./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/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_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/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_fe386076-3575-4ae1-bbb7-9b42ee5884f0/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 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 00:50:47,185 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 00:50:47,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-24 00:50:47,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 00:50:47,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 00:50:47,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 00:50:47,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 00:50:47,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 00:50:47,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 00:50:47,325 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 00:50:47,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 00:50:47,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 00:50:47,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 00:50:47,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 00:50:47,326 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 00:50:47,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 00:50:47,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-24 00:50:47,326 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-24 00:50:47,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-24 00:50:47,326 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-24 00:50:47,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 00:50:47,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 00:50:47,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 00:50:47,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 00:50:47,327 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-24 00:50:47,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-24 00:50:47,327 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 00:50:47,327 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 00:50:47,327 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 00:50:47,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 00:50:47,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:50:47,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 00:50:47,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:50:47,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 00:50:47,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 00:50:47,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:50:47,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 00:50:47,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:50:47,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 00:50:47,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 00:50:47,330 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-24 00:50:47,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 00:50:47,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-24 00:50:47,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 00:50:47,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 00:50:47,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 00:50:47,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 00:50:47,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 00:50:47,331 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_fe386076-3575-4ae1-bbb7-9b42ee5884f0/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 -> 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3
[2024-11-24 00:50:47,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 00:50:47,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 00:50:47,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 00:50:47,646 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 00:50:47,646 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 00:50:47,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c
[2024-11-24 00:50:50,651 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/data/0ee079ab5/ba56a1f19d3642bdb73e2bd4a00b9277/FLAGc26d4178c
[2024-11-24 00:50:50,910 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 00:50:50,910 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c
[2024-11-24 00:50:50,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/data/0ee079ab5/ba56a1f19d3642bdb73e2bd4a00b9277/FLAGc26d4178c
[2024-11-24 00:50:50,932 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/data/0ee079ab5/ba56a1f19d3642bdb73e2bd4a00b9277
[2024-11-24 00:50:50,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 00:50:50,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 00:50:50,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 00:50:50,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 00:50:50,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 00:50:50,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:50:50" (1/1) ...
[2024-11-24 00:50:50,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d00f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:50, skipping insertion in model container
[2024-11-24 00:50:50,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:50:50" (1/1) ...
[2024-11-24 00:50:50,965 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 00:50:51,123 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_fe386076-3575-4ae1-bbb7-9b42ee5884f0/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550]
[2024-11-24 00:50:51,139 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:50:51,147 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 00:50:51,159 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_fe386076-3575-4ae1-bbb7-9b42ee5884f0/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550]
[2024-11-24 00:50:51,164 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:50:51,178 INFO L204 MainTranslator]: Completed translation
[2024-11-24 00:50:51,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51 WrapperNode
[2024-11-24 00:50:51,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 00:50:51,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 00:50:51,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 00:50:51,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 00:50:51,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,209 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42
[2024-11-24 00:50:51,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 00:50:51,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 00:50:51,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 00:50:51,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 00:50:51,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,229 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 00:50:51,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,233 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 00:50:51,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 00:50:51,242 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 00:50:51,242 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 00:50:51,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (1/1) ...
[2024-11-24 00:50:51,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:50:51,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:50:51,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 00:50:51,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 00:50:51,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 00:50:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-24 00:50:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-24 00:50:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 00:50:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 00:50:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 00:50:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-24 00:50:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-24 00:50:51,388 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 00:50:51,390 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 00:50:51,595 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live.
[2024-11-24 00:50:51,597 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 00:50:51,614 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 00:50:51,614 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-24 00:50:51,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:50:51 BoogieIcfgContainer
[2024-11-24 00:50:51,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 00:50:51,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 00:50:51,619 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 00:50:51,625 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 00:50:51,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:50:50" (1/3) ...
[2024-11-24 00:50:51,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52aae5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:50:51, skipping insertion in model container
[2024-11-24 00:50:51,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:50:51" (2/3) ...
[2024-11-24 00:50:51,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52aae5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:50:51, skipping insertion in model container
[2024-11-24 00:50:51,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:50:51" (3/3) ...
[2024-11-24 00:50:51,629 INFO L128 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c
[2024-11-24 00:50:51,648 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 00:50:51,650 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG prodbin-ll_valuebound50.c that has 3 procedures, 26 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-24 00:50:51,729 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 00:50:51,748 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;@384b3fab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 00:50:51,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-24 00:50:51,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-24 00:50:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-24 00:50:51,761 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:50:51,762 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:50:51,763 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:50:51,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:50:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash -6260811, now seen corresponding path program 1 times
[2024-11-24 00:50:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:50:51,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899858952]
[2024-11-24 00:50:51,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:50:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:50:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:50:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-24 00:50:51,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:50:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899858952]
[2024-11-24 00:50:51,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899858952] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:50:51,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056527293]
[2024-11-24 00:50:51,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:50:51,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:50:51,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:50:51,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:50:51,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-24 00:50:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:50:52,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-24 00:50:52,031 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:50:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-24 00:50:52,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 00:50:52,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056527293] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:50:52,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:50:52,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-24 00:50:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182431760]
[2024-11-24 00:50:52,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:50:52,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-24 00:50:52,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:50:52,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-24 00:50:52,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-24 00:50:52,076 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-24 00:50:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:50:52,093 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions.
[2024-11-24 00:50:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-24 00:50:52,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23
[2024-11-24 00:50:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:50:52,104 INFO L225 Difference]: With dead ends: 49
[2024-11-24 00:50:52,104 INFO L226 Difference]: Without dead ends: 22
[2024-11-24 00:50:52,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-24 00:50:52,114 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 00:50:52,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 00:50:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-11-24 00:50:52,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2024-11-24 00:50:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-24 00:50:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2024-11-24 00:50:52,154 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 23
[2024-11-24 00:50:52,154 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:50:52,155 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2024-11-24 00:50:52,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-24 00:50:52,156 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2024-11-24 00:50:52,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-24 00:50:52,157 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:50:52,157 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:50:52,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-24 00:50:52,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:50:52,358 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:50:52,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:50:52,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1203610103, now seen corresponding path program 1 times
[2024-11-24 00:50:52,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:50:52,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027770929]
[2024-11-24 00:50:52,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:50:52,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:50:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-24 00:50:52,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887855569]
[2024-11-24 00:50:52,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:50:52,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:50:52,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:50:52,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:50:52,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-24 00:50:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:50:52,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-24 00:50:52,474 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:50:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-24 00:50:52,773 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:50:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-24 00:50:52,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:50:52,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027770929]
[2024-11-24 00:50:52,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 00:50:52,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887855569]
[2024-11-24 00:50:52,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887855569] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:50:52,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:50:52,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10
[2024-11-24 00:50:52,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579999859]
[2024-11-24 00:50:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:50:52,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 00:50:52,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:50:52,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 00:50:52,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2024-11-24 00:50:52,933 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-24 00:50:53,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:50:53,049 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions.
[2024-11-24 00:50:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 00:50:53,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23
[2024-11-24 00:50:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:50:53,051 INFO L225 Difference]: With dead ends: 32
[2024-11-24 00:50:53,051 INFO L226 Difference]: Without dead ends: 30
[2024-11-24 00:50:53,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2024-11-24 00:50:53,053 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 00:50:53,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 00:50:53,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-11-24 00:50:53,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27.
[2024-11-24 00:50:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-24 00:50:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions.
[2024-11-24 00:50:53,069 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23
[2024-11-24 00:50:53,070 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:50:53,070 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions.
[2024-11-24 00:50:53,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-24 00:50:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions.
[2024-11-24 00:50:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-11-24 00:50:53,071 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:50:53,071 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:50:53,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-24 00:50:53,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:50:53,277 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:50:53,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:50:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash 401861050, now seen corresponding path program 1 times
[2024-11-24 00:50:53,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:50:53,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923914913]
[2024-11-24 00:50:53,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:50:53,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:50:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:50:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-24 00:50:53,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:50:53,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923914913]
[2024-11-24 00:50:53,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923914913] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:50:53,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:50:53,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-24 00:50:53,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712972297]
[2024-11-24 00:50:53,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:50:53,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 00:50:53,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:50:53,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 00:50:53,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-24 00:50:53,512 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-24 00:50:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:50:53,608 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions.
[2024-11-24 00:50:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 00:50:53,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29
[2024-11-24 00:50:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:50:53,611 INFO L225 Difference]: With dead ends: 37
[2024-11-24 00:50:53,611 INFO L226 Difference]: Without dead ends: 30
[2024-11-24 00:50:53,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-24 00:50:53,612 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 00:50:53,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 00:50:53,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-11-24 00:50:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28.
[2024-11-24 00:50:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-24 00:50:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2024-11-24 00:50:53,625 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 29
[2024-11-24 00:50:53,625 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:50:53,625 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2024-11-24 00:50:53,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-24 00:50:53,625 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2024-11-24 00:50:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-24 00:50:53,626 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:50:53,626 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:50:53,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-24 00:50:53,627 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:50:53,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:50:53,627 INFO L85 PathProgramCache]: Analyzing trace with hash 255967682, now seen corresponding path program 1 times
[2024-11-24 00:50:53,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:50:53,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701139789]
[2024-11-24 00:50:53,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:50:53,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:50:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-24 00:50:53,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086984341]
[2024-11-24 00:50:53,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:50:53,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:50:53,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:50:53,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:50:53,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-24 00:50:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:50:53,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-24 00:50:53,751 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:50:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-24 00:50:54,171 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:51:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-24 00:51:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:51:02,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701139789]
[2024-11-24 00:51:02,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 00:51:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086984341]
[2024-11-24 00:51:02,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086984341] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:51:02,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:51:02,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11
[2024-11-24 00:51:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084839463]
[2024-11-24 00:51:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:51:02,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:51:02,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:51:02,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:51:02,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110
[2024-11-24 00:51:02,797 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 00:51:02,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:51:02,992 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions.
[2024-11-24 00:51:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:51:02,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 31
[2024-11-24 00:51:02,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:51:02,994 INFO L225 Difference]: With dead ends: 39
[2024-11-24 00:51:02,994 INFO L226 Difference]: Without dead ends: 37
[2024-11-24 00:51:02,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=39, Invalid=116, Unknown=1, NotChecked=0, Total=156
[2024-11-24 00:51:02,995 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 00:51:02,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 83 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 00:51:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-11-24 00:51:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36.
[2024-11-24 00:51:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-24 00:51:03,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions.
[2024-11-24 00:51:03,003 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 31
[2024-11-24 00:51:03,003 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:51:03,004 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions.
[2024-11-24 00:51:03,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 00:51:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions.
[2024-11-24 00:51:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-24 00:51:03,005 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:51:03,005 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:51:03,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-24 00:51:03,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:03,210 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:51:03,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:51:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash 313225984, now seen corresponding path program 1 times
[2024-11-24 00:51:03,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:51:03,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034190603]
[2024-11-24 00:51:03,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:51:03,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:51:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-24 00:51:03,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430125163]
[2024-11-24 00:51:03,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:51:03,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:03,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:51:03,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:51:03,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-24 00:51:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:51:03,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-11-24 00:51:03,327 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:51:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-24 00:51:03,746 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:51:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-24 00:51:04,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:51:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034190603]
[2024-11-24 00:51:04,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 00:51:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430125163]
[2024-11-24 00:51:04,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430125163] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:51:04,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:51:04,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17
[2024-11-24 00:51:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171818765]
[2024-11-24 00:51:04,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:51:04,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-24 00:51:04,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:51:04,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-24 00:51:04,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272
[2024-11-24 00:51:04,525 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 14 states have internal predecessors, (26), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-24 00:51:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:51:05,262 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions.
[2024-11-24 00:51:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-11-24 00:51:05,263 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 14 states have internal predecessors, (26), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 31
[2024-11-24 00:51:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:51:05,265 INFO L225 Difference]: With dead ends: 61
[2024-11-24 00:51:05,266 INFO L226 Difference]: Without dead ends: 54
[2024-11-24 00:51:05,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506
[2024-11-24 00:51:05,268 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-24 00:51:05,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 151 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-24 00:51:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2024-11-24 00:51:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53.
[2024-11-24 00:51:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 38 states have internal predecessors, (48), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-24 00:51:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions.
[2024-11-24 00:51:05,290 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 31
[2024-11-24 00:51:05,292 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:51:05,292 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions.
[2024-11-24 00:51:05,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 14 states have internal predecessors, (26), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-24 00:51:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions.
[2024-11-24 00:51:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-24 00:51:05,294 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:51:05,294 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:51:05,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-24 00:51:05,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:05,495 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:51:05,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:51:05,495 INFO L85 PathProgramCache]: Analyzing trace with hash 3523909, now seen corresponding path program 1 times
[2024-11-24 00:51:05,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:51:05,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257719822]
[2024-11-24 00:51:05,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:51:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:51:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-24 00:51:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042903583]
[2024-11-24 00:51:05,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:51:05,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:05,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:51:05,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:51:05,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-24 00:51:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:51:05,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-24 00:51:05,603 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:51:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2024-11-24 00:51:05,693 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:51:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2024-11-24 00:51:05,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:51:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257719822]
[2024-11-24 00:51:05,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 00:51:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042903583]
[2024-11-24 00:51:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042903583] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:51:05,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:51:05,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2024-11-24 00:51:05,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369385480]
[2024-11-24 00:51:05,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:51:05,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-24 00:51:05,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:51:05,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-24 00:51:05,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2024-11-24 00:51:05,818 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-24 00:51:05,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:51:05,962 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions.
[2024-11-24 00:51:05,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-24 00:51:05,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37
[2024-11-24 00:51:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:51:05,965 INFO L225 Difference]: With dead ends: 61
[2024-11-24 00:51:05,965 INFO L226 Difference]: Without dead ends: 54
[2024-11-24 00:51:05,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2024-11-24 00:51:05,967 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 00:51:05,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 136 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 00:51:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2024-11-24 00:51:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52.
[2024-11-24 00:51:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-24 00:51:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions.
[2024-11-24 00:51:05,990 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 37
[2024-11-24 00:51:05,990 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:51:05,990 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions.
[2024-11-24 00:51:05,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-24 00:51:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions.
[2024-11-24 00:51:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2024-11-24 00:51:05,994 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:51:05,994 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:51:06,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-24 00:51:06,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:06,195 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:51:06,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:51:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash -236677173, now seen corresponding path program 1 times
[2024-11-24 00:51:06,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:51:06,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036859895]
[2024-11-24 00:51:06,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:51:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:51:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-24 00:51:06,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578096792]
[2024-11-24 00:51:06,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:51:06,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:06,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:51:06,254 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:51:06,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-24 00:51:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:51:06,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-11-24 00:51:06,313 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:51:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-24 00:51:06,754 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:51:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-24 00:51:11,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:51:11,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036859895]
[2024-11-24 00:51:11,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 00:51:11,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578096792]
[2024-11-24 00:51:11,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578096792] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:51:11,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:51:11,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15
[2024-11-24 00:51:11,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546460642]
[2024-11-24 00:51:11,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:51:11,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-24 00:51:11,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:51:11,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-24 00:51:11,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2024-11-24 00:51:11,396 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 15 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2024-11-24 00:51:16,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:51:16,154 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions.
[2024-11-24 00:51:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-11-24 00:51:16,155 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 39
[2024-11-24 00:51:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:51:16,156 INFO L225 Difference]: With dead ends: 76
[2024-11-24 00:51:16,156 INFO L226 Difference]: Without dead ends: 74
[2024-11-24 00:51:16,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380
[2024-11-24 00:51:16,157 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2024-11-24 00:51:16,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 119 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2024-11-24 00:51:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2024-11-24 00:51:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72.
[2024-11-24 00:51:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 states have internal predecessors, (63), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-24 00:51:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions.
[2024-11-24 00:51:16,170 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 39
[2024-11-24 00:51:16,170 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:51:16,170 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions.
[2024-11-24 00:51:16,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2024-11-24 00:51:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions.
[2024-11-24 00:51:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-24 00:51:16,172 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:51:16,172 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:51:16,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-24 00:51:16,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-11-24 00:51:16,372 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:51:16,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:51:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash -955697452, now seen corresponding path program 2 times
[2024-11-24 00:51:16,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:51:16,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096924278]
[2024-11-24 00:51:16,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:51:16,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:51:16,418 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:51:16,418 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-24 00:51:16,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246231549]
[2024-11-24 00:51:16,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:51:16,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:16,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:51:16,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:51:16,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-24 00:51:16,480 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:51:16,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:51:16,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 33 conjuncts are in the unsatisfiable core
[2024-11-24 00:51:16,485 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:51:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-24 00:51:17,424 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:51:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-24 00:51:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:51:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096924278]
[2024-11-24 00:51:23,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 00:51:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246231549]
[2024-11-24 00:51:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246231549] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:51:23,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:51:23,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 23
[2024-11-24 00:51:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989911586]
[2024-11-24 00:51:23,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:51:23,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-24 00:51:23,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:51:23,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-24 00:51:23,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506
[2024-11-24 00:51:23,851 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 23 states, 20 states have (on average 2.0) internal successors, (40), 21 states have internal predecessors, (40), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10)
[2024-11-24 00:51:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:51:34,184 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions.
[2024-11-24 00:51:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-11-24 00:51:34,185 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.0) internal successors, (40), 21 states have internal predecessors, (40), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 47
[2024-11-24 00:51:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:51:34,187 INFO L225 Difference]: With dead ends: 107
[2024-11-24 00:51:34,187 INFO L226 Difference]: Without dead ends: 105
[2024-11-24 00:51:34,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=184, Invalid=808, Unknown=0, NotChecked=0, Total=992
[2024-11-24 00:51:34,188 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2024-11-24 00:51:34,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 169 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2024-11-24 00:51:34,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-11-24 00:51:34,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104.
[2024-11-24 00:51:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 77 states have internal predecessors, (91), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20)
[2024-11-24 00:51:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 131 transitions.
[2024-11-24 00:51:34,222 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 131 transitions. Word has length 47
[2024-11-24 00:51:34,222 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:51:34,222 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 131 transitions.
[2024-11-24 00:51:34,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.0) internal successors, (40), 21 states have internal predecessors, (40), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10)
[2024-11-24 00:51:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 131 transitions.
[2024-11-24 00:51:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-24 00:51:34,224 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:51:34,224 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:51:34,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-11-24 00:51:34,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:34,425 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:51:34,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:51:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1528986721, now seen corresponding path program 3 times
[2024-11-24 00:51:34,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:51:34,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390118065]
[2024-11-24 00:51:34,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:51:34,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:51:34,504 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2024-11-24 00:51:34,508 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-24 00:51:34,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095062613]
[2024-11-24 00:51:34,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:51:34,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:34,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:51:34,515 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:51:34,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-24 00:51:34,572 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-11-24 00:51:34,572 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:51:34,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-11-24 00:51:34,575 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:51:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2024-11-24 00:51:35,029 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:51:35,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:51:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390118065]
[2024-11-24 00:51:35,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 00:51:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095062613]
[2024-11-24 00:51:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095062613] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:51:35,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:51:35,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2024-11-24 00:51:35,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284273842]
[2024-11-24 00:51:35,830 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:51:35,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-24 00:51:35,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:51:35,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-24 00:51:35,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420
[2024-11-24 00:51:35,831 INFO L87 Difference]: Start difference. First operand 104 states and 131 transitions. Second operand has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)
[2024-11-24 00:51:36,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:51:36,088 INFO L93 Difference]: Finished difference Result 129 states and 161 transitions.
[2024-11-24 00:51:36,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-11-24 00:51:36,088 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 55
[2024-11-24 00:51:36,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:51:36,089 INFO L225 Difference]: With dead ends: 129
[2024-11-24 00:51:36,089 INFO L226 Difference]: Without dead ends: 44
[2024-11-24 00:51:36,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506
[2024-11-24 00:51:36,091 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-24 00:51:36,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 133 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-24 00:51:36,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2024-11-24 00:51:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42.
[2024-11-24 00:51:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 30 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-24 00:51:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions.
[2024-11-24 00:51:36,098 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 55
[2024-11-24 00:51:36,098 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:51:36,098 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions.
[2024-11-24 00:51:36,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)
[2024-11-24 00:51:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions.
[2024-11-24 00:51:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-24 00:51:36,099 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:51:36,099 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:51:36,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-24 00:51:36,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:36,300 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:51:36,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:51:36,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1287499749, now seen corresponding path program 2 times
[2024-11-24 00:51:36,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:51:36,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818259740]
[2024-11-24 00:51:36,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:51:36,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:51:36,326 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:51:36,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-24 00:51:36,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496159369]
[2024-11-24 00:51:36,327 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:51:36,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:51:36,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:51:36,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:51:36,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-24 00:51:36,388 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:51:36,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:51:36,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-11-24 00:51:36,391 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:51:38,112 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.
[2024-11-24 00:51:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-11-24 00:51:38,648 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:52:24,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:52:24,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818259740]
[2024-11-24 00:52:24,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 00:52:24,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496159369]
[2024-11-24 00:52:24,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496159369] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:52:24,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:52:24,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19
[2024-11-24 00:52:24,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98418423]
[2024-11-24 00:52:24,933 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:52:24,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-11-24 00:52:24,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:52:24,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-11-24 00:52:24,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992
[2024-11-24 00:52:24,934 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7)
[2024-11-24 00:52:25,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:52:25,763 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions.
[2024-11-24 00:52:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-11-24 00:52:25,763 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 55
[2024-11-24 00:52:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:52:25,764 INFO L225 Difference]: With dead ends: 55
[2024-11-24 00:52:25,764 INFO L226 Difference]: Without dead ends: 53
[2024-11-24 00:52:25,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056
[2024-11-24 00:52:25,766 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-24 00:52:25,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 106 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-24 00:52:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2024-11-24 00:52:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50.
[2024-11-24 00:52:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-24 00:52:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions.
[2024-11-24 00:52:25,774 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 55
[2024-11-24 00:52:25,774 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:52:25,774 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions.
[2024-11-24 00:52:25,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7)
[2024-11-24 00:52:25,774 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions.
[2024-11-24 00:52:25,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2024-11-24 00:52:25,777 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:52:25,777 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:52:25,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-24 00:52:25,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-24 00:52:25,978 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:52:25,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:52:25,978 INFO L85 PathProgramCache]: Analyzing trace with hash 390184228, now seen corresponding path program 3 times
[2024-11-24 00:52:25,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:52:25,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619067778]
[2024-11-24 00:52:25,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:52:25,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:52:26,031 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-11-24 00:52:26,032 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-24 00:52:26,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782335450]
[2024-11-24 00:52:26,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:52:26,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:52:26,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:52:26,037 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:52:26,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-24 00:52:26,121 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-11-24 00:52:26,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:52:26,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 42 conjuncts are in the unsatisfiable core
[2024-11-24 00:52:26,132 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:52:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 15 proven. 58 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2024-11-24 00:52:29,078 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:53:49,102 WARN L286 SmtUtils]: Spent 11.54s on a formula simplification that was a NOOP. DAG size: 362 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:54:15,435 WARN L286 SmtUtils]: Spent 10.88s on a formula simplification that was a NOOP. DAG size: 362 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:54:55,582 WARN L286 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 907 DAG size of output: 904 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:55:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 15 proven. 58 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2024-11-24 00:55:05,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:55:05,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619067778]
[2024-11-24 00:55:05,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 00:55:05,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782335450]
[2024-11-24 00:55:05,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782335450] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:55:05,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:55:05,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37
[2024-11-24 00:55:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803528677]
[2024-11-24 00:55:05,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:55:05,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2024-11-24 00:55:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:55:05,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2024-11-24 00:55:05,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1102, Unknown=1, NotChecked=0, Total=1332
[2024-11-24 00:55:05,499 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 37 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 34 states have internal predecessors, (54), 13 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14)
[2024-11-24 00:55:29,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]
[2024-11-24 00:56:17,292 WARN L286 SmtUtils]: Spent 13.69s on a formula simplification. DAG size of input: 557 DAG size of output: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:56:51,383 WARN L286 SmtUtils]: Spent 14.28s on a formula simplification. DAG size of input: 546 DAG size of output: 33 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:57:13,856 WARN L286 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 274 DAG size of output: 61 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:57:43,003 WARN L286 SmtUtils]: Spent 8.58s on a formula simplification. DAG size of input: 267 DAG size of output: 59 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-24 00:58:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:58:25,226 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions.
[2024-11-24 00:58:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2024-11-24 00:58:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 34 states have internal predecessors, (54), 13 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) Word has length 63
[2024-11-24 00:58:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:58:25,228 INFO L225 Difference]: With dead ends: 84
[2024-11-24 00:58:25,228 INFO L226 Difference]: Without dead ends: 82
[2024-11-24 00:58:25,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 261.4s TimeCoverageRelationStatistics Valid=516, Invalid=2021, Unknown=13, NotChecked=0, Total=2550
[2024-11-24 00:58:25,229 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 63 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 44 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time
[2024-11-24 00:58:25,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 241 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 591 Invalid, 2 Unknown, 0 Unchecked, 18.1s Time]
[2024-11-24 00:58:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2024-11-24 00:58:25,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82.
[2024-11-24 00:58:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 60 states have internal predecessors, (60), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-24 00:58:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions.
[2024-11-24 00:58:25,264 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 63
[2024-11-24 00:58:25,265 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:58:25,265 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions.
[2024-11-24 00:58:25,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 34 states have internal predecessors, (54), 13 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14)
[2024-11-24 00:58:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions.
[2024-11-24 00:58:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2024-11-24 00:58:25,267 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:58:25,267 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:58:25,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-11-24 00:58:25,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:58:25,468 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:58:25,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:58:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1058603933, now seen corresponding path program 4 times
[2024-11-24 00:58:25,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:58:25,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224544442]
[2024-11-24 00:58:25,468 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 00:58:25,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:58:25,663 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 00:58:25,663 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:58:28,693 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked.
[2024-11-24 00:58:28,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:58:28,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224544442]
[2024-11-24 00:58:28,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224544442] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:58:28,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:58:28,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2024-11-24 00:58:28,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716108931]
[2024-11-24 00:58:28,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:58:28,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-24 00:58:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:58:28,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-24 00:58:28,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272
[2024-11-24 00:58:28,695 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10)
[2024-11-24 00:58:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:58:29,213 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions.
[2024-11-24 00:58:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2024-11-24 00:58:29,214 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 119
[2024-11-24 00:58:29,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:58:29,215 INFO L225 Difference]: With dead ends: 86
[2024-11-24 00:58:29,215 INFO L226 Difference]: Without dead ends: 0
[2024-11-24 00:58:29,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756
[2024-11-24 00:58:29,217 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-24 00:58:29,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 186 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-24 00:58:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-24 00:58:29,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-24 00:58:29,218 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 00:58:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-24 00:58:29,218 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 119
[2024-11-24 00:58:29,218 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:58:29,218 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-24 00:58:29,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10)
[2024-11-24 00:58:29,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-24 00:58:29,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-24 00:58:29,223 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-24 00:58:29,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-24 00:58:29,229 INFO L422 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1]
[2024-11-24 00:58:29,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-24 00:58:30,945 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-24 00:58:30,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:58:30 BoogieIcfgContainer
[2024-11-24 00:58:30,961 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-24 00:58:30,962 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-24 00:58:30,962 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-24 00:58:30,963 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-24 00:58:30,963 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:50:51" (3/4) ...
[2024-11-24 00:58:30,966 INFO L146 WitnessPrinter]: Generating witness for correct program
[2024-11-24 00:58:30,973 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not
[2024-11-24 00:58:30,973 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2024-11-24 00:58:30,977 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges
[2024-11-24 00:58:30,977 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-24 00:58:30,977 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-24 00:58:30,977 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-24 00:58:31,059 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/witness.graphml
[2024-11-24 00:58:31,060 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/witness.yml
[2024-11-24 00:58:31,060 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-24 00:58:31,061 INFO L158 Benchmark]: Toolchain (without parser) took 460125.06ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 93.0MB in the beginning and 212.5MB in the end (delta: -119.6MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB.
[2024-11-24 00:58:31,061 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:58:31,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.87ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 81.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 00:58:31,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.12ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:58:31,062 INFO L158 Benchmark]: Boogie Preprocessor took 30.09ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 00:58:31,062 INFO L158 Benchmark]: RCFGBuilder took 374.70ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 69.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 00:58:31,063 INFO L158 Benchmark]: TraceAbstraction took 459343.03ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 68.8MB in the beginning and 217.8MB in the end (delta: -149.0MB). Peak memory consumption was 136.8MB. Max. memory is 16.1GB.
[2024-11-24 00:58:31,063 INFO L158 Benchmark]: Witness Printer took 97.73ms. Allocated memory is still 268.4MB. Free memory was 217.8MB in the beginning and 212.5MB in the end (delta: 5.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:58:31,065 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 239.87ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 81.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 29.12ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 30.09ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 374.70ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 69.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 459343.03ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 68.8MB in the beginning and 217.8MB in the end (delta: -149.0MB). Peak memory consumption was 136.8MB. Max. memory is 16.1GB.
* Witness Printer took 97.73ms. Allocated memory is still 268.4MB. Free memory was 217.8MB in the beginning and 212.5MB in the end (delta: 5.3MB). 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: 15]: 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 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 457.5s, OverallIterations: 12, TraceHistogramMax: 13, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 217.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 24.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 1480 SdHoareTripleChecker+Invalid, 24.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1253 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2328 IncrementalHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 227 mSDtfsCounter, 2328 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 792 GetRequests, 543 SyntacticMatches, 20 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 319.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=8, InterpolantAutomatonStates: 166, 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, 12 MinimizatonAttempts, 17 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 235.8s InterpolantComputationTime, 956 NumberOfCodeBlocks, 948 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 826 ConstructedInterpolants, 16 QuantifiedInterpolants, 20794 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1006 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 1031/1242 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: 34]: Loop Invariant
Derived loop invariant: (((((0 <= y) && (1 <= b)) && (a <= 50)) && ((z + ((__int128) x * y)) == ((long long) a * b))) && (0 <= a))
RESULT: Ultimate proved your program to be correct!
[2024-11-24 00:58:31,274 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process
[2024-11-24 00:58:31,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe386076-3575-4ae1-bbb7-9b42ee5884f0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE