./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/bh2017-ex-add.i --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_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/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_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/bh2017-ex-add.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/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_89771f5d-530b-41a9-a922-c15ba651a832/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 9067bcd66b4865bfb6aa4fb5c23797c879c2b81c36d918479d6650dc5a4b5edc
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 01:45:06,748 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 01:45:06,832 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-24 01:45:06,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 01:45:06,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 01:45:06,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 01:45:06,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 01:45:06,870 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 01:45:06,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 01:45:06,870 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 01:45:06,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 01:45:06,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 01:45:06,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 01:45:06,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 01:45:06,873 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 01:45:06,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-24 01:45:06,874 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 01:45:06,875 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 01:45:06,875 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 01:45:06,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:45:06,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:45:06,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:45:06,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:45:06,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 01:45:06,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:45:06,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:45:06,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:45:06,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:45:06,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 01:45:06,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 01:45:06,877 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-24 01:45:06,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 01:45:06,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-24 01:45:06,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 01:45:06,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 01:45:06,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 01:45:06,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 01:45:06,878 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 01:45:06,878 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_89771f5d-530b-41a9-a922-c15ba651a832/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 -> 9067bcd66b4865bfb6aa4fb5c23797c879c2b81c36d918479d6650dc5a4b5edc
[2024-11-24 01:45:07,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 01:45:07,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 01:45:07,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 01:45:07,224 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 01:45:07,224 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 01:45:07,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/loop-lit/bh2017-ex-add.i
[2024-11-24 01:45:10,275 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/data/0b0c29ab2/d5de0e8ae3f544f199f6d76c0795cdd9/FLAGd7a4573fe
[2024-11-24 01:45:10,553 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 01:45:10,556 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/sv-benchmarks/c/loop-lit/bh2017-ex-add.i
[2024-11-24 01:45:10,565 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/data/0b0c29ab2/d5de0e8ae3f544f199f6d76c0795cdd9/FLAGd7a4573fe
[2024-11-24 01:45:10,856 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/data/0b0c29ab2/d5de0e8ae3f544f199f6d76c0795cdd9
[2024-11-24 01:45:10,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 01:45:10,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 01:45:10,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 01:45:10,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 01:45:10,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 01:45:10,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:45:10" (1/1) ...
[2024-11-24 01:45:10,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e0ba38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:10, skipping insertion in model container
[2024-11-24 01:45:10,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:45:10" (1/1) ...
[2024-11-24 01:45:10,883 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 01:45:11,052 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_89771f5d-530b-41a9-a922-c15ba651a832/sv-benchmarks/c/loop-lit/bh2017-ex-add.i[802,815]
[2024-11-24 01:45:11,071 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:45:11,083 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 01:45:11,096 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_89771f5d-530b-41a9-a922-c15ba651a832/sv-benchmarks/c/loop-lit/bh2017-ex-add.i[802,815]
[2024-11-24 01:45:11,102 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:45:11,117 INFO L204 MainTranslator]: Completed translation
[2024-11-24 01:45:11,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11 WrapperNode
[2024-11-24 01:45:11,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 01:45:11,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 01:45:11,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 01:45:11,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 01:45:11,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,148 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49
[2024-11-24 01:45:11,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 01:45:11,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 01:45:11,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 01:45:11,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 01:45:11,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,166 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].
[2024-11-24 01:45:11,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,167 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,169 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 01:45:11,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 01:45:11,180 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 01:45:11,180 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 01:45:11,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (1/1) ...
[2024-11-24 01:45:11,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:45:11,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:45:11,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 01:45:11,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 01:45:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 01:45:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 01:45:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 01:45:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 01:45:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-24 01:45:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-24 01:45:11,298 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 01:45:11,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 01:45:11,478 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live.
[2024-11-24 01:45:11,478 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 01:45:11,488 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 01:45:11,488 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-24 01:45:11,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:45:11 BoogieIcfgContainer
[2024-11-24 01:45:11,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 01:45:11,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 01:45:11,491 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 01:45:11,496 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 01:45:11,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:45:10" (1/3) ...
[2024-11-24 01:45:11,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e299b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:45:11, skipping insertion in model container
[2024-11-24 01:45:11,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:11" (2/3) ...
[2024-11-24 01:45:11,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e299b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:45:11, skipping insertion in model container
[2024-11-24 01:45:11,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:45:11" (3/3) ...
[2024-11-24 01:45:11,499 INFO L128 eAbstractionObserver]: Analyzing ICFG bh2017-ex-add.i
[2024-11-24 01:45:11,515 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 01:45:11,518 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bh2017-ex-add.i that has 2 procedures, 26 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-24 01:45:11,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 01:45:11,602 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;@491e3bfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 01:45:11,603 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-24 01:45:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-24 01:45:11,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-24 01:45:11,615 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:45:11,615 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-24 01:45:11,616 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:45:11,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:45:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash 891587130, now seen corresponding path program 1 times
[2024-11-24 01:45:11,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:45:11,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715929284]
[2024-11-24 01:45:11,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:45:11,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:45:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:45:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:45:12,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:45:12,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715929284]
[2024-11-24 01:45:12,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715929284] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:45:12,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:45:12,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-24 01:45:12,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102277133]
[2024-11-24 01:45:12,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:45:12,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 01:45:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:45:12,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 01:45:12,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-24 01:45:12,073 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:45:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:45:12,147 INFO L93 Difference]: Finished difference Result 50 states and 77 transitions.
[2024-11-24 01:45:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 01:45:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-11-24 01:45:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:45:12,158 INFO L225 Difference]: With dead ends: 50
[2024-11-24 01:45:12,158 INFO L226 Difference]: Without dead ends: 26
[2024-11-24 01:45:12,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-24 01:45:12,165 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 01:45:12,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 82 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 01:45:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2024-11-24 01:45:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2024-11-24 01:45:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-24 01:45:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions.
[2024-11-24 01:45:12,206 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 6
[2024-11-24 01:45:12,206 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:45:12,206 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions.
[2024-11-24 01:45:12,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:45:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions.
[2024-11-24 01:45:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-24 01:45:12,207 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:45:12,207 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:45:12,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-24 01:45:12,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:45:12,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:45:12,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1448608101, now seen corresponding path program 1 times
[2024-11-24 01:45:12,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:45:12,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489683520]
[2024-11-24 01:45:12,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:45:12,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:45:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:45:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:45:12,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:45:12,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489683520]
[2024-11-24 01:45:12,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489683520] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:45:12,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:45:12,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-24 01:45:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62490400]
[2024-11-24 01:45:12,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:45:12,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 01:45:12,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:45:12,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 01:45:12,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-24 01:45:12,381 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-24 01:45:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:45:12,456 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions.
[2024-11-24 01:45:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 01:45:12,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2024-11-24 01:45:12,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:45:12,477 INFO L225 Difference]: With dead ends: 32
[2024-11-24 01:45:12,478 INFO L226 Difference]: Without dead ends: 30
[2024-11-24 01:45:12,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-24 01:45:12,479 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 01:45:12,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 89 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 01:45:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-11-24 01:45:12,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2024-11-24 01:45:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-24 01:45:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions.
[2024-11-24 01:45:12,490 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 11
[2024-11-24 01:45:12,490 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:45:12,490 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions.
[2024-11-24 01:45:12,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-24 01:45:12,491 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions.
[2024-11-24 01:45:12,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-24 01:45:12,492 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:45:12,492 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:45:12,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-24 01:45:12,492 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:45:12,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:45:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1610587298, now seen corresponding path program 1 times
[2024-11-24 01:45:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:45:12,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42131925]
[2024-11-24 01:45:12,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:45:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:45:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:45:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-24 01:45:12,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:45:12,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42131925]
[2024-11-24 01:45:12,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42131925] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:45:12,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:45:12,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-24 01:45:12,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043091348]
[2024-11-24 01:45:12,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:45:12,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 01:45:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:45:12,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 01:45:12,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 01:45:12,552 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-24 01:45:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:45:12,567 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions.
[2024-11-24 01:45:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 01:45:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20
[2024-11-24 01:45:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:45:12,569 INFO L225 Difference]: With dead ends: 70
[2024-11-24 01:45:12,569 INFO L226 Difference]: Without dead ends: 42
[2024-11-24 01:45:12,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 01:45:12,571 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 01:45:12,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 57 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 01:45:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2024-11-24 01:45:12,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2024-11-24 01:45:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-24 01:45:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions.
[2024-11-24 01:45:12,581 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 20
[2024-11-24 01:45:12,581 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:45:12,581 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions.
[2024-11-24 01:45:12,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-24 01:45:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions.
[2024-11-24 01:45:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-11-24 01:45:12,582 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:45:12,582 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:45:12,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-24 01:45:12,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:45:12,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:45:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash 682099603, now seen corresponding path program 1 times
[2024-11-24 01:45:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:45:12,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476303185]
[2024-11-24 01:45:12,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:45:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:45:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:45:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-24 01:45:12,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:45:12,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476303185]
[2024-11-24 01:45:12,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476303185] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:45:12,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:45:12,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-24 01:45:12,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577274439]
[2024-11-24 01:45:12,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:45:12,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 01:45:12,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:45:12,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 01:45:12,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 01:45:12,716 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-24 01:45:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:45:12,756 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions.
[2024-11-24 01:45:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 01:45:12,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22
[2024-11-24 01:45:12,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:45:12,757 INFO L225 Difference]: With dead ends: 104
[2024-11-24 01:45:12,757 INFO L226 Difference]: Without dead ends: 64
[2024-11-24 01:45:12,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 01:45:12,759 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 01:45:12,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 59 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 01:45:12,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2024-11-24 01:45:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64.
[2024-11-24 01:45:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-24 01:45:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 93 transitions.
[2024-11-24 01:45:12,792 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 93 transitions. Word has length 22
[2024-11-24 01:45:12,793 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:45:12,793 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 93 transitions.
[2024-11-24 01:45:12,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-24 01:45:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 93 transitions.
[2024-11-24 01:45:12,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-24 01:45:12,794 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:45:12,799 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:45:12,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-24 01:45:12,799 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:45:12,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:45:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2030429345, now seen corresponding path program 1 times
[2024-11-24 01:45:12,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:45:12,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230807520]
[2024-11-24 01:45:12,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:45:12,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:45:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:45:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-24 01:45:12,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:45:12,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230807520]
[2024-11-24 01:45:12,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230807520] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:45:12,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856358982]
[2024-11-24 01:45:12,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:45:12,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:45:12,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:45:12,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:45:12,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-24 01:45:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:45:13,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-24 01:45:13,008 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:45:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-24 01:45:13,091 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:45:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-24 01:45:13,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856358982] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:45:13,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:45:13,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2024-11-24 01:45:13,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285160092]
[2024-11-24 01:45:13,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:45:13,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 01:45:13,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:45:13,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 01:45:13,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-24 01:45:13,218 INFO L87 Difference]: Start difference. First operand 64 states and 93 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2024-11-24 01:45:13,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:45:13,302 INFO L93 Difference]: Finished difference Result 192 states and 298 transitions.
[2024-11-24 01:45:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:45:13,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 36
[2024-11-24 01:45:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:45:13,305 INFO L225 Difference]: With dead ends: 192
[2024-11-24 01:45:13,305 INFO L226 Difference]: Without dead ends: 130
[2024-11-24 01:45:13,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-24 01:45:13,307 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 52 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 01:45:13,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 125 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 01:45:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2024-11-24 01:45:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130.
[2024-11-24 01:45:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 99 states have (on average 1.4848484848484849) internal successors, (147), 99 states have internal predecessors, (147), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2024-11-24 01:45:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 201 transitions.
[2024-11-24 01:45:13,332 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 201 transitions. Word has length 36
[2024-11-24 01:45:13,332 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:45:13,332 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 201 transitions.
[2024-11-24 01:45:13,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2024-11-24 01:45:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 201 transitions.
[2024-11-24 01:45:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2024-11-24 01:45:13,334 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:45:13,334 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:45:13,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-24 01:45:13,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:45:13,539 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:45:13,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:45:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2077574736, now seen corresponding path program 1 times
[2024-11-24 01:45:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:45:13,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104661283]
[2024-11-24 01:45:13,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:45:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:45:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:45:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-24 01:45:13,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:45:13,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104661283]
[2024-11-24 01:45:13,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104661283] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:45:13,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340485076]
[2024-11-24 01:45:13,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:45:13,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:45:13,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:45:13,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:45:13,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-24 01:45:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:45:13,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-24 01:45:13,742 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:45:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-24 01:45:13,836 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:45:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-24 01:45:13,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340485076] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:45:13,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:45:13,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2024-11-24 01:45:13,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363486835]
[2024-11-24 01:45:13,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:45:13,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 01:45:13,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:45:13,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 01:45:13,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-24 01:45:13,953 INFO L87 Difference]: Start difference. First operand 130 states and 201 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2024-11-24 01:45:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:45:14,031 INFO L93 Difference]: Finished difference Result 414 states and 667 transitions.
[2024-11-24 01:45:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:45:14,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 38
[2024-11-24 01:45:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:45:14,034 INFO L225 Difference]: With dead ends: 414
[2024-11-24 01:45:14,034 INFO L226 Difference]: Without dead ends: 286
[2024-11-24 01:45:14,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-24 01:45:14,036 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 47 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 01:45:14,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 141 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 01:45:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states.
[2024-11-24 01:45:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286.
[2024-11-24 01:45:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 222 states have (on average 1.5) internal successors, (333), 222 states have internal predecessors, (333), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2024-11-24 01:45:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 453 transitions.
[2024-11-24 01:45:14,085 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 453 transitions. Word has length 38
[2024-11-24 01:45:14,085 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:45:14,085 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 453 transitions.
[2024-11-24 01:45:14,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2024-11-24 01:45:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 453 transitions.
[2024-11-24 01:45:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2024-11-24 01:45:14,090 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:45:14,090 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:45:14,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-24 01:45:14,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-11-24 01:45:14,291 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:45:14,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:45:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1707539350, now seen corresponding path program 2 times
[2024-11-24 01:45:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:45:14,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522434835]
[2024-11-24 01:45:14,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:45:14,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:45:14,331 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:45:14,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:45:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 63 proven. 4 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked.
[2024-11-24 01:45:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:45:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522434835]
[2024-11-24 01:45:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522434835] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:45:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798930962]
[2024-11-24 01:45:14,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:45:14,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:45:14,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:45:14,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:45:14,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-24 01:45:14,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:45:14,785 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:45:14,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-24 01:45:14,789 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:45:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 20 proven. 72 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-24 01:45:14,954 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:45:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 20 proven. 72 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-24 01:45:15,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798930962] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:45:15,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:45:15,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17
[2024-11-24 01:45:15,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125400470]
[2024-11-24 01:45:15,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:45:15,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-24 01:45:15,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:45:15,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-24 01:45:15,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272
[2024-11-24 01:45:15,224 INFO L87 Difference]: Start difference. First operand 286 states and 453 transitions. Second operand has 17 states, 16 states have (on average 5.0625) internal successors, (81), 17 states have internal predecessors, (81), 14 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24)
[2024-11-24 01:45:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:45:15,551 INFO L93 Difference]: Finished difference Result 884 states and 1441 transitions.
[2024-11-24 01:45:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2024-11-24 01:45:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 17 states have internal predecessors, (81), 14 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) Word has length 84
[2024-11-24 01:45:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:45:15,560 INFO L225 Difference]: With dead ends: 884
[2024-11-24 01:45:15,560 INFO L226 Difference]: Without dead ends: 600
[2024-11-24 01:45:15,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306
[2024-11-24 01:45:15,565 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 243 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-24 01:45:15,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 260 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-24 01:45:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states.
[2024-11-24 01:45:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600.
[2024-11-24 01:45:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 470 states have (on average 1.504255319148936) internal successors, (707), 469 states have internal predecessors, (707), 126 states have call successors, (126), 4 states have call predecessors, (126), 3 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126)
[2024-11-24 01:45:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 959 transitions.
[2024-11-24 01:45:15,664 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 959 transitions. Word has length 84
[2024-11-24 01:45:15,664 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:45:15,665 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 959 transitions.
[2024-11-24 01:45:15,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 17 states have internal predecessors, (81), 14 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24)
[2024-11-24 01:45:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 959 transitions.
[2024-11-24 01:45:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2024-11-24 01:45:15,669 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:45:15,669 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:45:15,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-24 01:45:15,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-11-24 01:45:15,873 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:45:15,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:45:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1290780679, now seen corresponding path program 2 times
[2024-11-24 01:45:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:45:15,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722958494]
[2024-11-24 01:45:15,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:45:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:45:15,894 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:45:15,894 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:45:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked.
[2024-11-24 01:45:16,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:45:16,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722958494]
[2024-11-24 01:45:16,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722958494] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:45:16,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:45:16,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-24 01:45:16,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526588998]
[2024-11-24 01:45:16,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:45:16,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 01:45:16,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:45:16,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 01:45:16,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-24 01:45:16,102 INFO L87 Difference]: Start difference. First operand 600 states and 959 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-24 01:45:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:45:16,203 INFO L93 Difference]: Finished difference Result 602 states and 960 transitions.
[2024-11-24 01:45:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:45:16,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86
[2024-11-24 01:45:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:45:16,205 INFO L225 Difference]: With dead ends: 602
[2024-11-24 01:45:16,205 INFO L226 Difference]: Without dead ends: 0
[2024-11-24 01:45:16,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-24 01:45:16,211 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 01:45:16,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 101 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 01:45:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-24 01:45:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-24 01:45:16,212 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)
[2024-11-24 01:45:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-24 01:45:16,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86
[2024-11-24 01:45:16,213 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:45:16,213 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-24 01:45:16,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-24 01:45:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-24 01:45:16,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-24 01:45:16,220 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-24 01:45:16,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-24 01:45:16,226 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1]
[2024-11-24 01:45:16,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-24 01:45:17,507 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-24 01:45:17,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:45:17 BoogieIcfgContainer
[2024-11-24 01:45:17,521 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-24 01:45:17,521 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-24 01:45:17,521 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-24 01:45:17,522 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-24 01:45:17,523 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:45:11" (3/4) ...
[2024-11-24 01:45:17,525 INFO L146 WitnessPrinter]: Generating witness for correct program
[2024-11-24 01:45:17,530 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2024-11-24 01:45:17,533 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges
[2024-11-24 01:45:17,534 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-24 01:45:17,534 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-24 01:45:17,534 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-24 01:45:17,607 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/witness.graphml
[2024-11-24 01:45:17,608 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/witness.yml
[2024-11-24 01:45:17,608 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-24 01:45:17,609 INFO L158 Benchmark]: Toolchain (without parser) took 6748.91ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 92.4MB in the beginning and 67.4MB in the end (delta: 25.0MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB.
[2024-11-24 01:45:17,609 INFO L158 Benchmark]: CDTParser took 1.59ms. Allocated memory is still 117.4MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:45:17,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.57ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 81.3MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:45:17,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.50ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:45:17,610 INFO L158 Benchmark]: Boogie Preprocessor took 30.03ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 79.0MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:45:17,610 INFO L158 Benchmark]: RCFGBuilder took 308.98ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 68.9MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:45:17,611 INFO L158 Benchmark]: TraceAbstraction took 6029.43ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 68.3MB in the beginning and 71.9MB in the end (delta: -3.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB.
[2024-11-24 01:45:17,611 INFO L158 Benchmark]: Witness Printer took 86.49ms. Allocated memory is still 142.6MB. Free memory was 71.9MB in the beginning and 67.4MB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:45:17,613 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.59ms. Allocated memory is still 117.4MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 256.57ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 81.3MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 30.50ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 30.03ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 79.0MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 308.98ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 68.9MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 6029.43ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 68.3MB in the beginning and 71.9MB in the end (delta: -3.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB.
* Witness Printer took 86.49ms. Allocated memory is still 142.6MB. Free memory was 71.9MB in the beginning and 67.4MB in the end (delta: 4.6MB). There was no memory consumed. 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: 13]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 436 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 405 mSDsluCounter, 914 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 670 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 218 IncrementalHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 244 mSDtfsCounter, 218 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=600occurred in iteration=7, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 461 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 605 ConstructedInterpolants, 0 QuantifiedInterpolants, 1033 SizeOfPredicates, 0 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 1158/1348 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: 18]: Loop Invariant
Derived loop invariant: ((m <= 60) && (n <= 60))
RESULT: Ultimate proved your program to be correct!
[2024-11-24 01:45:17,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89771f5d-530b-41a9-a922-c15ba651a832/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE