./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.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_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/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_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/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_d53ee0a6-926d-443b-b4de-f87a5af55b46/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 f8ce463a68003145f68f57eef3f97a99b93a908a
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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 00:23:13,841 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-10-11 00:23:13,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-11 00:23:13,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-11 00:23:13,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-11 00:23:13,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-11 00:23:13,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-11 00:23:13,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-11 00:23:13,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-11 00:23:13,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-11 00:23:13,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-10-11 00:23:13,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-11 00:23:13,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-11 00:23:13,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-11 00:23:13,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-11 00:23:13,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-11 00:23:13,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-11 00:23:13,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-11 00:23:13,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-11 00:23:13,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-11 00:23:13,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-11 00:23:13,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-11 00:23:13,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-10-11 00:23:13,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-11 00:23:13,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-11 00:23:13,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-11 00:23:13,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-11 00:23:13,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-11 00:23:13,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-11 00:23:13,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-11 00:23:13,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-11 00:23:13,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-11 00:23:13,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-11 00:23:13,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-11 00:23:13,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-11 00:23:13,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-11 00:23:13,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-11 00:23:13,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-11 00:23:13,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-11 00:23:13,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-11 00:23:13,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-10-11 00:23:13,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-11 00:23:14,040 INFO L113 SettingsManager]: Loading preferences was successful
[2021-10-11 00:23:14,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-11 00:23:14,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-11 00:23:14,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-10-11 00:23:14,044 INFO L138 SettingsManager]: * Use SBE=true
[2021-10-11 00:23:14,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-11 00:23:14,045 INFO L138 SettingsManager]: * sizeof long=4
[2021-10-11 00:23:14,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-10-11 00:23:14,045 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-10-11 00:23:14,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-10-11 00:23:14,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-10-11 00:23:14,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-11 00:23:14,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-10-11 00:23:14,055 INFO L138 SettingsManager]: * sizeof long double=12
[2021-10-11 00:23:14,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-10-11 00:23:14,056 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-10-11 00:23:14,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-10-11 00:23:14,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-11 00:23:14,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-10-11 00:23:14,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-10-11 00:23:14,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-11 00:23:14,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-11 00:23:14,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-10-11 00:23:14,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-11 00:23:14,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-10-11 00:23:14,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-11 00:23:14,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-11 00:23:14,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-10-11 00:23:14,059 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_d53ee0a6-926d-443b-b4de-f87a5af55b46/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8ce463a68003145f68f57eef3f97a99b93a908a
[2021-10-11 00:23:14,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-11 00:23:14,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-11 00:23:14,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-11 00:23:14,386 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-10-11 00:23:14,387 INFO L275 PluginConnector]: CDTParser initialized
[2021-10-11 00:23:14,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c
[2021-10-11 00:23:14,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/data/69a38d04e/30f6ce4bf77d4979823f09a2700e5d5a/FLAG179b9f4b0
[2021-10-11 00:23:15,049 INFO L306 CDTParser]: Found 1 translation units.
[2021-10-11 00:23:15,050 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c
[2021-10-11 00:23:15,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/data/69a38d04e/30f6ce4bf77d4979823f09a2700e5d5a/FLAG179b9f4b0
[2021-10-11 00:23:15,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/data/69a38d04e/30f6ce4bf77d4979823f09a2700e5d5a
[2021-10-11 00:23:15,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-11 00:23:15,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-11 00:23:15,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-11 00:23:15,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-11 00:23:15,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-11 00:23:15,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d78a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15, skipping insertion in model container
[2021-10-11 00:23:15,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-10-11 00:23:15,475 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-10-11 00:23:15,731 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_d53ee0a6-926d-443b-b4de-f87a5af55b46/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959]
[2021-10-11 00:23:15,740 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-11 00:23:15,750 INFO L203 MainTranslator]: Completed pre-run
[2021-10-11 00:23:15,774 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_d53ee0a6-926d-443b-b4de-f87a5af55b46/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959]
[2021-10-11 00:23:15,776 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-11 00:23:15,795 INFO L208 MainTranslator]: Completed translation
[2021-10-11 00:23:15,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15 WrapperNode
[2021-10-11 00:23:15,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-11 00:23:15,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-11 00:23:15,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-11 00:23:15,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-11 00:23:15,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-11 00:23:15,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-11 00:23:15,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-11 00:23:15,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-10-11 00:23:15,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
[2021-10-11 00:23:15,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-11 00:23:15,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-11 00:23:15,869 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-10-11 00:23:15,869 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-10-11 00:23:15,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ...
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/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 00:23:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-11 00:23:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2
[2021-10-11 00:23:15,967 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2
[2021-10-11 00:23:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-11 00:23:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1
[2021-10-11 00:23:15,968 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1
[2021-10-11 00:23:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-11 00:23:15,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-11 00:23:16,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-11 00:23:16,289 INFO L299 CfgBuilder]: Removed 4 assume(true) statements.
[2021-10-11 00:23:16,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:16 BoogieIcfgContainer
[2021-10-11 00:23:16,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-11 00:23:16,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-11 00:23:16,293 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-10-11 00:23:16,310 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-10-11 00:23:16,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:23:15" (1/3) ...
[2021-10-11 00:23:16,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bde8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:16, skipping insertion in model container
[2021-10-11 00:23:16,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (2/3) ...
[2021-10-11 00:23:16,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bde8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:16, skipping insertion in model container
[2021-10-11 00:23:16,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:16" (3/3) ...
[2021-10-11 00:23:16,313 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c
[2021-10-11 00:23:16,327 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-11 00:23:16,330 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-10-11 00:23:16,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-10-11 00:23:16,364 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2021-10-11 00:23:16,364 INFO L378 AbstractCegarLoop]: Hoare is true
[2021-10-11 00:23:16,365 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-10-11 00:23:16,365 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-10-11 00:23:16,365 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-10-11 00:23:16,365 INFO L382 AbstractCegarLoop]: Difference is false
[2021-10-11 00:23:16,365 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-10-11 00:23:16,366 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-10-11 00:23:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states.
[2021-10-11 00:23:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-10-11 00:23:16,399 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:16,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:16,401 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:16,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:16,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times
[2021-10-11 00:23:16,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:16,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120989859]
[2021-10-11 00:23:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:16,622 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 00:23:16,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120989859]
[2021-10-11 00:23:16,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-11 00:23:16,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-10-11 00:23:16,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949346086]
[2021-10-11 00:23:16,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-10-11 00:23:16,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:16,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-11 00:23:16,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-10-11 00:23:16,647 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states.
[2021-10-11 00:23:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:16,756 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions.
[2021-10-11 00:23:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-11 00:23:16,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10
[2021-10-11 00:23:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:16,768 INFO L225 Difference]: With dead ends: 39
[2021-10-11 00:23:16,768 INFO L226 Difference]: Without dead ends: 27
[2021-10-11 00:23:16,773 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 00:23:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-10-11 00:23:16,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2021-10-11 00:23:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2021-10-11 00:23:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions.
[2021-10-11 00:23:16,824 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10
[2021-10-11 00:23:16,825 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:16,825 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions.
[2021-10-11 00:23:16,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-10-11 00:23:16,825 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions.
[2021-10-11 00:23:16,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-11 00:23:16,827 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:16,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:16,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-11 00:23:16,828 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:16,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times
[2021-10-11 00:23:16,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:16,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687591435]
[2021-10-11 00:23:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:16,941 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 00:23:16,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687591435]
[2021-10-11 00:23:16,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-11 00:23:16,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-10-11 00:23:16,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534968296]
[2021-10-11 00:23:16,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-10-11 00:23:16,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:16,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-11 00:23:16,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-10-11 00:23:16,946 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 5 states.
[2021-10-11 00:23:17,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:17,009 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions.
[2021-10-11 00:23:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-11 00:23:17,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11
[2021-10-11 00:23:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:17,011 INFO L225 Difference]: With dead ends: 33
[2021-10-11 00:23:17,013 INFO L226 Difference]: Without dead ends: 29
[2021-10-11 00:23:17,014 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 00:23:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2021-10-11 00:23:17,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27.
[2021-10-11 00:23:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2021-10-11 00:23:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions.
[2021-10-11 00:23:17,022 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11
[2021-10-11 00:23:17,022 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:17,022 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions.
[2021-10-11 00:23:17,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-10-11 00:23:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions.
[2021-10-11 00:23:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-10-11 00:23:17,024 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:17,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:17,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-10-11 00:23:17,025 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:17,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times
[2021-10-11 00:23:17,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:17,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158522682]
[2021-10-11 00:23:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2021-10-11 00:23:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-11 00:23:17,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158522682]
[2021-10-11 00:23:17,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789255366]
[2021-10-11 00:23:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/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 00:23:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-10-11 00:23:17,203 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-11 00:23:17,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:17,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10
[2021-10-11 00:23:17,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546950882]
[2021-10-11 00:23:17,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-10-11 00:23:17,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:17,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-11 00:23:17,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2021-10-11 00:23:17,323 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 10 states.
[2021-10-11 00:23:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:17,471 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions.
[2021-10-11 00:23:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-10-11 00:23:17,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23
[2021-10-11 00:23:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:17,474 INFO L225 Difference]: With dead ends: 55
[2021-10-11 00:23:17,474 INFO L226 Difference]: Without dead ends: 31
[2021-10-11 00:23:17,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2021-10-11 00:23:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2021-10-11 00:23:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29.
[2021-10-11 00:23:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2021-10-11 00:23:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions.
[2021-10-11 00:23:17,483 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23
[2021-10-11 00:23:17,483 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:17,483 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions.
[2021-10-11 00:23:17,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2021-10-11 00:23:17,484 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions.
[2021-10-11 00:23:17,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-10-11 00:23:17,485 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:17,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:17,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2021-10-11 00:23:17,712 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:17,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:17,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times
[2021-10-11 00:23:17,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:17,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065195370]
[2021-10-11 00:23:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-11 00:23:17,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065195370]
[2021-10-11 00:23:17,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905533183]
[2021-10-11 00:23:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/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 00:23:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:17,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-10-11 00:23:17,862 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-11 00:23:17,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:17,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10
[2021-10-11 00:23:17,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4492651]
[2021-10-11 00:23:17,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-10-11 00:23:17,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:17,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-11 00:23:17,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2021-10-11 00:23:17,968 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 10 states.
[2021-10-11 00:23:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:18,151 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions.
[2021-10-11 00:23:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-10-11 00:23:18,152 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24
[2021-10-11 00:23:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:18,160 INFO L225 Difference]: With dead ends: 51
[2021-10-11 00:23:18,160 INFO L226 Difference]: Without dead ends: 47
[2021-10-11 00:23:18,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2021-10-11 00:23:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2021-10-11 00:23:18,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45.
[2021-10-11 00:23:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2021-10-11 00:23:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions.
[2021-10-11 00:23:18,186 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24
[2021-10-11 00:23:18,187 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:18,187 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions.
[2021-10-11 00:23:18,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2021-10-11 00:23:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions.
[2021-10-11 00:23:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-10-11 00:23:18,195 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:18,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1]
[2021-10-11 00:23:18,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:18,412 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:18,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:18,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times
[2021-10-11 00:23:18,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:18,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999660390]
[2021-10-11 00:23:18,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:18,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2021-10-11 00:23:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2021-10-11 00:23:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-10-11 00:23:18,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999660390]
[2021-10-11 00:23:18,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676720751]
[2021-10-11 00:23:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/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 00:23:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:18,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-10-11 00:23:18,596 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-10-11 00:23:18,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:18,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11
[2021-10-11 00:23:18,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564355721]
[2021-10-11 00:23:18,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-10-11 00:23:18,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:18,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-10-11 00:23:18,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2021-10-11 00:23:18,758 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand 11 states.
[2021-10-11 00:23:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:19,041 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions.
[2021-10-11 00:23:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-10-11 00:23:19,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36
[2021-10-11 00:23:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:19,047 INFO L225 Difference]: With dead ends: 105
[2021-10-11 00:23:19,048 INFO L226 Difference]: Without dead ends: 63
[2021-10-11 00:23:19,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306
[2021-10-11 00:23:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2021-10-11 00:23:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63.
[2021-10-11 00:23:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states.
[2021-10-11 00:23:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions.
[2021-10-11 00:23:19,066 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36
[2021-10-11 00:23:19,066 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:19,066 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions.
[2021-10-11 00:23:19,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2021-10-11 00:23:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions.
[2021-10-11 00:23:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2021-10-11 00:23:19,068 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:19,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1]
[2021-10-11 00:23:19,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:19,284 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:19,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times
[2021-10-11 00:23:19,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:19,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440380738]
[2021-10-11 00:23:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:19,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:19,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:19,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-10-11 00:23:19,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440380738]
[2021-10-11 00:23:19,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200518108]
[2021-10-11 00:23:19,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/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 00:23:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:19,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-10-11 00:23:19,448 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-10-11 00:23:19,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:19,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2021-10-11 00:23:19,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473131856]
[2021-10-11 00:23:19,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2021-10-11 00:23:19,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:19,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-10-11 00:23:19,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182
[2021-10-11 00:23:19,587 INFO L87 Difference]: Start difference. First operand 63 states and 92 transitions. Second operand 14 states.
[2021-10-11 00:23:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:19,991 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions.
[2021-10-11 00:23:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-10-11 00:23:19,992 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37
[2021-10-11 00:23:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:19,998 INFO L225 Difference]: With dead ends: 177
[2021-10-11 00:23:19,998 INFO L226 Difference]: Without dead ends: 117
[2021-10-11 00:23:20,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462
[2021-10-11 00:23:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2021-10-11 00:23:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103.
[2021-10-11 00:23:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states.
[2021-10-11 00:23:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions.
[2021-10-11 00:23:20,044 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37
[2021-10-11 00:23:20,045 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:20,045 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions.
[2021-10-11 00:23:20,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2021-10-11 00:23:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions.
[2021-10-11 00:23:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-10-11 00:23:20,052 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:20,052 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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]
[2021-10-11 00:23:20,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:20,268 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:20,268 INFO L82 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times
[2021-10-11 00:23:20,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:20,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549077080]
[2021-10-11 00:23:20,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:20,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:20,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:20,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:20,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:20,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:20,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2021-10-11 00:23:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2021-10-11 00:23:20,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549077080]
[2021-10-11 00:23:20,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127041858]
[2021-10-11 00:23:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/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 00:23:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:20,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-10-11 00:23:20,509 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2021-10-11 00:23:20,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:20,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15
[2021-10-11 00:23:20,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363108281]
[2021-10-11 00:23:20,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2021-10-11 00:23:20,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:20,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-10-11 00:23:20,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210
[2021-10-11 00:23:20,697 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand 15 states.
[2021-10-11 00:23:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:21,259 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions.
[2021-10-11 00:23:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-10-11 00:23:21,260 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51
[2021-10-11 00:23:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:21,263 INFO L225 Difference]: With dead ends: 255
[2021-10-11 00:23:21,263 INFO L226 Difference]: Without dead ends: 155
[2021-10-11 00:23:21,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552
[2021-10-11 00:23:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2021-10-11 00:23:21,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109.
[2021-10-11 00:23:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states.
[2021-10-11 00:23:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions.
[2021-10-11 00:23:21,288 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51
[2021-10-11 00:23:21,289 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:21,289 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions.
[2021-10-11 00:23:21,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2021-10-11 00:23:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions.
[2021-10-11 00:23:21,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2021-10-11 00:23:21,291 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:21,291 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:21,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2021-10-11 00:23:21,508 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times
[2021-10-11 00:23:21,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:21,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082699210]
[2021-10-11 00:23:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-10-11 00:23:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2021-10-11 00:23:21,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082699210]
[2021-10-11 00:23:21,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223399490]
[2021-10-11 00:23:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/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 00:23:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:21,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-10-11 00:23:21,898 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked.
[2021-10-11 00:23:22,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:22,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18
[2021-10-11 00:23:22,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8477054]
[2021-10-11 00:23:22,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-10-11 00:23:22,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:22,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-10-11 00:23:22,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306
[2021-10-11 00:23:22,130 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand 18 states.
[2021-10-11 00:23:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:22,782 INFO L93 Difference]: Finished difference Result 240 states and 462 transitions.
[2021-10-11 00:23:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-10-11 00:23:22,782 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 93
[2021-10-11 00:23:22,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:22,784 INFO L225 Difference]: With dead ends: 240
[2021-10-11 00:23:22,785 INFO L226 Difference]: Without dead ends: 107
[2021-10-11 00:23:22,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870
[2021-10-11 00:23:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2021-10-11 00:23:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84.
[2021-10-11 00:23:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states.
[2021-10-11 00:23:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions.
[2021-10-11 00:23:22,801 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 93
[2021-10-11 00:23:22,802 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:22,802 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions.
[2021-10-11 00:23:22,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2021-10-11 00:23:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions.
[2021-10-11 00:23:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2021-10-11 00:23:22,804 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:22,804 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 10, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:23,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:23,020 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:23,020 INFO L82 PathProgramCache]: Analyzing trace with hash -895479255, now seen corresponding path program 1 times
[2021-10-11 00:23:23,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:23,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209152635]
[2021-10-11 00:23:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-10-11 00:23:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2021-10-11 00:23:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-10-11 00:23:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 67 proven. 169 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked.
[2021-10-11 00:23:23,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209152635]
[2021-10-11 00:23:23,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709905595]
[2021-10-11 00:23:23,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:23,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-10-11 00:23:23,534 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 54 proven. 149 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked.
[2021-10-11 00:23:23,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:23,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17
[2021-10-11 00:23:23,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787472897]
[2021-10-11 00:23:23,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-10-11 00:23:23,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:23,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-10-11 00:23:23,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272
[2021-10-11 00:23:23,800 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand 17 states.
[2021-10-11 00:23:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:24,255 INFO L93 Difference]: Finished difference Result 169 states and 248 transitions.
[2021-10-11 00:23:24,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-10-11 00:23:24,260 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 161
[2021-10-11 00:23:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:24,265 INFO L225 Difference]: With dead ends: 169
[2021-10-11 00:23:24,265 INFO L226 Difference]: Without dead ends: 93
[2021-10-11 00:23:24,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650
[2021-10-11 00:23:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2021-10-11 00:23:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87.
[2021-10-11 00:23:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2021-10-11 00:23:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions.
[2021-10-11 00:23:24,297 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 161
[2021-10-11 00:23:24,298 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:24,298 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions.
[2021-10-11 00:23:24,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2021-10-11 00:23:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions.
[2021-10-11 00:23:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192
[2021-10-11 00:23:24,303 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:24,304 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 12, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:24,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:24,532 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:24,532 INFO L82 PathProgramCache]: Analyzing trace with hash 410369979, now seen corresponding path program 2 times
[2021-10-11 00:23:24,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:24,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219138431]
[2021-10-11 00:23:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2021-10-11 00:23:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2021-10-11 00:23:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2021-10-11 00:23:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:24,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 122 proven. 192 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked.
[2021-10-11 00:23:25,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219138431]
[2021-10-11 00:23:25,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581246445]
[2021-10-11 00:23:25,087 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_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:25,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-11 00:23:25,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:23:25,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-10-11 00:23:25,207 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 88 proven. 212 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked.
[2021-10-11 00:23:25,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:25,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20
[2021-10-11 00:23:25,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973527527]
[2021-10-11 00:23:25,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-10-11 00:23:25,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:25,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-10-11 00:23:25,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380
[2021-10-11 00:23:25,574 INFO L87 Difference]: Start difference. First operand 87 states and 118 transitions. Second operand 20 states.
[2021-10-11 00:23:26,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:26,257 INFO L93 Difference]: Finished difference Result 201 states and 327 transitions.
[2021-10-11 00:23:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-10-11 00:23:26,258 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 191
[2021-10-11 00:23:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:26,260 INFO L225 Difference]: With dead ends: 201
[2021-10-11 00:23:26,260 INFO L226 Difference]: Without dead ends: 95
[2021-10-11 00:23:26,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870
[2021-10-11 00:23:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2021-10-11 00:23:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92.
[2021-10-11 00:23:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2021-10-11 00:23:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions.
[2021-10-11 00:23:26,272 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 191
[2021-10-11 00:23:26,272 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:26,273 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions.
[2021-10-11 00:23:26,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2021-10-11 00:23:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions.
[2021-10-11 00:23:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2021-10-11 00:23:26,275 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:26,276 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:26,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-10-11 00:23:26,502 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:26,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1967848152, now seen corresponding path program 2 times
[2021-10-11 00:23:26,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:26,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884372538]
[2021-10-11 00:23:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2021-10-11 00:23:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2021-10-11 00:23:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked.
[2021-10-11 00:23:26,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884372538]
[2021-10-11 00:23:26,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820782201]
[2021-10-11 00:23:26,980 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_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:27,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-11 00:23:27,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:23:27,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-10-11 00:23:27,064 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 141 proven. 34 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked.
[2021-10-11 00:23:27,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:27,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 20
[2021-10-11 00:23:27,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905149169]
[2021-10-11 00:23:27,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-10-11 00:23:27,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:27,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-10-11 00:23:27,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380
[2021-10-11 00:23:27,257 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand 20 states.
[2021-10-11 00:23:27,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:27,760 INFO L93 Difference]: Finished difference Result 120 states and 146 transitions.
[2021-10-11 00:23:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-10-11 00:23:27,761 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 147
[2021-10-11 00:23:27,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:27,763 INFO L225 Difference]: With dead ends: 120
[2021-10-11 00:23:27,763 INFO L226 Difference]: Without dead ends: 111
[2021-10-11 00:23:27,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756
[2021-10-11 00:23:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2021-10-11 00:23:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93.
[2021-10-11 00:23:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2021-10-11 00:23:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions.
[2021-10-11 00:23:27,773 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 147
[2021-10-11 00:23:27,774 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:27,774 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions.
[2021-10-11 00:23:27,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2021-10-11 00:23:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions.
[2021-10-11 00:23:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175
[2021-10-11 00:23:27,777 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:27,777 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:27,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:27,992 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:27,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:27,992 INFO L82 PathProgramCache]: Analyzing trace with hash 521886258, now seen corresponding path program 3 times
[2021-10-11 00:23:27,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:27,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295099403]
[2021-10-11 00:23:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2021-10-11 00:23:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2021-10-11 00:23:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:28,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:29,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:29,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:29,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:29,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked.
[2021-10-11 00:23:29,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295099403]
[2021-10-11 00:23:29,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447258555]
[2021-10-11 00:23:29,164 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_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:29,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s)
[2021-10-11 00:23:29,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:23:29,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 103 conjunts are in the unsatisfiable core
[2021-10-11 00:23:29,291 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked.
[2021-10-11 00:23:30,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:30,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36
[2021-10-11 00:23:30,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134969574]
[2021-10-11 00:23:30,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-10-11 00:23:30,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:30,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-10-11 00:23:30,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260
[2021-10-11 00:23:30,407 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 36 states.
[2021-10-11 00:23:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:30,834 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions.
[2021-10-11 00:23:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-10-11 00:23:30,834 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 174
[2021-10-11 00:23:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:30,836 INFO L225 Difference]: With dead ends: 112
[2021-10-11 00:23:30,836 INFO L226 Difference]: Without dead ends: 88
[2021-10-11 00:23:30,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 228 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260
[2021-10-11 00:23:30,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2021-10-11 00:23:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88.
[2021-10-11 00:23:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states.
[2021-10-11 00:23:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions.
[2021-10-11 00:23:30,844 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 174
[2021-10-11 00:23:30,844 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:30,844 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions.
[2021-10-11 00:23:30,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states.
[2021-10-11 00:23:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions.
[2021-10-11 00:23:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202
[2021-10-11 00:23:30,847 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:23:30,847 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:23:31,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:31,064 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:23:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:23:31,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1374317944, now seen corresponding path program 4 times
[2021-10-11 00:23:31,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:23:31,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014518943]
[2021-10-11 00:23:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:23:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-11 00:23:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2021-10-11 00:23:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2021-10-11 00:23:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2021-10-11 00:23:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2021-10-11 00:23:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-10-11 00:23:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-10-11 00:23:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-10-11 00:23:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 155 proven. 209 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked.
[2021-10-11 00:23:31,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014518943]
[2021-10-11 00:23:31,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951070064]
[2021-10-11 00:23:31,520 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_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:23:31,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-11 00:23:31,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:23:31,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 16 conjunts are in the unsatisfiable core
[2021-10-11 00:23:31,621 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:23:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 101 proven. 320 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked.
[2021-10-11 00:23:31,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:23:31,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21
[2021-10-11 00:23:31,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160871574]
[2021-10-11 00:23:31,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2021-10-11 00:23:31,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:23:31,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-10-11 00:23:31,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420
[2021-10-11 00:23:31,976 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 21 states.
[2021-10-11 00:23:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:23:32,288 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions.
[2021-10-11 00:23:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-10-11 00:23:32,288 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 201
[2021-10-11 00:23:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:23:32,289 INFO L225 Difference]: With dead ends: 144
[2021-10-11 00:23:32,289 INFO L226 Difference]: Without dead ends: 0
[2021-10-11 00:23:32,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756
[2021-10-11 00:23:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-10-11 00:23:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-10-11 00:23:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2021-10-11 00:23:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-10-11 00:23:32,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 201
[2021-10-11 00:23:32,291 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:23:32,291 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-10-11 00:23:32,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2021-10-11 00:23:32,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-10-11 00:23:32,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-10-11 00:23:32,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-10-11 00:23:32,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-10-11 00:23:33,147 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 22
[2021-10-11 00:23:33,612 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 32
[2021-10-11 00:23:33,719 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 7
[2021-10-11 00:23:33,721 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-10-11 00:23:33,721 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-10-11 00:23:33,721 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-10-11 00:23:33,721 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-10-11 00:23:33,721 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed.
[2021-10-11 00:23:33,721 INFO L258 CegarLoopResult]: At program point L43(lines 37 44) the Hoare annotation is: (<= 6 ULTIMATE.start_main_~x~0)
[2021-10-11 00:23:33,722 INFO L262 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed.
[2021-10-11 00:23:33,722 INFO L262 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed.
[2021-10-11 00:23:33,722 INFO L258 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 6) (<= 6 ULTIMATE.start_main_~x~0))
[2021-10-11 00:23:33,722 INFO L262 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed.
[2021-10-11 00:23:33,722 INFO L262 CegarLoopResult]: For program point L40-2(lines 40 42) no Hoare annotation was computed.
[2021-10-11 00:23:33,722 INFO L265 CegarLoopResult]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true
[2021-10-11 00:23:33,722 INFO L258 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1)))
[2021-10-11 00:23:33,722 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed.
[2021-10-11 00:23:33,722 INFO L258 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (and (or (<= |fibo2_#in~n| 3) (and (<= |fibo2_#t~ret9| 3) (<= 3 |fibo2_#t~ret9|)) (<= 6 |fibo2_#in~n|)) (= fibo2_~n |fibo2_#in~n|) (or (and (<= |fibo2_#t~ret9| 1) (<= 1 |fibo2_#t~ret9|)) (<= 5 fibo2_~n)) (not (<= |fibo2_#in~n| 1)))
[2021-10-11 00:23:33,722 INFO L262 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed.
[2021-10-11 00:23:33,722 INFO L262 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed.
[2021-10-11 00:23:33,722 INFO L262 CegarLoopResult]: For program point L20(lines 20 26) no Hoare annotation was computed.
[2021-10-11 00:23:33,722 INFO L262 CegarLoopResult]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed.
[2021-10-11 00:23:33,723 INFO L262 CegarLoopResult]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed.
[2021-10-11 00:23:33,723 INFO L265 CegarLoopResult]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true
[2021-10-11 00:23:33,723 INFO L258 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (< 1 fibo1_~n) (= fibo1_~n |fibo1_#in~n|))
[2021-10-11 00:23:33,723 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed.
[2021-10-11 00:23:33,723 INFO L258 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (or (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1)) (<= 4 |fibo1_#in~n|)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= |fibo1_#in~n| 5) .cse0) (and (<= 5 |fibo1_#t~ret7|) .cse0 (<= |fibo1_#t~ret7| 5)) (and (<= 7 |fibo1_#in~n|) .cse0))) (or (<= |fibo1_#in~n| 3) (<= 5 |fibo1_#in~n|) (and (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|))))
[2021-10-11 00:23:33,723 INFO L262 CegarLoopResult]: For program point L12(lines 12 16) no Hoare annotation was computed.
[2021-10-11 00:23:33,723 INFO L262 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed.
[2021-10-11 00:23:33,724 INFO L262 CegarLoopResult]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed.
[2021-10-11 00:23:33,724 INFO L262 CegarLoopResult]: For program point L10(lines 10 16) no Hoare annotation was computed.
[2021-10-11 00:23:33,724 INFO L262 CegarLoopResult]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed.
[2021-10-11 00:23:33,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:23:33 BoogieIcfgContainer
[2021-10-11 00:23:33,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-11 00:23:33,735 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-11 00:23:33,735 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-10-11 00:23:33,736 INFO L275 PluginConnector]: Witness Printer initialized
[2021-10-11 00:23:33,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:16" (3/4) ...
[2021-10-11 00:23:33,738 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-10-11 00:23:33,742 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2
[2021-10-11 00:23:33,743 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1
[2021-10-11 00:23:33,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges
[2021-10-11 00:23:33,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2021-10-11 00:23:33,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-11 00:23:33,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-11 00:23:33,778 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53ee0a6-926d-443b-b4de-f87a5af55b46/bin/uautomizer-Z5i5R5N3CC/witness.graphml
[2021-10-11 00:23:33,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-11 00:23:33,779 INFO L168 Benchmark]: Toolchain (without parser) took 18343.63 ms. Allocated memory was 146.8 MB in the beginning and 371.2 MB in the end (delta: 224.4 MB). Free memory was 116.1 MB in the beginning and 276.0 MB in the end (delta: -159.9 MB). Peak memory consumption was 64.5 MB. Max. memory is 16.1 GB.
[2021-10-11 00:23:33,780 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 92.3 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 00:23:33,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.70 ms. Allocated memory is still 146.8 MB. Free memory was 116.1 MB in the beginning and 123.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-11 00:23:33,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.86 ms. Allocated memory is still 146.8 MB. Free memory was 123.5 MB in the beginning and 122.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 00:23:33,781 INFO L168 Benchmark]: Boogie Preprocessor took 30.93 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 121.4 MB in the end (delta: 950.5 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 00:23:33,782 INFO L168 Benchmark]: RCFGBuilder took 422.59 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 107.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB.
[2021-10-11 00:23:33,782 INFO L168 Benchmark]: TraceAbstraction took 17441.98 ms. Allocated memory was 146.8 MB in the beginning and 371.2 MB in the end (delta: 224.4 MB). Free memory was 107.8 MB in the beginning and 279.2 MB in the end (delta: -171.4 MB). Peak memory consumption was 168.3 MB. Max. memory is 16.1 GB.
[2021-10-11 00:23:33,783 INFO L168 Benchmark]: Witness Printer took 43.21 ms. Allocated memory is still 371.2 MB. Free memory was 279.2 MB in the beginning and 276.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-11 00:23:33,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.59 ms. Allocated memory is still 92.3 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 355.70 ms. Allocated memory is still 146.8 MB. Free memory was 116.1 MB in the beginning and 123.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
* Boogie Procedure Inliner took 37.86 ms. Allocated memory is still 146.8 MB. Free memory was 123.5 MB in the beginning and 122.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB.
* Boogie Preprocessor took 30.93 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 121.4 MB in the end (delta: 950.5 kB). There was no memory consumed. Max. memory is 16.1 GB.
* RCFGBuilder took 422.59 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 107.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 17441.98 ms. Allocated memory was 146.8 MB in the beginning and 371.2 MB in the end (delta: 224.4 MB). Free memory was 107.8 MB in the beginning and 279.2 MB in the end (delta: -171.4 MB). Peak memory consumption was 168.3 MB. Max. memory is 16.1 GB.
* Witness Printer took 43.21 ms. Allocated memory is still 371.2 MB. Free memory was 279.2 MB in the beginning and 276.0 MB in the end (delta: 3.1 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: 41]: 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
- InvariantResult [Line: 37]: Loop Invariant
Derived loop invariant: 6 <= x
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.1s, OverallIterations: 13, TraceHistogramMax: 15, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 379 SDtfs, 574 SDslu, 3459 SDs, 0 SdLazy, 3948 SolverSat, 577 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1719 GetRequests, 1449 SyntacticMatches, 16 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 116 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 404 PreInvPairs, 552 NumberOfFragments, 115 HoareAnnotationTreeSize, 404 FomulaSimplifications, 2598 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3569 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 2297 NumberOfCodeBlocks, 2267 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 2273 ConstructedInterpolants, 0 QuantifiedInterpolants, 681065 SizeOfPredicates, 50 NumberOfNonLiveVariables, 2725 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 6560/8684 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...