./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/sum_by_3.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/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_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/sum_by_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbdeb806056afbf44cc985ff91f53f00e848d18cfefb92d1f6744eb19cf6d91b
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 22:52:49,772 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-23 22:52:49,854 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-23 22:52:49,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 22:52:49,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 22:52:49,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 22:52:49,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 22:52:49,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 22:52:49,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 22:52:49,888 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-23 22:52:49,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 22:52:49,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 22:52:49,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 22:52:49,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-23 22:52:49,889 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-23 22:52:49,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 22:52:49,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-23 22:52:49,890 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-23 22:52:49,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-23 22:52:49,890 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-23 22:52:49,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-23 22:52:49,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-23 22:52:49,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 22:52:49,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-23 22:52:49,893 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-23 22:52:49,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-23 22:52:49,893 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 22:52:49,893 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-23 22:52:49,893 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 22:52:49,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 22:52:49,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 22:52:49,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 22:52:49,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 22:52:49,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 22:52:49,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 22:52:49,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 22:52:49,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 22:52:49,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 22:52:49,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 22:52:49,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 22:52:49,895 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-23 22:52:49,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-23 22:52:49,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-23 22:52:49,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-23 22:52:49,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 22:52:49,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 22:52:49,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 22:52:49,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 22:52:49,895 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_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbdeb806056afbf44cc985ff91f53f00e848d18cfefb92d1f6744eb19cf6d91b
[2024-11-23 22:52:50,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 22:52:50,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 22:52:50,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 22:52:50,240 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-23 22:52:50,241 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-23 22:52:50,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/loops-crafted-1/sum_by_3.c
[2024-11-23 22:52:53,366 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/data/c87be50d6/00f96768703141c0948e1d29b199a4ab/FLAGa3d0ff01a
[2024-11-23 22:52:53,630 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-23 22:52:53,631 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/sv-benchmarks/c/loops-crafted-1/sum_by_3.c
[2024-11-23 22:52:53,639 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/data/c87be50d6/00f96768703141c0948e1d29b199a4ab/FLAGa3d0ff01a
[2024-11-23 22:52:53,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/data/c87be50d6/00f96768703141c0948e1d29b199a4ab
[2024-11-23 22:52:53,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 22:52:53,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 22:52:53,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 22:52:53,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 22:52:53,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 22:52:53,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:53,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f3a5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53, skipping insertion in model container
[2024-11-23 22:52:53,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:53,692 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-23 22:52:53,867 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_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/sv-benchmarks/c/loops-crafted-1/sum_by_3.c[406,419]
[2024-11-23 22:52:53,892 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 22:52:53,907 INFO L200 MainTranslator]: Completed pre-run
[2024-11-23 22:52:53,920 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_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/sv-benchmarks/c/loops-crafted-1/sum_by_3.c[406,419]
[2024-11-23 22:52:53,931 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 22:52:53,951 INFO L204 MainTranslator]: Completed translation
[2024-11-23 22:52:53,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53 WrapperNode
[2024-11-23 22:52:53,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 22:52:53,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 22:52:53,954 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 22:52:53,954 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 22:52:53,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:53,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,000 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43
[2024-11-23 22:52:54,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 22:52:54,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 22:52:54,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 22:52:54,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 22:52:54,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,034 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 22:52:54,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,043 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,051 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 22:52:54,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 22:52:54,057 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 22:52:54,057 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-23 22:52:54,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (1/1) ...
[2024-11-23 22:52:54,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 22:52:54,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:52:54,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 22:52:54,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 22:52:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 22:52:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-23 22:52:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 22:52:54,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 22:52:54,223 INFO L234 CfgBuilder]: Building ICFG
[2024-11-23 22:52:54,226 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 22:52:54,396 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live.
[2024-11-23 22:52:54,397 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-23 22:52:54,408 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 22:52:54,408 INFO L312 CfgBuilder]: Removed 3 assume(true) statements.
[2024-11-23 22:52:54,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:52:54 BoogieIcfgContainer
[2024-11-23 22:52:54,409 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 22:52:54,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 22:52:54,412 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 22:52:54,418 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-23 22:52:54,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:52:53" (1/3) ...
[2024-11-23 22:52:54,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12644284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:52:54, skipping insertion in model container
[2024-11-23 22:52:54,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:53" (2/3) ...
[2024-11-23 22:52:54,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12644284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:52:54, skipping insertion in model container
[2024-11-23 22:52:54,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:52:54" (3/3) ...
[2024-11-23 22:52:54,423 INFO L128 eAbstractionObserver]: Analyzing ICFG sum_by_3.c
[2024-11-23 22:52:54,442 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 22:52:54,445 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sum_by_3.c that has 1 procedures, 19 locations, 1 initial locations, 3 loop locations, and 1 error locations.
[2024-11-23 22:52:54,523 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 22:52:54,541 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;@2654ceb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 22:52:54,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-23 22:52:54,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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 22:52:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-23 22:52:54,553 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 22:52:54,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:52:54,555 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 22:52:54,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:52:54,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1158557456, now seen corresponding path program 1 times
[2024-11-23 22:52:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:52:54,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823883486]
[2024-11-23 22:52:54,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:52:54,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:52:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:52:54,742 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 22:52:54,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:52:54,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823883486]
[2024-11-23 22:52:54,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823883486] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:52:54,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:52:54,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-23 22:52:54,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656918567]
[2024-11-23 22:52:54,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:52:54,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-23 22:52:54,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:52:54,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-23 22:52:54,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-23 22:52:54,776 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 22:52:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 22:52:54,790 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions.
[2024-11-23 22:52:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-23 22:52:54,792 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) Word has length 11
[2024-11-23 22:52:54,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 22:52:54,801 INFO L225 Difference]: With dead ends: 33
[2024-11-23 22:52:54,802 INFO L226 Difference]: Without dead ends: 15
[2024-11-23 22:52:54,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-23 22:52:54,812 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 22:52:54,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 22:52:54,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2024-11-23 22:52:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2024-11-23 22:52:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 22:52:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions.
[2024-11-23 22:52:54,856 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11
[2024-11-23 22:52:54,857 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 22:52:54,857 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions.
[2024-11-23 22:52:54,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 22:52:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions.
[2024-11-23 22:52:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-23 22:52:54,858 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 22:52:54,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:52:54,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-23 22:52:54,858 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 22:52:54,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:52:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1632233192, now seen corresponding path program 1 times
[2024-11-23 22:52:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:52:54,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906530761]
[2024-11-23 22:52:54,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:52:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:52:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:52:56,020 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 22:52:56,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:52:56,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906530761]
[2024-11-23 22:52:56,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906530761] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:52:56,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:52:56,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-23 22:52:56,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378301566]
[2024-11-23 22:52:56,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:52:56,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-23 22:52:56,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:52:56,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-23 22:52:56,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-23 22:52:56,027 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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 22:52:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 22:52:56,280 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions.
[2024-11-23 22:52:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-23 22:52:56,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) Word has length 11
[2024-11-23 22:52:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 22:52:56,282 INFO L225 Difference]: With dead ends: 36
[2024-11-23 22:52:56,282 INFO L226 Difference]: Without dead ends: 32
[2024-11-23 22:52:56,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2024-11-23 22:52:56,284 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 46 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 22:52:56,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 19 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 22:52:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2024-11-23 22:52:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20.
[2024-11-23 22:52:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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 22:52:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions.
[2024-11-23 22:52:56,295 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11
[2024-11-23 22:52:56,295 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 22:52:56,296 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions.
[2024-11-23 22:52:56,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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 22:52:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions.
[2024-11-23 22:52:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-23 22:52:56,297 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 22:52:56,297 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:52:56,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-23 22:52:56,298 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 22:52:56,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:52:56,298 INFO L85 PathProgramCache]: Analyzing trace with hash -463823428, now seen corresponding path program 1 times
[2024-11-23 22:52:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:52:56,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044995462]
[2024-11-23 22:52:56,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:52:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:52:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:52:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:52:57,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:52:57,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044995462]
[2024-11-23 22:52:57,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044995462] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:52:57,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325507538]
[2024-11-23 22:52:57,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:52:57,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:52:57,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:52:57,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:52:57,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 22:52:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:52:57,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-23 22:52:57,813 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:52:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:52:58,137 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:52:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:52:58,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325507538] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:52:58,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:52:58,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21
[2024-11-23 22:52:58,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952772560]
[2024-11-23 22:52:58,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:52:58,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-11-23 22:52:58,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:52:58,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-11-23 22:52:58,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420
[2024-11-23 22:52:58,567 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 22:53:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 22:53:00,210 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions.
[2024-11-23 22:53:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2024-11-23 22:53:00,211 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 13
[2024-11-23 22:53:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 22:53:00,214 INFO L225 Difference]: With dead ends: 100
[2024-11-23 22:53:00,215 INFO L226 Difference]: Without dead ends: 92
[2024-11-23 22:53:00,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=547, Invalid=1615, Unknown=0, NotChecked=0, Total=2162
[2024-11-23 22:53:00,216 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 281 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-23 22:53:00,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 26 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-23 22:53:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-11-23 22:53:00,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 32.
[2024-11-23 22:53:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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 22:53:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions.
[2024-11-23 22:53:00,243 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13
[2024-11-23 22:53:00,243 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 22:53:00,243 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions.
[2024-11-23 22:53:00,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 22:53:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions.
[2024-11-23 22:53:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-23 22:53:00,246 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 22:53:00,246 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:53:00,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-23 22:53:00,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:53:00,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 22:53:00,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:53:00,448 INFO L85 PathProgramCache]: Analyzing trace with hash 227256060, now seen corresponding path program 1 times
[2024-11-23 22:53:00,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:53:00,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948601550]
[2024-11-23 22:53:00,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:53:00,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:53:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:53:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:53:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:53:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948601550]
[2024-11-23 22:53:00,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948601550] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:53:00,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:53:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 22:53:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931511512]
[2024-11-23 22:53:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:53:00,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 22:53:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:53:00,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 22:53:00,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-23 22:53:00,571 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. 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 22:53:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 22:53:00,624 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions.
[2024-11-23 22:53:00,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 22:53:00,625 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 22:53:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 22:53:00,626 INFO L225 Difference]: With dead ends: 45
[2024-11-23 22:53:00,626 INFO L226 Difference]: Without dead ends: 32
[2024-11-23 22:53:00,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-23 22:53:00,629 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 22:53:00,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 22:53:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2024-11-23 22:53:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2024-11-23 22:53:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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 22:53:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions.
[2024-11-23 22:53:00,654 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 13
[2024-11-23 22:53:00,654 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 22:53:00,654 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions.
[2024-11-23 22:53:00,655 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 22:53:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions.
[2024-11-23 22:53:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-23 22:53:00,655 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 22:53:00,655 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:53:00,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-23 22:53:00,656 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 22:53:00,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:53:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1662311100, now seen corresponding path program 1 times
[2024-11-23 22:53:00,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:53:00,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920044710]
[2024-11-23 22:53:00,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:53:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:53:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:53:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:53:01,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:53:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920044710]
[2024-11-23 22:53:01,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920044710] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:53:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493271222]
[2024-11-23 22:53:01,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:53:01,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:53:01,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:53:01,026 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:53:01,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-23 22:53:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:53:01,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-23 22:53:01,087 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:53:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:53:01,161 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:53:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-23 22:53:01,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493271222] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:53:01,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-23 22:53:01,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 7] total 12
[2024-11-23 22:53:01,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726373489]
[2024-11-23 22:53:01,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:53:01,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 22:53:01,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:53:01,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 22:53:01,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2024-11-23 22:53:01,315 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 22:53:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 22:53:01,378 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions.
[2024-11-23 22:53:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 22:53:01,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 17
[2024-11-23 22:53:01,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 22:53:01,380 INFO L225 Difference]: With dead ends: 43
[2024-11-23 22:53:01,381 INFO L226 Difference]: Without dead ends: 30
[2024-11-23 22:53:01,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156
[2024-11-23 22:53:01,382 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 22:53:01,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 22:53:01,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-11-23 22:53:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2024-11-23 22:53:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 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 22:53:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2024-11-23 22:53:01,403 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 17
[2024-11-23 22:53:01,403 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 22:53:01,403 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2024-11-23 22:53:01,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 22:53:01,403 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2024-11-23 22:53:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-23 22:53:01,406 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 22:53:01,407 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:53:01,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-23 22:53:01,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:53:01,611 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 22:53:01,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:53:01,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1431142020, now seen corresponding path program 1 times
[2024-11-23 22:53:01,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:53:01,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407347519]
[2024-11-23 22:53:01,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:53:01,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:53:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:53:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:53:02,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:53:02,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407347519]
[2024-11-23 22:53:02,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407347519] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:53:02,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273160989]
[2024-11-23 22:53:02,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:53:02,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:53:02,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:53:02,064 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:53:02,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-23 22:53:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:53:02,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-23 22:53:02,111 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:53:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-23 22:53:02,152 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 22:53:02,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273160989] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:53:02,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-23 22:53:02,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10
[2024-11-23 22:53:02,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216602343]
[2024-11-23 22:53:02,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:53:02,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 22:53:02,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:53:02,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 22:53:02,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2024-11-23 22:53:02,154 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 22:53:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 22:53:02,202 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions.
[2024-11-23 22:53:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 22:53:02,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 17
[2024-11-23 22:53:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 22:53:02,204 INFO L225 Difference]: With dead ends: 36
[2024-11-23 22:53:02,204 INFO L226 Difference]: Without dead ends: 20
[2024-11-23 22:53:02,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-23 22:53:02,205 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 22:53:02,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 22:53:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2024-11-23 22:53:02,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2024-11-23 22:53:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 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 22:53:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2024-11-23 22:53:02,214 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17
[2024-11-23 22:53:02,214 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 22:53:02,214 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2024-11-23 22:53:02,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 22:53:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2024-11-23 22:53:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-11-23 22:53:02,215 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 22:53:02,216 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:53:02,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-23 22:53:02,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-11-23 22:53:02,419 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 22:53:02,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:53:02,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2006346328, now seen corresponding path program 2 times
[2024-11-23 22:53:02,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:53:02,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627626563]
[2024-11-23 22:53:02,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:53:02,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:53:02,455 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:53:02,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:53:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:53:03,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:53:03,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627626563]
[2024-11-23 22:53:03,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627626563] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:53:03,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326922376]
[2024-11-23 22:53:03,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:53:03,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:53:03,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:53:03,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:53:03,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-23 22:53:03,814 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:53:03,815 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:53:03,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-23 22:53:03,817 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:53:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:53:04,332 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:53:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:53:05,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326922376] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:53:05,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:53:05,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 33
[2024-11-23 22:53:05,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639905050]
[2024-11-23 22:53:05,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:53:05,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2024-11-23 22:53:05,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:53:05,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2024-11-23 22:53:05,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056
[2024-11-23 22:53:05,057 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 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 22:53:22,572 WARN L286 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 58 DAG size of output: 57 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 22:53:24,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-23 22:53:30,568 WARN L286 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 64 DAG size of output: 63 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 22:53:45,071 WARN L286 SmtUtils]: Spent 9.97s on a formula simplification. DAG size of input: 69 DAG size of output: 68 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-23 22:53:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 22:53:48,187 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions.
[2024-11-23 22:53:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2024-11-23 22:53:48,188 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 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 19
[2024-11-23 22:53:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 22:53:48,189 INFO L225 Difference]: With dead ends: 51
[2024-11-23 22:53:48,189 INFO L226 Difference]: Without dead ends: 33
[2024-11-23 22:53:48,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=743, Invalid=3039, Unknown=0, NotChecked=0, Total=3782
[2024-11-23 22:53:48,192 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 125 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2024-11-23 22:53:48,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 35 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time]
[2024-11-23 22:53:48,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2024-11-23 22:53:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32.
[2024-11-23 22:53:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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 22:53:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions.
[2024-11-23 22:53:48,202 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19
[2024-11-23 22:53:48,203 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 22:53:48,203 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions.
[2024-11-23 22:53:48,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 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 22:53:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions.
[2024-11-23 22:53:48,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-23 22:53:48,204 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 22:53:48,204 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:53:48,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-23 22:53:48,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-11-23 22:53:48,408 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 22:53:48,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:53:48,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1669307776, now seen corresponding path program 3 times
[2024-11-23 22:53:48,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:53:48,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058476606]
[2024-11-23 22:53:48,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 22:53:48,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:53:48,437 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-11-23 22:53:48,437 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:53:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked.
[2024-11-23 22:53:49,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:53:49,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058476606]
[2024-11-23 22:53:49,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058476606] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:53:49,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746592582]
[2024-11-23 22:53:49,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 22:53:49,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:53:49,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:53:49,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:53:49,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-23 22:53:50,029 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-11-23 22:53:50,029 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:53:50,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-23 22:53:50,032 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:54:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked.
[2024-11-23 22:54:00,060 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:54:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked.
[2024-11-23 22:54:18,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746592582] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:54:18,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:54:18,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22
[2024-11-23 22:54:18,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858354382]
[2024-11-23 22:54:18,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:54:18,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-23 22:54:18,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:54:18,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-23 22:54:18,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=377, Unknown=3, NotChecked=0, Total=462
[2024-11-23 22:54:18,067 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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 22:54:29,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-23 22:54:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 22:54:34,576 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions.
[2024-11-23 22:54:34,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-23 22:54:34,577 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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 31
[2024-11-23 22:54:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 22:54:34,578 INFO L225 Difference]: With dead ends: 32
[2024-11-23 22:54:34,578 INFO L226 Difference]: Without dead ends: 0
[2024-11-23 22:54:34,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=134, Invalid=511, Unknown=5, NotChecked=0, Total=650
[2024-11-23 22:54:34,579 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2024-11-23 22:54:34,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2024-11-23 22:54:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-23 22:54:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-23 22:54:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:54:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-23 22:54:34,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31
[2024-11-23 22:54:34,580 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 22:54:34,580 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-23 22:54:34,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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 22:54:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-23 22:54:34,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-23 22:54:34,585 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-23 22:54:34,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-23 22:54:34,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2024-11-23 22:54:34,789 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1]
[2024-11-23 22:54:34,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-23 22:54:53,483 WARN L286 SmtUtils]: Spent 18.47s on a formula simplification. DAG size of input: 162 DAG size of output: 31 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 22:55:11,092 WARN L286 SmtUtils]: Spent 17.31s on a formula simplification. DAG size of input: 165 DAG size of output: 24 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)
[2024-11-23 22:55:11,096 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-23 22:55:11,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:55:11 BoogieIcfgContainer
[2024-11-23 22:55:11,116 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-23 22:55:11,116 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-23 22:55:11,117 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-23 22:55:11,117 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-23 22:55:11,118 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:52:54" (3/4) ...
[2024-11-23 22:55:11,127 INFO L146 WitnessPrinter]: Generating witness for correct program
[2024-11-23 22:55:11,136 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges
[2024-11-23 22:55:11,137 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-23 22:55:11,137 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-23 22:55:11,137 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-23 22:55:11,231 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/witness.graphml
[2024-11-23 22:55:11,232 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/witness.yml
[2024-11-23 22:55:11,232 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-23 22:55:11,233 INFO L158 Benchmark]: Toolchain (without parser) took 137572.03ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 92.7MB in the beginning and 145.0MB in the end (delta: -52.3MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB.
[2024-11-23 22:55:11,234 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 22:55:11,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.47ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 81.6MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 22:55:11,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.81ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 22:55:11,236 INFO L158 Benchmark]: Boogie Preprocessor took 51.21ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 79.3MB in the end (delta: 911.1kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 22:55:11,236 INFO L158 Benchmark]: RCFGBuilder took 352.03ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 69.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 22:55:11,237 INFO L158 Benchmark]: TraceAbstraction took 136703.90ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 68.5MB in the beginning and 58.1MB in the end (delta: 10.5MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB.
[2024-11-23 22:55:11,239 INFO L158 Benchmark]: Witness Printer took 115.48ms. Allocated memory is still 176.2MB. Free memory was 58.1MB in the beginning and 145.0MB in the end (delta: -86.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 22:55:11,241 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 290.47ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 81.6MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 46.81ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 51.21ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 79.3MB in the end (delta: 911.1kB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 352.03ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 69.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 136703.90ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 68.5MB in the beginning and 58.1MB in the end (delta: 10.5MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB.
* Witness Printer took 115.48ms. Allocated memory is still 176.2MB. Free memory was 58.1MB in the beginning and 145.0MB in the end (delta: -86.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 10]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 100.3s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 61.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 479 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 479 mSDsluCounter, 167 SdHoareTripleChecker+Invalid, 8.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 851 IncrementalHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 71 mSDtfsCounter, 851 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 82.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 97, 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, 8 MinimizatonAttempts, 73 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 36.5s InterpolantComputationTime, 229 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 292 ConstructedInterpolants, 19 QuantifiedInterpolants, 4702 SizeOfPredicates, 14 NumberOfNonLiveVariables, 244 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 240/377 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 21]: Loop Invariant
Derived loop invariant: ((((i == 0) && (n <= 20000001)) && (SIZE == 20000001)) || (((((i + ((((long long) -1 * n) / 4294967296) - 1)) <= (20000000 + ((((((-1 * ((((long long) -1 * n) / 4294967296) - 1)) + ((long long) 2 * n)) + -3) >= 0) ? ((((-1 * ((((long long) -1 * n) / 4294967296) - 1)) + ((long long) 2 * n)) + -3) / 2863311531) : (((((-1 * ((((long long) -1 * n) / 4294967296) - 1)) + ((long long) 2 * n)) + -3) / 2863311531) - 1)) * 1431655765))) && (SIZE == 20000001)) && (((4294967295 + i) % 4294967296) <= 20000000)) && (0 <= (((((long long) -1 * n) + 20000001) >= 0) ? ((((long long) -1 * n) + 20000001) / 4294967296) : (((((long long) -1 * n) + 20000001) / 4294967296) - 1)))))
- InvariantResult [Line: 29]: Loop Invariant
Derived loop invariant: (((((((n <= i) && (((((long long) 3 * i) % 4294967296) / 3) <= 20000001)) && (n <= k)) && (((((((long long) i + j) + k) >= 0) ? ((((long long) i + j) + k) % 4294967296) : (((((long long) i + j) + k) % 4294967296) + 4294967296)) / 3) <= 20000001)) && (((((((long long) 2 * j) + i) >= 0) ? ((((long long) 2 * j) + i) % 4294967296) : (((((long long) 2 * j) + i) % 4294967296) + 4294967296)) / 3) <= 20000001)) && (SIZE == 20000001)) && (n <= ((j >= 0) ? (j % 4294967296) : ((j % 4294967296) + 4294967296))))
- InvariantResult [Line: 25]: Loop Invariant
Derived loop invariant: (((((n <= i) && (((((long long) 3 * i) % 4294967296) / 3) <= 20000001)) && (((((((long long) 2 * j) + i) >= 0) ? ((((long long) 2 * j) + i) % 4294967296) : (((((long long) 2 * j) + i) % 4294967296) + 4294967296)) / 3) <= 20000001)) && (SIZE == 20000001)) && (n <= ((j >= 0) ? (j % 4294967296) : ((j % 4294967296) + 4294967296))))
RESULT: Ultimate proved your program to be correct!
[2024-11-23 22:55:11,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca34a55c-0286-4b5e-97ab-79ec06d7fd3b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE