665253097]
[2024-11-23 23:50:51,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:51,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:50:51,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:50:51,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:50:51,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 23:50:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:51,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-23 23:50:51,269 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:50:51,713 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 23:50:51,714 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:50:51,715 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:50:51,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665253097]
[2024-11-23 23:50:51,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665253097] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:50:51,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:50:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:50:51,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581760656]
[2024-11-23 23:50:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:50:51,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:50:51,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:50:51,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:50:51,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:50:51,759 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 23:50:51,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:51,833 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions.
[2024-11-23 23:50:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 23:50:51,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2024-11-23 23:50:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:51,847 INFO L225 Difference]: With dead ends: 18
[2024-11-23 23:50:51,848 INFO L226 Difference]: Without dead ends: 10
[2024-11-23 23:50:51,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:50:51,856 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:51,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 23:50:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-23 23:50:51,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2024-11-23 23:50:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 23:50:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-23 23:50:51,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2024-11-23 23:50:51,899 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:51,899 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-23 23:50:51,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 23:50:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-23 23:50:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-23 23:50:51,900 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:51,900 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:50:51,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-23 23:50:52,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:50:52,101 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:52,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:52,102 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times
[2024-11-23 23:50:52,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:50:52,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534047993]
[2024-11-23 23:50:52,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:50:52,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:50:52,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:50:52,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:50:52,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-23 23:50:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:50:52,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 26 conjuncts are in the unsatisfiable core
[2024-11-23 23:50:52,267 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:50:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:52,910 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:50:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:55,774 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:50:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534047993]
[2024-11-23 23:50:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534047993] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:50:55,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:50:55,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-23 23:50:55,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005623479]
[2024-11-23 23:50:55,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:50:55,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-23 23:50:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:50:55,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-23 23:50:55,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2024-11-23 23:50:55,778 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 23:50:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:50:56,232 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions.
[2024-11-23 23:50:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-23 23:50:56,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-23 23:50:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:50:56,234 INFO L225 Difference]: With dead ends: 21
[2024-11-23 23:50:56,234 INFO L226 Difference]: Without dead ends: 19
[2024-11-23 23:50:56,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210
[2024-11-23 23:50:56,238 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:50:56,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:50:56,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2024-11-23 23:50:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18.
[2024-11-23 23:50:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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 23:50:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2024-11-23 23:50:56,250 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8
[2024-11-23 23:50:56,250 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:50:56,250 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2024-11-23 23:50:56,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 23:50:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2024-11-23 23:50:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-23 23:50:56,252 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:50:56,253 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1]
[2024-11-23 23:50:56,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-23 23:50:56,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:50:56,454 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:50:56,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:50:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 2 times
[2024-11-23 23:50:56,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:50:56,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917636242]
[2024-11-23 23:50:56,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 23:50:56,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:50:56,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:50:56,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:50:56,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-23 23:50:56,644 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 23:50:56,644 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 23:50:56,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-11-23 23:50:56,659 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:50:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:50:57,441 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:51:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:51:13,327 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:51:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917636242]
[2024-11-23 23:51:13,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917636242] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:51:13,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:51:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2024-11-23 23:51:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355904351]
[2024-11-23 23:51:13,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:51:13,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-23 23:51:13,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:51:13,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-23 23:51:13,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182
[2024-11-23 23:51:13,331 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 23:51:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:51:16,009 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions.
[2024-11-23 23:51:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-11-23 23:51:16,010 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2024-11-23 23:51:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:51:16,011 INFO L225 Difference]: With dead ends: 39
[2024-11-23 23:51:16,011 INFO L226 Difference]: Without dead ends: 37
[2024-11-23 23:51:16,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=255, Invalid=501, Unknown=0, NotChecked=0, Total=756
[2024-11-23 23:51:16,013 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:51:16,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 29 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:51:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-11-23 23:51:16,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36.
[2024-11-23 23:51:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 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 23:51:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions.
[2024-11-23 23:51:16,033 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 17
[2024-11-23 23:51:16,033 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:51:16,034 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions.
[2024-11-23 23:51:16,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 23:51:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions.
[2024-11-23 23:51:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-11-23 23:51:16,035 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:51:16,035 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1]
[2024-11-23 23:51:16,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-23 23:51:16,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:51:16,236 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:51:16,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:51:16,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1864061253, now seen corresponding path program 3 times
[2024-11-23 23:51:16,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:51:16,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869262037]
[2024-11-23 23:51:16,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 23:51:16,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:51:16,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:51:16,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:51:16,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-23 23:51:16,506 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s)
[2024-11-23 23:51:16,507 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 23:51:16,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 60 conjuncts are in the unsatisfiable core
[2024-11-23 23:51:16,523 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:51:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:51:17,955 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:53:50,032 WARN L286 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 862 DAG size of output: 682 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:54:46,702 WARN L286 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 954 DAG size of output: 756 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:55:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:55:08,238 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:55:08,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869262037]
[2024-11-23 23:55:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869262037] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:55:08,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:55:08,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2024-11-23 23:55:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302776369]
[2024-11-23 23:55:08,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:55:08,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2024-11-23 23:55:08,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:55:08,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2024-11-23 23:55:08,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992
[2024-11-23 23:55:08,241 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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 23:55:23,720 WARN L286 SmtUtils]: Spent 13.76s on a formula simplification that was a NOOP. DAG size: 1420 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:55:38,137 WARN L286 SmtUtils]: Spent 13.81s on a formula simplification that was a NOOP. DAG size: 1422 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:55:50,334 WARN L286 SmtUtils]: Spent 10.49s on a formula simplification that was a NOOP. DAG size: 1222 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:56:00,984 WARN L286 SmtUtils]: Spent 9.94s on a formula simplification that was a NOOP. DAG size: 1224 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:56:09,499 WARN L286 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 1036 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:56:18,399 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 1038 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:56:25,441 WARN L286 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 862 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:56:32,606 WARN L286 SmtUtils]: Spent 6.42s on a formula simplification that was a NOOP. DAG size: 864 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 23:56:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:56:59,896 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions.
[2024-11-23 23:56:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2024-11-23 23:56:59,897 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35
[2024-11-23 23:56:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:56:59,898 INFO L225 Difference]: With dead ends: 75
[2024-11-23 23:56:59,898 INFO L226 Difference]: Without dead ends: 73
[2024-11-23 23:56:59,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 137.6s TimeCoverageRelationStatistics Valid=1252, Invalid=2780, Unknown=0, NotChecked=0, Total=4032
[2024-11-23 23:56:59,902 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time
[2024-11-23 23:56:59,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 59 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time]
[2024-11-23 23:56:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2024-11-23 23:56:59,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72.
[2024-11-23 23:56:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 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 23:56:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions.
[2024-11-23 23:56:59,961 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 35
[2024-11-23 23:56:59,962 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:56:59,962 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions.
[2024-11-23 23:56:59,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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 23:56:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions.
[2024-11-23 23:56:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2024-11-23 23:56:59,965 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:56:59,965 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1]
[2024-11-23 23:56:59,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-23 23:57:00,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:57:00,166 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:57:00,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:57:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1735023419, now seen corresponding path program 4 times
[2024-11-23 23:57:00,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:57:00,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416720447]
[2024-11-23 23:57:00,169 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-23 23:57:00,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:57:00,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:57:00,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:57:00,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0275a4d5-1398-4507-b5d1-22d6ba28b327/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-23 23:57:03,544 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-23 23:57:03,544 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 23:57:03,555 WARN L254 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 240 conjuncts are in the unsatisfiable core
[2024-11-23 23:57:03,597 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:57:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:57:08,756 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:59:33,634 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 615 DAG size of output: 591 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:01:06,396 WARN L286 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 958 DAG size of output: 762 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:02:26,358 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 1052 DAG size of output: 836 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:02:44,413 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 839 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:03:11,696 WARN L286 SmtUtils]: Spent 12.87s on a formula simplification. DAG size of input: 837 DAG size of output: 801 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:04:14,175 WARN L286 SmtUtils]: Spent 12.05s on a formula simplification. DAG size of input: 1146 DAG size of output: 910 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:04:38,309 WARN L286 SmtUtils]: Spent 7.46s on a formula simplification that was a NOOP. DAG size: 913 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)