./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array9_pattern.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array9_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX --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 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 19:00:13,067 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 19:00:13,166 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 19:00:13,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 19:00:13,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 19:00:13,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 19:00:13,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 19:00:13,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 19:00:13,215 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 19:00:13,218 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 19:00:13,218 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 19:00:13,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 19:00:13,219 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 19:00:13,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 19:00:13,220 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 19:00:13,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 19:00:13,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 19:00:13,222 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 19:00:13,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 19:00:13,222 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 19:00:13,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 19:00:13,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 19:00:13,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 19:00:13,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 19:00:13,228 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 19:00:13,229 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 19:00:13,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 19:00:13,229 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 19:00:13,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 19:00:13,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 19:00:13,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 19:00:13,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 19:00:13,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 19:00:13,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 19:00:13,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 19:00:13,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 19:00:13,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 19:00:13,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 19:00:13,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 19:00:13,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 19:00:13,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 19:00:13,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 19:00:13,238 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b
[2024-11-08 19:00:13,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 19:00:13,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 19:00:13,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 19:00:13,561 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 19:00:13,562 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 19:00:13,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-patterns/array9_pattern.c
Unable to find full path for "g++"
[2024-11-08 19:00:15,697 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 19:00:15,898 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 19:00:15,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/sv-benchmarks/c/array-patterns/array9_pattern.c
[2024-11-08 19:00:15,907 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/data/f8ab429b8/1c8596a126544e4c90049df1df63becc/FLAG4884a321e
[2024-11-08 19:00:15,922 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/data/f8ab429b8/1c8596a126544e4c90049df1df63becc
[2024-11-08 19:00:15,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 19:00:15,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 19:00:15,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 19:00:15,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 19:00:15,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 19:00:15,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:00:15" (1/1) ...
[2024-11-08 19:00:15,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b99303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:15, skipping insertion in model container
[2024-11-08 19:00:15,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:00:15" (1/1) ...
[2024-11-08 19:00:15,966 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 19:00:16,144 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_399a3078-a5e9-4cf0-a236-23c4905f1215/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365]
[2024-11-08 19:00:16,171 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 19:00:16,180 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 19:00:16,194 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_399a3078-a5e9-4cf0-a236-23c4905f1215/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365]
[2024-11-08 19:00:16,204 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 19:00:16,222 INFO L204 MainTranslator]: Completed translation
[2024-11-08 19:00:16,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16 WrapperNode
[2024-11-08 19:00:16,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 19:00:16,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 19:00:16,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 19:00:16,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 19:00:16,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,258 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82
[2024-11-08 19:00:16,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 19:00:16,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 19:00:16,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 19:00:16,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 19:00:16,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,275 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,290 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 4, 3]. 44 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2].
[2024-11-08 19:00:16,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 19:00:16,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 19:00:16,308 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 19:00:16,308 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 19:00:16,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (1/1) ...
[2024-11-08 19:00:16,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 19:00:16,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:16,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 19:00:16,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 19:00:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 19:00:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-08 19:00:16,374 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-08 19:00:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 19:00:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-08 19:00:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-08 19:00:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-08 19:00:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-08 19:00:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-08 19:00:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-08 19:00:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 19:00:16,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 19:00:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-08 19:00:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-08 19:00:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-08 19:00:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-08 19:00:16,459 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 19:00:16,460 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 19:00:16,650 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live.
[2024-11-08 19:00:16,650 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 19:00:16,670 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 19:00:16,670 INFO L316 CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-08 19:00:16,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:00:16 BoogieIcfgContainer
[2024-11-08 19:00:16,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 19:00:16,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 19:00:16,674 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 19:00:16,678 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 19:00:16,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:00:15" (1/3) ...
[2024-11-08 19:00:16,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188a33a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:00:16, skipping insertion in model container
[2024-11-08 19:00:16,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16" (2/3) ...
[2024-11-08 19:00:16,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188a33a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:00:16, skipping insertion in model container
[2024-11-08 19:00:16,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:00:16" (3/3) ...
[2024-11-08 19:00:16,682 INFO L112 eAbstractionObserver]: Analyzing ICFG array9_pattern.c
[2024-11-08 19:00:16,698 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 19:00:16,698 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 19:00:16,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 19:00:16,770 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;@7acbd9a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 19:00:16,771 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 19:00:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:16,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-11-08 19:00:16,780 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:16,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:16,782 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:16,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash 114520094, now seen corresponding path program 1 times
[2024-11-08 19:00:16,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:16,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982455432]
[2024-11-08 19:00:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:16,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:16,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 19:00:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:17,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982455432]
[2024-11-08 19:00:17,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982455432] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:00:17,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:00:17,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 19:00:17,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572197011]
[2024-11-08 19:00:17,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:00:17,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-08 19:00:17,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:17,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-08 19:00:17,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 19:00:17,048 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 19:00:17,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:17,072 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions.
[2024-11-08 19:00:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-08 19:00:17,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16
[2024-11-08 19:00:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:17,084 INFO L225 Difference]: With dead ends: 53
[2024-11-08 19:00:17,084 INFO L226 Difference]: Without dead ends: 24
[2024-11-08 19:00:17,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 19:00:17,094 INFO L432 NwaCegarLoop]: 34 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, 34 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
[2024-11-08 19:00:17,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 19:00:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-11-08 19:00:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2024-11-08 19:00:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions.
[2024-11-08 19:00:17,137 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 16
[2024-11-08 19:00:17,137 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:17,138 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions.
[2024-11-08 19:00:17,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 19:00:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions.
[2024-11-08 19:00:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-11-08 19:00:17,140 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:17,140 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:17,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 19:00:17,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:17,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2091851997, now seen corresponding path program 1 times
[2024-11-08 19:00:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:17,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307721867]
[2024-11-08 19:00:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:17,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:17,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 19:00:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:17,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2024-11-08 19:00:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 19:00:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307721867]
[2024-11-08 19:00:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307721867] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:17,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362387150]
[2024-11-08 19:00:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:17,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:17,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:17,829 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:17,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 19:00:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:17,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:17,960 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 19:00:18,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:00:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362387150] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:00:18,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:00:18,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10
[2024-11-08 19:00:18,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313314906]
[2024-11-08 19:00:18,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:00:18,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 19:00:18,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 19:00:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2024-11-08 19:00:18,176 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:18,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:18,269 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions.
[2024-11-08 19:00:18,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 19:00:18,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25
[2024-11-08 19:00:18,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:18,273 INFO L225 Difference]: With dead ends: 32
[2024-11-08 19:00:18,273 INFO L226 Difference]: Without dead ends: 28
[2024-11-08 19:00:18,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2024-11-08 19:00:18,276 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:18,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 101 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:00:18,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2024-11-08 19:00:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26.
[2024-11-08 19:00:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions.
[2024-11-08 19:00:18,291 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 25
[2024-11-08 19:00:18,291 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:18,291 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions.
[2024-11-08 19:00:18,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions.
[2024-11-08 19:00:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2024-11-08 19:00:18,294 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:18,295 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:18,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 19:00:18,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:18,496 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:18,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash 20824834, now seen corresponding path program 1 times
[2024-11-08 19:00:18,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:18,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694965879]
[2024-11-08 19:00:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:18,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:18,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 19:00:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:18,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2024-11-08 19:00:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:18,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:18,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694965879]
[2024-11-08 19:00:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694965879] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:00:18,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:00:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 19:00:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031706012]
[2024-11-08 19:00:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:00:18,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 19:00:18,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 19:00:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:00:18,666 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:18,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:18,795 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions.
[2024-11-08 19:00:18,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 19:00:18,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27
[2024-11-08 19:00:18,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:18,797 INFO L225 Difference]: With dead ends: 48
[2024-11-08 19:00:18,798 INFO L226 Difference]: Without dead ends: 28
[2024-11-08 19:00:18,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:00:18,800 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:18,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 59 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:00:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2024-11-08 19:00:18,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2024-11-08 19:00:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions.
[2024-11-08 19:00:18,810 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 27
[2024-11-08 19:00:18,812 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:18,812 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions.
[2024-11-08 19:00:18,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions.
[2024-11-08 19:00:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-11-08 19:00:18,814 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:18,814 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:18,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-08 19:00:18,814 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:18,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:18,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1380700707, now seen corresponding path program 1 times
[2024-11-08 19:00:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:18,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226509562]
[2024-11-08 19:00:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:18,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 19:00:18,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952266213]
[2024-11-08 19:00:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:18,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:18,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:18,886 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:18,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 19:00:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:18,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:18,991 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:19,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 19:00:19,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 19:00:19,755 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size
[2024-11-08 19:00:19,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 33
[2024-11-08 19:00:19,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2024-11-08 19:00:19,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-11-08 19:00:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:20,017 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:20,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27
[2024-11-08 19:00:20,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46
[2024-11-08 19:00:20,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33
[2024-11-08 19:00:20,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 49
[2024-11-08 19:00:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 19:00:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226509562]
[2024-11-08 19:00:20,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 19:00:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952266213]
[2024-11-08 19:00:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952266213] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:00:20,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:00:20,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32
[2024-11-08 19:00:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411167484]
[2024-11-08 19:00:20,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:20,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2024-11-08 19:00:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2024-11-08 19:00:20,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992
[2024-11-08 19:00:20,975 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 32 states, 32 states have (on average 1.46875) internal successors, (47), 28 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 19:00:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:23,508 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions.
[2024-11-08 19:00:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2024-11-08 19:00:23,510 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.46875) internal successors, (47), 28 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29
[2024-11-08 19:00:23,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:23,512 INFO L225 Difference]: With dead ends: 112
[2024-11-08 19:00:23,513 INFO L226 Difference]: Without dead ends: 88
[2024-11-08 19:00:23,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=723, Invalid=3437, Unknown=0, NotChecked=0, Total=4160
[2024-11-08 19:00:23,517 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 152 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:23,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 297 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-08 19:00:23,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2024-11-08 19:00:23,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 55.
[2024-11-08 19:00:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 19:00:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions.
[2024-11-08 19:00:23,550 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 29
[2024-11-08 19:00:23,550 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:23,550 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions.
[2024-11-08 19:00:23,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.46875) internal successors, (47), 28 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 19:00:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions.
[2024-11-08 19:00:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-08 19:00:23,552 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:23,553 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:23,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 19:00:23,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:23,754 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:23,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:23,754 INFO L85 PathProgramCache]: Analyzing trace with hash 372985336, now seen corresponding path program 2 times
[2024-11-08 19:00:23,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:23,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581202424]
[2024-11-08 19:00:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:23,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:23,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 19:00:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:23,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2024-11-08 19:00:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:23,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:23,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581202424]
[2024-11-08 19:00:23,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581202424] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:23,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834134683]
[2024-11-08 19:00:23,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 19:00:23,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:23,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:23,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:23,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 19:00:23,989 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 19:00:23,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:00:23,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:23,993 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:24,070 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:24,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834134683] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:00:24,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:00:24,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11
[2024-11-08 19:00:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485427211]
[2024-11-08 19:00:24,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:24,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 19:00:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 19:00:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2024-11-08 19:00:24,149 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:24,296 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions.
[2024-11-08 19:00:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-08 19:00:24,297 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31
[2024-11-08 19:00:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:24,298 INFO L225 Difference]: With dead ends: 92
[2024-11-08 19:00:24,298 INFO L226 Difference]: Without dead ends: 52
[2024-11-08 19:00:24,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210
[2024-11-08 19:00:24,299 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:24,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 100 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:00:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2024-11-08 19:00:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45.
[2024-11-08 19:00:24,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 19:00:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions.
[2024-11-08 19:00:24,311 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 31
[2024-11-08 19:00:24,311 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:24,311 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions.
[2024-11-08 19:00:24,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions.
[2024-11-08 19:00:24,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-08 19:00:24,313 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:24,313 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:24,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-08 19:00:24,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:24,514 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:24,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:24,514 INFO L85 PathProgramCache]: Analyzing trace with hash 87265282, now seen corresponding path program 3 times
[2024-11-08 19:00:24,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:24,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436703580]
[2024-11-08 19:00:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:24,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:24,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 19:00:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:24,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2024-11-08 19:00:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:24,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:24,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436703580]
[2024-11-08 19:00:24,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436703580] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227350389]
[2024-11-08 19:00:24,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 19:00:24,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:24,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:24,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:24,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 19:00:24,715 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-11-08 19:00:24,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:00:24,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:24,718 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:24,787 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:24,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227350389] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:00:24,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:00:24,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11
[2024-11-08 19:00:24,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635573208]
[2024-11-08 19:00:24,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:24,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 19:00:24,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:24,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 19:00:24,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2024-11-08 19:00:24,857 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:24,977 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions.
[2024-11-08 19:00:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 19:00:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31
[2024-11-08 19:00:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:24,978 INFO L225 Difference]: With dead ends: 57
[2024-11-08 19:00:24,978 INFO L226 Difference]: Without dead ends: 36
[2024-11-08 19:00:24,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2024-11-08 19:00:24,979 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:24,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 92 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:00:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-11-08 19:00:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34.
[2024-11-08 19:00:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions.
[2024-11-08 19:00:24,987 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 31
[2024-11-08 19:00:24,988 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:24,988 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions.
[2024-11-08 19:00:24,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions.
[2024-11-08 19:00:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2024-11-08 19:00:24,989 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:24,989 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:25,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 19:00:25,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:25,190 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:25,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1752372573, now seen corresponding path program 4 times
[2024-11-08 19:00:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:25,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575332572]
[2024-11-08 19:00:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 19:00:25,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965939810]
[2024-11-08 19:00:25,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-08 19:00:25,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:25,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:25,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:25,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 19:00:25,305 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-08 19:00:25,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:00:25,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 58 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:25,314 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:25,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:00:25,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 19:00:25,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 19:00:25,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 19:00:26,219 INFO L349 Elim1Store]: treesize reduction 104, result has 30.2 percent of original size
[2024-11-08 19:00:26,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 57
[2024-11-08 19:00:26,620 INFO L349 Elim1Store]: treesize reduction 104, result has 45.0 percent of original size
[2024-11-08 19:00:26,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 63 treesize of output 106
[2024-11-08 19:00:27,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:27,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22
[2024-11-08 19:00:27,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:27,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 21
[2024-11-08 19:00:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:27,293 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:27,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:27,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575332572]
[2024-11-08 19:00:27,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 19:00:27,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965939810]
[2024-11-08 19:00:27,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965939810] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:27,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:00:27,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2024-11-08 19:00:27,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375697092]
[2024-11-08 19:00:27,908 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:27,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 19:00:27,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 19:00:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056
[2024-11-08 19:00:27,912 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:28,583 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions.
[2024-11-08 19:00:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-11-08 19:00:28,584 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33
[2024-11-08 19:00:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:28,584 INFO L225 Difference]: With dead ends: 72
[2024-11-08 19:00:28,585 INFO L226 Difference]: Without dead ends: 68
[2024-11-08 19:00:28,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=243, Invalid=1239, Unknown=0, NotChecked=0, Total=1482
[2024-11-08 19:00:28,587 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:28,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 149 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 19:00:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2024-11-08 19:00:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50.
[2024-11-08 19:00:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 19:00:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions.
[2024-11-08 19:00:28,602 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 33
[2024-11-08 19:00:28,602 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:28,603 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions.
[2024-11-08 19:00:28,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:28,603 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions.
[2024-11-08 19:00:28,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2024-11-08 19:00:28,604 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:28,604 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:28,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-08 19:00:28,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:28,808 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:28,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:28,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2010538011, now seen corresponding path program 1 times
[2024-11-08 19:00:28,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:28,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773076681]
[2024-11-08 19:00:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:28,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 19:00:28,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115355876]
[2024-11-08 19:00:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:28,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:28,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:28,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:28,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 19:00:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:28,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 54 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:28,934 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:29,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:00:29,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 19:00:29,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 19:00:29,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 19:00:29,817 INFO L349 Elim1Store]: treesize reduction 104, result has 30.2 percent of original size
[2024-11-08 19:00:29,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 57
[2024-11-08 19:00:30,223 INFO L349 Elim1Store]: treesize reduction 88, result has 40.9 percent of original size
[2024-11-08 19:00:30,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 73
[2024-11-08 19:00:30,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:30,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 63
[2024-11-08 19:00:30,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:30,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 39
[2024-11-08 19:00:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:30,944 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:31,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:31,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773076681]
[2024-11-08 19:00:31,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 19:00:31,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115355876]
[2024-11-08 19:00:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115355876] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:31,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:00:31,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22
[2024-11-08 19:00:31,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210103379]
[2024-11-08 19:00:31,619 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:31,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-08 19:00:31,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:31,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-08 19:00:31,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930
[2024-11-08 19:00:31,621 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:32,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:32,496 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions.
[2024-11-08 19:00:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-11-08 19:00:32,497 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33
[2024-11-08 19:00:32,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:32,500 INFO L225 Difference]: With dead ends: 76
[2024-11-08 19:00:32,501 INFO L226 Difference]: Without dead ends: 72
[2024-11-08 19:00:32,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=206, Invalid=1126, Unknown=0, NotChecked=0, Total=1332
[2024-11-08 19:00:32,503 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:32,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 173 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-08 19:00:32,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2024-11-08 19:00:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50.
[2024-11-08 19:00:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 19:00:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions.
[2024-11-08 19:00:32,523 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 33
[2024-11-08 19:00:32,523 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:32,523 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions.
[2024-11-08 19:00:32,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions.
[2024-11-08 19:00:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-11-08 19:00:32,526 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:32,526 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:32,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-08 19:00:32,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:32,727 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:32,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash -102322184, now seen corresponding path program 5 times
[2024-11-08 19:00:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:32,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36600158]
[2024-11-08 19:00:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:32,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 19:00:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:32,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2024-11-08 19:00:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:32,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:32,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36600158]
[2024-11-08 19:00:32,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36600158] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:32,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304302912]
[2024-11-08 19:00:32,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-08 19:00:32,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:32,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:32,961 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:32,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 19:00:33,052 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2024-11-08 19:00:33,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:00:33,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:33,054 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:33,145 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:33,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304302912] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:00:33,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:00:33,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14
[2024-11-08 19:00:33,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106300801]
[2024-11-08 19:00:33,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:33,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 19:00:33,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:33,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 19:00:33,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182
[2024-11-08 19:00:33,236 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:33,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:33,418 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions.
[2024-11-08 19:00:33,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-08 19:00:33,418 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35
[2024-11-08 19:00:33,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:33,419 INFO L225 Difference]: With dead ends: 80
[2024-11-08 19:00:33,419 INFO L226 Difference]: Without dead ends: 76
[2024-11-08 19:00:33,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380
[2024-11-08 19:00:33,421 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:33,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 112 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:00:33,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2024-11-08 19:00:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 60.
[2024-11-08 19:00:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 19:00:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions.
[2024-11-08 19:00:33,445 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 35
[2024-11-08 19:00:33,445 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:33,445 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions.
[2024-11-08 19:00:33,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions.
[2024-11-08 19:00:33,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-11-08 19:00:33,446 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:33,446 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:33,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-11-08 19:00:33,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:33,647 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:33,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:33,647 INFO L85 PathProgramCache]: Analyzing trace with hash 198612866, now seen corresponding path program 6 times
[2024-11-08 19:00:33,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:33,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596493912]
[2024-11-08 19:00:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:33,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:33,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 19:00:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:33,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2024-11-08 19:00:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:33,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:33,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596493912]
[2024-11-08 19:00:33,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596493912] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:33,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974693437]
[2024-11-08 19:00:33,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-08 19:00:33,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:33,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:33,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:33,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 19:00:33,940 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2024-11-08 19:00:33,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:00:33,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:33,943 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:34,045 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:34,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974693437] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:00:34,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:00:34,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14
[2024-11-08 19:00:34,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674776951]
[2024-11-08 19:00:34,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:34,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 19:00:34,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:34,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 19:00:34,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182
[2024-11-08 19:00:34,121 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:34,269 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions.
[2024-11-08 19:00:34,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 19:00:34,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35
[2024-11-08 19:00:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:34,270 INFO L225 Difference]: With dead ends: 83
[2024-11-08 19:00:34,270 INFO L226 Difference]: Without dead ends: 71
[2024-11-08 19:00:34,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240
[2024-11-08 19:00:34,271 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 62 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:34,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:00:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2024-11-08 19:00:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65.
[2024-11-08 19:00:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 19:00:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions.
[2024-11-08 19:00:34,292 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 35
[2024-11-08 19:00:34,292 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:34,292 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions.
[2024-11-08 19:00:34,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions.
[2024-11-08 19:00:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-08 19:00:34,293 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:34,293 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:34,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-08 19:00:34,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:34,494 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:34,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash 248379229, now seen corresponding path program 7 times
[2024-11-08 19:00:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969338668]
[2024-11-08 19:00:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:34,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 19:00:34,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506929712]
[2024-11-08 19:00:34,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-08 19:00:34,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:34,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:34,536 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:34,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 19:00:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:34,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 60 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:34,632 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:34,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 19:00:34,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:00:34,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 19:00:34,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 19:00:34,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:34,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-11-08 19:00:34,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21
[2024-11-08 19:00:35,368 INFO L349 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size
[2024-11-08 19:00:35,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43
[2024-11-08 19:00:35,699 INFO L349 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size
[2024-11-08 19:00:35,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 41 treesize of output 40
[2024-11-08 19:00:36,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:36,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 31
[2024-11-08 19:00:36,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:36,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 37
[2024-11-08 19:00:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:36,697 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:37,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:37,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969338668]
[2024-11-08 19:00:37,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 19:00:37,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506929712]
[2024-11-08 19:00:37,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506929712] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:37,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:00:37,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2024-11-08 19:00:37,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712294094]
[2024-11-08 19:00:37,186 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:37,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-11-08 19:00:37,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:37,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-11-08 19:00:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756
[2024-11-08 19:00:37,187 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:37,872 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions.
[2024-11-08 19:00:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-11-08 19:00:37,873 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37
[2024-11-08 19:00:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:37,873 INFO L225 Difference]: With dead ends: 93
[2024-11-08 19:00:37,874 INFO L226 Difference]: Without dead ends: 89
[2024-11-08 19:00:37,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056
[2024-11-08 19:00:37,875 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:37,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 233 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-08 19:00:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2024-11-08 19:00:37,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78.
[2024-11-08 19:00:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-08 19:00:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions.
[2024-11-08 19:00:37,903 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 37
[2024-11-08 19:00:37,903 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:37,903 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions.
[2024-11-08 19:00:37,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions.
[2024-11-08 19:00:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-08 19:00:37,904 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:37,904 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:37,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-08 19:00:38,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-11-08 19:00:38,105 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:38,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:38,106 INFO L85 PathProgramCache]: Analyzing trace with hash -762738021, now seen corresponding path program 2 times
[2024-11-08 19:00:38,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:38,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569021740]
[2024-11-08 19:00:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:38,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 19:00:38,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128616082]
[2024-11-08 19:00:38,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 19:00:38,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:38,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:38,147 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:38,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 19:00:38,251 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 19:00:38,251 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:00:38,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 57 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:38,262 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:38,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:00:38,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 19:00:38,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 19:00:38,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 19:00:38,525 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:38,526 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:38,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:38,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30
[2024-11-08 19:00:38,546 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:38,547 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:38,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21
[2024-11-08 19:00:39,219 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:39,220 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:39,317 INFO L349 Elim1Store]: treesize reduction 170, result has 31.2 percent of original size
[2024-11-08 19:00:39,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 70 treesize of output 95
[2024-11-08 19:00:39,746 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:39,747 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:39,861 INFO L349 Elim1Store]: treesize reduction 146, result has 40.9 percent of original size
[2024-11-08 19:00:39,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 70 treesize of output 119
[2024-11-08 19:00:41,679 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:41,682 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:41,683 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:41,685 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:41,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:41,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 185 treesize of output 157
[2024-11-08 19:00:41,738 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:41,744 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:41,749 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:41,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:41,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 138 treesize of output 130
[2024-11-08 19:00:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:44,142 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:49,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569021740]
[2024-11-08 19:00:49,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 19:00:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128616082]
[2024-11-08 19:00:49,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128616082] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:49,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:00:49,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22
[2024-11-08 19:00:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661794885]
[2024-11-08 19:00:49,701 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:49,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-08 19:00:49,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-08 19:00:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=831, Unknown=1, NotChecked=0, Total=992
[2024-11-08 19:00:49,706 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:51,169 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions.
[2024-11-08 19:00:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-11-08 19:00:51,170 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37
[2024-11-08 19:00:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:51,171 INFO L225 Difference]: With dead ends: 99
[2024-11-08 19:00:51,171 INFO L226 Difference]: Without dead ends: 95
[2024-11-08 19:00:51,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=253, Invalid=1228, Unknown=1, NotChecked=0, Total=1482
[2024-11-08 19:00:51,172 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 33 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:51,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 246 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-08 19:00:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2024-11-08 19:00:51,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78.
[2024-11-08 19:00:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-08 19:00:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions.
[2024-11-08 19:00:51,199 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 37
[2024-11-08 19:00:51,199 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:51,199 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions.
[2024-11-08 19:00:51,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:00:51,199 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions.
[2024-11-08 19:00:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2024-11-08 19:00:51,200 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:51,200 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:51,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-11-08 19:00:51,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-11-08 19:00:51,401 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:51,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2029979262, now seen corresponding path program 8 times
[2024-11-08 19:00:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:51,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785813431]
[2024-11-08 19:00:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:51,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 19:00:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:51,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2024-11-08 19:00:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:00:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:51,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:51,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785813431]
[2024-11-08 19:00:51,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785813431] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:51,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172562573]
[2024-11-08 19:00:51,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 19:00:51,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:51,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:51,650 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:51,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-08 19:00:51,751 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 19:00:51,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:00:51,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:51,755 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:51,881 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:00:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172562573] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:00:51,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:00:51,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17
[2024-11-08 19:00:51,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060160487]
[2024-11-08 19:00:51,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:51,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-08 19:00:51,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-08 19:00:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272
[2024-11-08 19:00:51,962 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:00:52,155 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions.
[2024-11-08 19:00:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-08 19:00:52,155 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39
[2024-11-08 19:00:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:00:52,156 INFO L225 Difference]: With dead ends: 136
[2024-11-08 19:00:52,156 INFO L226 Difference]: Without dead ends: 122
[2024-11-08 19:00:52,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380
[2024-11-08 19:00:52,157 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:00:52,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 127 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:00:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2024-11-08 19:00:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104.
[2024-11-08 19:00:52,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 89 states have internal predecessors, (103), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-08 19:00:52,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions.
[2024-11-08 19:00:52,189 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 39
[2024-11-08 19:00:52,189 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:00:52,190 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions.
[2024-11-08 19:00:52,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 19:00:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions.
[2024-11-08 19:00:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 19:00:52,191 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:00:52,191 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:00:52,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2024-11-08 19:00:52,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-11-08 19:00:52,395 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:00:52,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:00:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2101277661, now seen corresponding path program 9 times
[2024-11-08 19:00:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:00:52,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048587469]
[2024-11-08 19:00:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:00:52,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:00:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 19:00:52,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776474607]
[2024-11-08 19:00:52,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 19:00:52,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:00:52,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:00:52,439 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:00:52,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-08 19:00:52,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-11-08 19:00:52,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:00:52,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 69 conjuncts are in the unsatisfiable core
[2024-11-08 19:00:52,644 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:00:52,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:00:52,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 19:00:52,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 19:00:52,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 19:00:52,917 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size
[2024-11-08 19:00:52,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29
[2024-11-08 19:00:52,956 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size
[2024-11-08 19:00:52,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32
[2024-11-08 19:00:53,104 INFO L349 Elim1Store]: treesize reduction 56, result has 29.1 percent of original size
[2024-11-08 19:00:53,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 43
[2024-11-08 19:00:53,169 INFO L349 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size
[2024-11-08 19:00:53,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 46
[2024-11-08 19:00:54,087 INFO L349 Elim1Store]: treesize reduction 396, result has 21.6 percent of original size
[2024-11-08 19:00:54,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 92 treesize of output 133
[2024-11-08 19:00:54,873 INFO L349 Elim1Store]: treesize reduction 416, result has 29.8 percent of original size
[2024-11-08 19:00:54,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 107 treesize of output 210
[2024-11-08 19:00:57,569 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,571 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,572 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,575 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,577 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:57,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 168 treesize of output 100
[2024-11-08 19:00:57,610 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,611 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,613 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,618 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:00:57,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:00:57,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 48
[2024-11-08 19:00:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:00:58,022 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:00:59,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:00:59,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048587469]
[2024-11-08 19:00:59,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 19:00:59,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776474607]
[2024-11-08 19:00:59,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776474607] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:00:59,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:00:59,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2024-11-08 19:00:59,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976011878]
[2024-11-08 19:00:59,574 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:00:59,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 19:00:59,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:00:59,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 19:00:59,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056
[2024-11-08 19:00:59,575 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:01:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:01:00,476 INFO L93 Difference]: Finished difference Result 134 states and 151 transitions.
[2024-11-08 19:01:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-11-08 19:01:00,477 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41
[2024-11-08 19:01:00,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:01:00,478 INFO L225 Difference]: With dead ends: 134
[2024-11-08 19:01:00,478 INFO L226 Difference]: Without dead ends: 130
[2024-11-08 19:01:00,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122
[2024-11-08 19:01:00,479 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-08 19:01:00,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 238 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-08 19:01:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2024-11-08 19:01:00,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 109.
[2024-11-08 19:01:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 94 states have internal predecessors, (109), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-08 19:01:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions.
[2024-11-08 19:01:00,509 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 41
[2024-11-08 19:01:00,509 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:01:00,509 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions.
[2024-11-08 19:01:00,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:01:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions.
[2024-11-08 19:01:00,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 19:01:00,510 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:01:00,510 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:01:00,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2024-11-08 19:01:00,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-11-08 19:01:00,711 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:01:00,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:01:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1080209307, now seen corresponding path program 3 times
[2024-11-08 19:01:00,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:01:00,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027633038]
[2024-11-08 19:01:00,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:01:00,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:01:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 19:01:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415119361]
[2024-11-08 19:01:00,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 19:01:00,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:01:00,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:01:00,781 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:01:00,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-08 19:01:00,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-11-08 19:01:00,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:01:00,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 63 conjuncts are in the unsatisfiable core
[2024-11-08 19:01:00,962 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:01:01,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:01:01,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:01:01,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 19:01:01,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 19:01:01,186 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size
[2024-11-08 19:01:01,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32
[2024-11-08 19:01:01,230 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size
[2024-11-08 19:01:01,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29
[2024-11-08 19:01:01,380 INFO L349 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size
[2024-11-08 19:01:01,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 47
[2024-11-08 19:01:01,412 INFO L349 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size
[2024-11-08 19:01:01,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44
[2024-11-08 19:01:02,941 INFO L349 Elim1Store]: treesize reduction 130, result has 41.4 percent of original size
[2024-11-08 19:01:02,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 144 treesize of output 188
[2024-11-08 19:01:03,714 INFO L349 Elim1Store]: treesize reduction 104, result has 53.2 percent of original size
[2024-11-08 19:01:03,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 101 treesize of output 155
[2024-11-08 19:01:10,680 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,683 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,685 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,690 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,692 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:01:10,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 324 treesize of output 302
[2024-11-08 19:01:10,791 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,793 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,799 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,801 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,809 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 19:01:10,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 19:01:10,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 226 treesize of output 200
[2024-11-08 19:01:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:01:22,418 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:01:23,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:01:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027633038]
[2024-11-08 19:01:23,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 19:01:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415119361]
[2024-11-08 19:01:23,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415119361] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:01:23,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:01:23,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2024-11-08 19:01:23,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822270291]
[2024-11-08 19:01:23,714 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:01:23,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-11-08 19:01:23,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:01:23,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-11-08 19:01:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870
[2024-11-08 19:01:23,715 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:01:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:01:25,505 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions.
[2024-11-08 19:01:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-11-08 19:01:25,505 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41
[2024-11-08 19:01:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:01:25,506 INFO L225 Difference]: With dead ends: 136
[2024-11-08 19:01:25,506 INFO L226 Difference]: Without dead ends: 132
[2024-11-08 19:01:25,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190
[2024-11-08 19:01:25,508 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:01:25,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 295 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-08 19:01:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2024-11-08 19:01:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 106.
[2024-11-08 19:01:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 91 states have internal predecessors, (105), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-08 19:01:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions.
[2024-11-08 19:01:25,565 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 41
[2024-11-08 19:01:25,565 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:01:25,566 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions.
[2024-11-08 19:01:25,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 19:01:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions.
[2024-11-08 19:01:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-11-08 19:01:25,567 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:01:25,567 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:01:25,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-11-08 19:01:25,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-11-08 19:01:25,771 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:01:25,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:01:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1204136183, now seen corresponding path program 1 times
[2024-11-08 19:01:25,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:01:25,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280576317]
[2024-11-08 19:01:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:01:25,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:01:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 19:01:25,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840817445]
[2024-11-08 19:01:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:01:25,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:01:25,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:01:25,837 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:01:25,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-08 19:01:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:01:25,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 79 conjuncts are in the unsatisfiable core
[2024-11-08 19:01:25,955 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:01:26,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:01:26,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:01:26,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 19:01:26,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 19:01:26,758 INFO L349 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size
[2024-11-08 19:01:26,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 66
[2024-11-08 19:01:27,049 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size
[2024-11-08 19:01:27,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 38
[2024-11-08 19:01:27,612 INFO L349 Elim1Store]: treesize reduction 88, result has 29.6 percent of original size
[2024-11-08 19:01:27,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 58
[2024-11-08 19:01:27,910 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size
[2024-11-08 19:01:27,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 41
[2024-11-08 19:01:28,416 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size
[2024-11-08 19:01:28,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 26
[2024-11-08 19:01:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:01:28,514 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:01:29,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:01:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280576317]
[2024-11-08 19:01:29,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 19:01:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840817445]
[2024-11-08 19:01:29,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840817445] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:01:29,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:01:29,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29
[2024-11-08 19:01:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726691946]
[2024-11-08 19:01:29,118 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:01:29,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-11-08 19:01:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:01:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-11-08 19:01:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406
[2024-11-08 19:01:29,120 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 19:01:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:01:30,620 INFO L93 Difference]: Finished difference Result 137 states and 153 transitions.
[2024-11-08 19:01:30,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2024-11-08 19:01:30,621 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43
[2024-11-08 19:01:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:01:30,622 INFO L225 Difference]: With dead ends: 137
[2024-11-08 19:01:30,622 INFO L226 Difference]: Without dead ends: 127
[2024-11-08 19:01:30,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=324, Invalid=1838, Unknown=0, NotChecked=0, Total=2162
[2024-11-08 19:01:30,624 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 53 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-08 19:01:30,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 271 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-08 19:01:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2024-11-08 19:01:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120.
[2024-11-08 19:01:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 103 states have internal predecessors, (117), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-08 19:01:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions.
[2024-11-08 19:01:30,661 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 43
[2024-11-08 19:01:30,661 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:01:30,661 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions.
[2024-11-08 19:01:30,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 19:01:30,662 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions.
[2024-11-08 19:01:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-11-08 19:01:30,662 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:01:30,663 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:01:30,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-11-08 19:01:30,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-11-08 19:01:30,864 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:01:30,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:01:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1462301621, now seen corresponding path program 1 times
[2024-11-08 19:01:30,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:01:30,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292815927]
[2024-11-08 19:01:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:01:30,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:01:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 19:01:30,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872151622]
[2024-11-08 19:01:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:01:30,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:01:30,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:01:30,901 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:01:30,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-08 19:01:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:01:31,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 68 conjuncts are in the unsatisfiable core
[2024-11-08 19:01:31,032 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:01:31,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 19:01:31,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 19:01:31,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 19:01:31,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 19:01:31,869 INFO L349 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size
[2024-11-08 19:01:31,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 66
[2024-11-08 19:01:32,379 INFO L349 Elim1Store]: treesize reduction 104, result has 45.0 percent of original size
[2024-11-08 19:01:32,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 63 treesize of output 106
[2024-11-08 19:01:33,647 INFO L349 Elim1Store]: treesize reduction 120, result has 45.2 percent of original size
[2024-11-08 19:01:33,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 118 treesize of output 180
[2024-11-08 19:08:29,849 WARN L286 SmtUtils]: Spent 6.76m on a formula simplification. DAG size of input: 7850 DAG size of output: 786 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1)
[2024-11-08 19:08:29,850 INFO L349 Elim1Store]: treesize reduction 20580, result has 8.2 percent of original size
[2024-11-08 19:08:29,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 98 select indices, 98 select index equivalence classes, 1 disjoint index pairs (out of 4753 index pairs), introduced 98 new quantified variables, introduced 4850 case distinctions, treesize of input 1738 treesize of output 3161
[2024-11-08 19:14:36,777 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory")
[2024-11-08 19:14:36,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101
[2024-11-08 19:14:36,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:14:36,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292815927]
[2024-11-08 19:14:36,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 19:14:36,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872151622]
[2024-11-08 19:14:36,779 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception
[2024-11-08 19:14:36,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2024-11-08 19:14:36,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-08 19:14:36,980 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver:
de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117)
at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:274)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.<init>(TraceCheckSpWp.java:159)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:143)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701)
at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258)
... 74 more
[2024-11-08 19:14:36,984 INFO L158 Benchmark]: Toolchain (without parser) took 861056.76ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 75.9MB in the beginning and 526.4MB in the end (delta: -450.5MB). Peak memory consumption was 832.2MB. Max. memory is 16.1GB.
[2024-11-08 19:14:36,984 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 19:14:36,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.45ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 62.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-08 19:14:36,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.08ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 61.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 19:14:36,985 INFO L158 Benchmark]: Boogie Preprocessor took 47.12ms. Allocated memory is still 117.4MB. Free memory was 61.2MB in the beginning and 59.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 19:14:36,985 INFO L158 Benchmark]: RCFGBuilder took 363.70ms. Allocated memory is still 117.4MB. Free memory was 59.2MB in the beginning and 46.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-08 19:14:36,985 INFO L158 Benchmark]: TraceAbstraction took 860309.14ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 45.7MB in the beginning and 526.4MB in the end (delta: -480.7MB). Peak memory consumption was 802.9MB. Max. memory is 16.1GB.
[2024-11-08 19:14:36,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 294.45ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 62.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 35.08ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 61.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 47.12ms. Allocated memory is still 117.4MB. Free memory was 61.2MB in the beginning and 59.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 363.70ms. Allocated memory is still 117.4MB. Free memory was 59.2MB in the beginning and 46.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 860309.14ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 45.7MB in the beginning and 526.4MB in the end (delta: -480.7MB). Peak memory consumption was 802.9MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array9_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX --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 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 19:14:39,734 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 19:14:39,879 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_399a3078-a5e9-4cf0-a236-23c4905f1215/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-08 19:14:39,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 19:14:39,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 19:14:39,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 19:14:39,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 19:14:39,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 19:14:39,940 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 19:14:39,941 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 19:14:39,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 19:14:39,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 19:14:39,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 19:14:39,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 19:14:39,947 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 19:14:39,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 19:14:39,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 19:14:39,949 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 19:14:39,949 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 19:14:39,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 19:14:39,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 19:14:39,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 19:14:39,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 19:14:39,957 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 19:14:39,958 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-08 19:14:39,958 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 19:14:39,959 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-08 19:14:39,959 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 19:14:39,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 19:14:39,960 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 19:14:39,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 19:14:39,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 19:14:39,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 19:14:39,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 19:14:39,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 19:14:39,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 19:14:39,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 19:14:39,965 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 19:14:39,965 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-08 19:14:39,966 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-08 19:14:39,966 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 19:14:39,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 19:14:39,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 19:14:39,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 19:14:39,968 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC