./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 7b2dab56
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --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 a6fb0bd99900489be753a8775662d48a6e29966e
.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE
--- Real Ultimate output ---
This is Ultimate 0.2.0-7b2dab5
[2021-10-11 00:21:33,334 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-10-11 00:21:33,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-11 00:21:33,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-11 00:21:33,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-11 00:21:33,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-11 00:21:33,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-11 00:21:33,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-11 00:21:33,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-11 00:21:33,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-11 00:21:33,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-10-11 00:21:33,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-11 00:21:33,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-11 00:21:33,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-11 00:21:33,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-11 00:21:33,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-11 00:21:33,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-11 00:21:33,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-11 00:21:33,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-11 00:21:33,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-11 00:21:33,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-11 00:21:33,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-11 00:21:33,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-10-11 00:21:33,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-11 00:21:33,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-11 00:21:33,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-11 00:21:33,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-11 00:21:33,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-11 00:21:33,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-11 00:21:33,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-11 00:21:33,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-11 00:21:33,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-11 00:21:33,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-11 00:21:33,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-11 00:21:33,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-11 00:21:33,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-11 00:21:33,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-11 00:21:33,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-11 00:21:33,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-11 00:21:33,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-11 00:21:33,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-10-11 00:21:33,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-11 00:21:33,445 INFO L113 SettingsManager]: Loading preferences was successful
[2021-10-11 00:21:33,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-11 00:21:33,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-11 00:21:33,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-10-11 00:21:33,448 INFO L138 SettingsManager]: * Use SBE=true
[2021-10-11 00:21:33,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-11 00:21:33,448 INFO L138 SettingsManager]: * sizeof long=4
[2021-10-11 00:21:33,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-10-11 00:21:33,449 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-10-11 00:21:33,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-10-11 00:21:33,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-10-11 00:21:33,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-11 00:21:33,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-10-11 00:21:33,450 INFO L138 SettingsManager]: * sizeof long double=12
[2021-10-11 00:21:33,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-10-11 00:21:33,450 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-10-11 00:21:33,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-10-11 00:21:33,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-11 00:21:33,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-10-11 00:21:33,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-10-11 00:21:33,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-11 00:21:33,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-11 00:21:33,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-10-11 00:21:33,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-11 00:21:33,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-10-11 00:21:33,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-11 00:21:33,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-11 00:21:33,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-10-11 00:21:33,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
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_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6fb0bd99900489be753a8775662d48a6e29966e
[2021-10-11 00:21:33,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-11 00:21:33,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-11 00:21:33,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-11 00:21:33,711 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-10-11 00:21:33,712 INFO L275 PluginConnector]: CDTParser initialized
[2021-10-11 00:21:33,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c
[2021-10-11 00:21:33,787 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/data/cde17b322/5f62c000111b4f0186918e3056a87d73/FLAG65a728129
[2021-10-11 00:21:34,265 INFO L306 CDTParser]: Found 1 translation units.
[2021-10-11 00:21:34,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c
[2021-10-11 00:21:34,281 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/data/cde17b322/5f62c000111b4f0186918e3056a87d73/FLAG65a728129
[2021-10-11 00:21:34,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/data/cde17b322/5f62c000111b4f0186918e3056a87d73
[2021-10-11 00:21:34,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-11 00:21:34,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-11 00:21:34,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-11 00:21:34,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-11 00:21:34,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-11 00:21:34,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c79acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34, skipping insertion in model container
[2021-10-11 00:21:34,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-10-11 00:21:34,691 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-10-11 00:21:34,862 WARN L226 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_6dde4765-e417-4172-a69c-185b94bffc33/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c[450,463]
[2021-10-11 00:21:34,871 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-11 00:21:34,891 INFO L203 MainTranslator]: Completed pre-run
[2021-10-11 00:21:34,907 WARN L226 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_6dde4765-e417-4172-a69c-185b94bffc33/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c[450,463]
[2021-10-11 00:21:34,907 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-11 00:21:34,924 INFO L208 MainTranslator]: Completed translation
[2021-10-11 00:21:34,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34 WrapperNode
[2021-10-11 00:21:34,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-11 00:21:34,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-11 00:21:34,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-11 00:21:34,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-11 00:21:34,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-11 00:21:34,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-11 00:21:34,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-11 00:21:34,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-10-11 00:21:34,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
[2021-10-11 00:21:34,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-11 00:21:34,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-11 00:21:34,985 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-10-11 00:21:34,985 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-10-11 00:21:34,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ...
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-11 00:21:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-11 00:21:35,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-11 00:21:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-11 00:21:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure id
[2021-10-11 00:21:35,083 INFO L138 BoogieDeclarations]: Found implementation of procedure id
[2021-10-11 00:21:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-11 00:21:35,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-11 00:21:35,315 INFO L299 CfgBuilder]: Removed 4 assume(true) statements.
[2021-10-11 00:21:35,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:35 BoogieIcfgContainer
[2021-10-11 00:21:35,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-11 00:21:35,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-11 00:21:35,336 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-10-11 00:21:35,341 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-10-11 00:21:35,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:21:34" (1/3) ...
[2021-10-11 00:21:35,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdd6b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:21:35, skipping insertion in model container
[2021-10-11 00:21:35,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (2/3) ...
[2021-10-11 00:21:35,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdd6b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:21:35, skipping insertion in model container
[2021-10-11 00:21:35,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:35" (3/3) ...
[2021-10-11 00:21:35,344 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c
[2021-10-11 00:21:35,367 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-11 00:21:35,370 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-10-11 00:21:35,381 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-10-11 00:21:35,410 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2021-10-11 00:21:35,411 INFO L378 AbstractCegarLoop]: Hoare is true
[2021-10-11 00:21:35,411 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-10-11 00:21:35,411 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-10-11 00:21:35,411 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-10-11 00:21:35,411 INFO L382 AbstractCegarLoop]: Difference is false
[2021-10-11 00:21:35,411 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-10-11 00:21:35,411 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-10-11 00:21:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states.
[2021-10-11 00:21:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-10-11 00:21:35,434 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:21:35,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:21:35,435 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:21:35,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:21:35,440 INFO L82 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times
[2021-10-11 00:21:35,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:21:35,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310034712]
[2021-10-11 00:21:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:21:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:21:35,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310034712]
[2021-10-11 00:21:35,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-11 00:21:35,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-10-11 00:21:35,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994015146]
[2021-10-11 00:21:35,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-10-11 00:21:35,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:21:35,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-11 00:21:35,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-10-11 00:21:35,729 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states.
[2021-10-11 00:21:35,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:21:35,818 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions.
[2021-10-11 00:21:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-11 00:21:35,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10
[2021-10-11 00:21:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:21:35,831 INFO L225 Difference]: With dead ends: 25
[2021-10-11 00:21:35,831 INFO L226 Difference]: Without dead ends: 15
[2021-10-11 00:21:35,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-10-11 00:21:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2021-10-11 00:21:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2021-10-11 00:21:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2021-10-11 00:21:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions.
[2021-10-11 00:21:35,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10
[2021-10-11 00:21:35,871 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:21:35,871 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions.
[2021-10-11 00:21:35,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-10-11 00:21:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions.
[2021-10-11 00:21:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-10-11 00:21:35,873 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:21:35,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:21:35,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-11 00:21:35,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:21:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:21:35,875 INFO L82 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times
[2021-10-11 00:21:35,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:21:35,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857165054]
[2021-10-11 00:21:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:21:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:35,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-11 00:21:36,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857165054]
[2021-10-11 00:21:36,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255449192]
[2021-10-11 00:21:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:36,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-10-11 00:21:36,103 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:21:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-11 00:21:36,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:21:36,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2021-10-11 00:21:36,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850871437]
[2021-10-11 00:21:36,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-10-11 00:21:36,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:21:36,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-11 00:21:36,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2021-10-11 00:21:36,270 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states.
[2021-10-11 00:21:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:21:36,316 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions.
[2021-10-11 00:21:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-11 00:21:36,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16
[2021-10-11 00:21:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:21:36,317 INFO L225 Difference]: With dead ends: 22
[2021-10-11 00:21:36,318 INFO L226 Difference]: Without dead ends: 18
[2021-10-11 00:21:36,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2021-10-11 00:21:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2021-10-11 00:21:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2021-10-11 00:21:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2021-10-11 00:21:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2021-10-11 00:21:36,324 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16
[2021-10-11 00:21:36,324 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:21:36,325 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2021-10-11 00:21:36,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2021-10-11 00:21:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2021-10-11 00:21:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-10-11 00:21:36,326 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:21:36,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:21:36,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2021-10-11 00:21:36,539 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:21:36,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:21:36,540 INFO L82 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times
[2021-10-11 00:21:36,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:21:36,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588570624]
[2021-10-11 00:21:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:21:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:36,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-10-11 00:21:36,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588570624]
[2021-10-11 00:21:36,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238752877]
[2021-10-11 00:21:36,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:36,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-11 00:21:36,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:21:36,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-10-11 00:21:36,813 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:21:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-10-11 00:21:36,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:21:36,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2021-10-11 00:21:36,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256812646]
[2021-10-11 00:21:36,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-10-11 00:21:36,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:21:36,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-10-11 00:21:36,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2021-10-11 00:21:36,946 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 9 states.
[2021-10-11 00:21:37,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:21:37,013 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions.
[2021-10-11 00:21:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-10-11 00:21:37,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22
[2021-10-11 00:21:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:21:37,016 INFO L225 Difference]: With dead ends: 25
[2021-10-11 00:21:37,016 INFO L226 Difference]: Without dead ends: 21
[2021-10-11 00:21:37,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2021-10-11 00:21:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2021-10-11 00:21:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2021-10-11 00:21:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2021-10-11 00:21:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2021-10-11 00:21:37,028 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22
[2021-10-11 00:21:37,028 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:21:37,028 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2021-10-11 00:21:37,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2021-10-11 00:21:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2021-10-11 00:21:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-10-11 00:21:37,031 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:21:37,031 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:21:37,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:37,245 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:21:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:21:37,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times
[2021-10-11 00:21:37,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:21:37,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908757795]
[2021-10-11 00:21:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:21:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:37,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:37,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:37,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:37,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-10-11 00:21:37,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908757795]
[2021-10-11 00:21:37,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874228698]
[2021-10-11 00:21:37,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:37,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-10-11 00:21:37,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:21:37,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-10-11 00:21:37,536 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:21:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-10-11 00:21:37,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:21:37,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2021-10-11 00:21:37,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507796720]
[2021-10-11 00:21:37,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-10-11 00:21:37,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:21:37,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-11 00:21:37,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-10-11 00:21:37,636 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states.
[2021-10-11 00:21:37,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:21:37,694 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions.
[2021-10-11 00:21:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-10-11 00:21:37,695 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28
[2021-10-11 00:21:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:21:37,696 INFO L225 Difference]: With dead ends: 28
[2021-10-11 00:21:37,696 INFO L226 Difference]: Without dead ends: 24
[2021-10-11 00:21:37,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182
[2021-10-11 00:21:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2021-10-11 00:21:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2021-10-11 00:21:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2021-10-11 00:21:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2021-10-11 00:21:37,702 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28
[2021-10-11 00:21:37,703 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:21:37,703 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2021-10-11 00:21:37,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2021-10-11 00:21:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2021-10-11 00:21:37,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-10-11 00:21:37,704 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:21:37,705 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:21:37,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:37,933 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:21:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:21:37,933 INFO L82 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times
[2021-10-11 00:21:37,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:21:37,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694683475]
[2021-10-11 00:21:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:21:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:37,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2021-10-11 00:21:38,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694683475]
[2021-10-11 00:21:38,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407849143]
[2021-10-11 00:21:38,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:38,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-11 00:21:38,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-10-11 00:21:38,183 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:21:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2021-10-11 00:21:38,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:21:38,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11
[2021-10-11 00:21:38,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288018954]
[2021-10-11 00:21:38,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-10-11 00:21:38,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:21:38,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-10-11 00:21:38,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2021-10-11 00:21:38,290 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 11 states.
[2021-10-11 00:21:38,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:21:38,391 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions.
[2021-10-11 00:21:38,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-10-11 00:21:38,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34
[2021-10-11 00:21:38,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:21:38,399 INFO L225 Difference]: With dead ends: 31
[2021-10-11 00:21:38,400 INFO L226 Difference]: Without dead ends: 27
[2021-10-11 00:21:38,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240
[2021-10-11 00:21:38,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-10-11 00:21:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2021-10-11 00:21:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2021-10-11 00:21:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2021-10-11 00:21:38,406 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34
[2021-10-11 00:21:38,406 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:21:38,406 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2021-10-11 00:21:38,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2021-10-11 00:21:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2021-10-11 00:21:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2021-10-11 00:21:38,408 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:21:38,408 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:21:38,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:38,618 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:21:38,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:21:38,619 INFO L82 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times
[2021-10-11 00:21:38,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:21:38,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070088243]
[2021-10-11 00:21:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:21:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:38,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2021-10-11 00:21:39,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070088243]
[2021-10-11 00:21:39,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101177740]
[2021-10-11 00:21:39,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:39,074 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-10-11 00:21:39,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-10-11 00:21:39,079 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:21:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2021-10-11 00:21:39,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:21:39,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15
[2021-10-11 00:21:39,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231021168]
[2021-10-11 00:21:39,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2021-10-11 00:21:39,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:21:39,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-10-11 00:21:39,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210
[2021-10-11 00:21:39,182 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 15 states.
[2021-10-11 00:21:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:21:39,323 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions.
[2021-10-11 00:21:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-10-11 00:21:39,324 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40
[2021-10-11 00:21:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:21:39,325 INFO L225 Difference]: With dead ends: 34
[2021-10-11 00:21:39,325 INFO L226 Difference]: Without dead ends: 30
[2021-10-11 00:21:39,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210
[2021-10-11 00:21:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2021-10-11 00:21:39,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2021-10-11 00:21:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2021-10-11 00:21:39,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2021-10-11 00:21:39,331 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40
[2021-10-11 00:21:39,332 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:21:39,332 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2021-10-11 00:21:39,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2021-10-11 00:21:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2021-10-11 00:21:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2021-10-11 00:21:39,333 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:21:39,333 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:21:39,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-10-11 00:21:39,548 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:21:39,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:21:39,549 INFO L82 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times
[2021-10-11 00:21:39,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:21:39,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168495557]
[2021-10-11 00:21:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:21:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:21:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2021-10-11 00:21:39,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168495557]
[2021-10-11 00:21:39,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356370310]
[2021-10-11 00:21:39,725 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:39,784 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2021-10-11 00:21:39,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:21:39,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core
[2021-10-11 00:21:39,788 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:21:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2021-10-11 00:21:39,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-10-11 00:21:39,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 13
[2021-10-11 00:21:39,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732438051]
[2021-10-11 00:21:39,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-10-11 00:21:39,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:21:39,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-10-11 00:21:39,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156
[2021-10-11 00:21:39,919 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states.
[2021-10-11 00:21:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:21:40,053 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions.
[2021-10-11 00:21:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-10-11 00:21:40,054 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46
[2021-10-11 00:21:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:21:40,055 INFO L225 Difference]: With dead ends: 30
[2021-10-11 00:21:40,055 INFO L226 Difference]: Without dead ends: 0
[2021-10-11 00:21:40,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380
[2021-10-11 00:21:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-10-11 00:21:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-10-11 00:21:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2021-10-11 00:21:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-10-11 00:21:40,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46
[2021-10-11 00:21:40,056 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:21:40,056 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-10-11 00:21:40,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2021-10-11 00:21:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-10-11 00:21:40,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-10-11 00:21:40,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:21:40,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-10-11 00:21:40,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-10-11 00:21:40,311 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-10-11 00:21:40,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-10-11 00:21:40,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-10-11 00:21:40,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed.
[2021-10-11 00:21:40,311 INFO L262 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2021-10-11 00:21:40,311 INFO L262 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed.
[2021-10-11 00:21:40,312 INFO L258 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= 5 ULTIMATE.start_main_~input~0) (<= ULTIMATE.start_main_~input~0 5))
[2021-10-11 00:21:40,312 INFO L262 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed.
[2021-10-11 00:21:40,312 INFO L262 CegarLoopResult]: For program point L11(lines 11 17) no Hoare annotation was computed.
[2021-10-11 00:21:40,312 INFO L262 CegarLoopResult]: For program point idFINAL(lines 6 9) no Hoare annotation was computed.
[2021-10-11 00:21:40,312 INFO L262 CegarLoopResult]: For program point idEXIT(lines 6 9) no Hoare annotation was computed.
[2021-10-11 00:21:40,312 INFO L258 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x)
[2021-10-11 00:21:40,312 INFO L265 CegarLoopResult]: At program point idENTRY(lines 6 9) the Hoare annotation is: true
[2021-10-11 00:21:40,312 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed.
[2021-10-11 00:21:40,312 INFO L262 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed.
[2021-10-11 00:21:40,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:21:40 BoogieIcfgContainer
[2021-10-11 00:21:40,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-11 00:21:40,316 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-11 00:21:40,316 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-10-11 00:21:40,317 INFO L275 PluginConnector]: Witness Printer initialized
[2021-10-11 00:21:40,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:35" (3/4) ...
[2021-10-11 00:21:40,319 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-10-11 00:21:40,325 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id
[2021-10-11 00:21:40,328 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges
[2021-10-11 00:21:40,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2021-10-11 00:21:40,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-11 00:21:40,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-11 00:21:40,357 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde4765-e417-4172-a69c-185b94bffc33/bin/uautomizer-Z5i5R5N3CC/witness.graphml
[2021-10-11 00:21:40,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-11 00:21:40,358 INFO L168 Benchmark]: Toolchain (without parser) took 5694.38 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 70.4 MB in the beginning and 117.0 MB in the end (delta: -46.6 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 00:21:40,359 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 00:21:40,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.48 ms. Allocated memory is still 100.7 MB. Free memory was 70.2 MB in the beginning and 76.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-11 00:21:40,360 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.26 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-11 00:21:40,361 INFO L168 Benchmark]: Boogie Preprocessor took 16.39 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.8 MB in the end (delta: 688.4 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 00:21:40,361 INFO L168 Benchmark]: RCFGBuilder took 332.55 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 63.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-11 00:21:40,362 INFO L168 Benchmark]: TraceAbstraction took 4980.46 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 63.3 MB in the beginning and 119.1 MB in the end (delta: -55.8 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 00:21:40,362 INFO L168 Benchmark]: Witness Printer took 40.52 ms. Allocated memory is still 146.8 MB. Free memory was 119.1 MB in the beginning and 117.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-11 00:21:40,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 261.48 ms. Allocated memory is still 100.7 MB. Free memory was 70.2 MB in the beginning and 76.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
* Boogie Procedure Inliner took 37.26 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* Boogie Preprocessor took 16.39 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.8 MB in the end (delta: 688.4 kB). There was no memory consumed. Max. memory is 16.1 GB.
* RCFGBuilder took 332.55 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 63.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 4980.46 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 63.3 MB in the beginning and 119.1 MB in the end (delta: -55.8 MB). There was no memory consumed. Max. memory is 16.1 GB.
* Witness Printer took 40.52 ms. Allocated memory is still 146.8 MB. Free memory was 119.1 MB in the beginning and 117.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 15]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 81 SDslu, 427 SDs, 0 SdLazy, 272 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 382 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 33225 SizeOfPredicates, 27 NumberOfNonLiveVariables, 557 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 396/588 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...