./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 678e0110
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8e4dbe5a9ab518912f1108432d43f490ec977d7
..........................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8e4dbe5a9ab518912f1108432d43f490ec977d7
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE
--- Real Ultimate output ---
This is Ultimate 0.1.24-678e011
[2019-11-19 21:13:47,354 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-11-19 21:13:47,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-19 21:13:47,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-19 21:13:47,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-19 21:13:47,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-19 21:13:47,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-11-19 21:13:47,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-11-19 21:13:47,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-11-19 21:13:47,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-11-19 21:13:47,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-11-19 21:13:47,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-11-19 21:13:47,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-11-19 21:13:47,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-11-19 21:13:47,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-11-19 21:13:47,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-11-19 21:13:47,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-19 21:13:47,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-19 21:13:47,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-19 21:13:47,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-19 21:13:47,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-19 21:13:47,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-19 21:13:47,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-11-19 21:13:47,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-19 21:13:47,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-11-19 21:13:47,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-11-19 21:13:47,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-11-19 21:13:47,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-11-19 21:13:47,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-11-19 21:13:47,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-11-19 21:13:47,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-11-19 21:13:47,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-11-19 21:13:47,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-11-19 21:13:47,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2019-11-19 21:13:47,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-11-19 21:13:47,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2019-11-19 21:13:47,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-11-19 21:13:47,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-11-19 21:13:47,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2019-11-19 21:13:47,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2019-11-19 21:13:47,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2019-11-19 21:13:47,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-19 21:13:47,493 INFO L113 SettingsManager]: Loading preferences was successful
[2019-11-19 21:13:47,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-19 21:13:47,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-19 21:13:47,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-11-19 21:13:47,503 INFO L138 SettingsManager]: * Use SBE=true
[2019-11-19 21:13:47,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-19 21:13:47,504 INFO L138 SettingsManager]: * sizeof long=4
[2019-11-19 21:13:47,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-11-19 21:13:47,504 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-11-19 21:13:47,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-11-19 21:13:47,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-11-19 21:13:47,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-19 21:13:47,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-11-19 21:13:47,505 INFO L138 SettingsManager]: * sizeof long double=12
[2019-11-19 21:13:47,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-11-19 21:13:47,508 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-11-19 21:13:47,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-11-19 21:13:47,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-19 21:13:47,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-11-19 21:13:47,509 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-11-19 21:13:47,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-11-19 21:13:47,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-19 21:13:47,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-19 21:13:47,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-11-19 21:13:47,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-19 21:13:47,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-11-19 21:13:47,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-19 21:13:47,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-19 21:13:47,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
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(__VERIFIER_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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7
[2019-11-19 21:13:47,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-19 21:13:47,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-19 21:13:47,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-19 21:13:47,867 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-11-19 21:13:47,867 INFO L275 PluginConnector]: CDTParser initialized
[2019-11-19 21:13:47,869 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c
[2019-11-19 21:13:47,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c006f461/4d8993270dd84af1a0d921f13ce9ab16/FLAGea376df22
[2019-11-19 21:13:48,438 INFO L306 CDTParser]: Found 1 translation units.
[2019-11-19 21:13:48,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c
[2019-11-19 21:13:48,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c006f461/4d8993270dd84af1a0d921f13ce9ab16/FLAGea376df22
[2019-11-19 21:13:48,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c006f461/4d8993270dd84af1a0d921f13ce9ab16
[2019-11-19 21:13:48,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-19 21:13:48,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2019-11-19 21:13:48,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-19 21:13:48,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-19 21:13:48,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-19 21:13:48,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:48" (1/1) ...
[2019-11-19 21:13:48,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a0f889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:48, skipping insertion in model container
[2019-11-19 21:13:48,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:48" (1/1) ...
[2019-11-19 21:13:48,832 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-11-19 21:13:48,862 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-11-19 21:13:49,142 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-11-19 21:13:49,150 INFO L188 MainTranslator]: Completed pre-run
[2019-11-19 21:13:49,179 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-11-19 21:13:49,262 INFO L192 MainTranslator]: Completed translation
[2019-11-19 21:13:49,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49 WrapperNode
[2019-11-19 21:13:49,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-19 21:13:49,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-19 21:13:49,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-19 21:13:49,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-19 21:13:49,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
[2019-11-19 21:13:49,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
[2019-11-19 21:13:49,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-19 21:13:49,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-19 21:13:49,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-19 21:13:49,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-11-19 21:13:49,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
[2019-11-19 21:13:49,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
[2019-11-19 21:13:49,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
[2019-11-19 21:13:49,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
[2019-11-19 21:13:49,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
[2019-11-19 21:13:49,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
[2019-11-19 21:13:49,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
[2019-11-19 21:13:49,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-19 21:13:49,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-19 21:13:49,351 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-11-19 21:13:49,352 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-11-19 21:13:49,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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
[2019-11-19 21:13:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-11-19 21:13:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2019-11-19 21:13:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-19 21:13:49,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-19 21:13:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2019-11-19 21:13:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-11-19 21:13:49,863 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-19 21:13:49,863 INFO L285 CfgBuilder]: Removed 18 assume(true) statements.
[2019-11-19 21:13:49,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:49 BoogieIcfgContainer
[2019-11-19 21:13:49,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-19 21:13:49,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-19 21:13:49,866 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-11-19 21:13:49,869 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-11-19 21:13:49,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:13:48" (1/3) ...
[2019-11-19 21:13:49,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b09273f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:49, skipping insertion in model container
[2019-11-19 21:13:49,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:49" (2/3) ...
[2019-11-19 21:13:49,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b09273f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:49, skipping insertion in model container
[2019-11-19 21:13:49,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:49" (3/3) ...
[2019-11-19 21:13:49,872 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c
[2019-11-19 21:13:49,880 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-19 21:13:49,889 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-19 21:13:49,903 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-19 21:13:49,923 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-11-19 21:13:49,923 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-11-19 21:13:49,923 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-19 21:13:49,924 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-19 21:13:49,924 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-19 21:13:49,924 INFO L378 AbstractCegarLoop]: Difference is false
[2019-11-19 21:13:49,925 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-19 21:13:49,925 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-19 21:13:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states.
[2019-11-19 21:13:49,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2019-11-19 21:13:49,944 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:49,946 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:49,946 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:49,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:49,951 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times
[2019-11-19 21:13:49,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-19 21:13:49,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789157870]
[2019-11-19 21:13:49,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-19 21:13:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:50,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789157870]
[2019-11-19 21:13:50,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:50,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-19 21:13:50,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571086317]
[2019-11-19 21:13:50,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-11-19 21:13:50,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-19 21:13:50,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-11-19 21:13:50,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-19 21:13:50,120 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states.
[2019-11-19 21:13:50,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:50,143 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions.
[2019-11-19 21:13:50,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2019-11-19 21:13:50,145 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10
[2019-11-19 21:13:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:50,157 INFO L225 Difference]: With dead ends: 62
[2019-11-19 21:13:50,157 INFO L226 Difference]: Without dead ends: 29
[2019-11-19 21:13:50,161 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-19 21:13:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2019-11-19 21:13:50,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2019-11-19 21:13:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2019-11-19 21:13:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions.
[2019-11-19 21:13:50,198 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10
[2019-11-19 21:13:50,199 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:50,199 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions.
[2019-11-19 21:13:50,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-11-19 21:13:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions.
[2019-11-19 21:13:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2019-11-19 21:13:50,201 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:50,201 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:50,201 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:50,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:50,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times
[2019-11-19 21:13:50,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-19 21:13:50,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354581612]
[2019-11-19 21:13:50,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-19 21:13:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:50,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354581612]
[2019-11-19 21:13:50,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:50,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-19 21:13:50,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204663753]
[2019-11-19 21:13:50,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-19 21:13:50,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-19 21:13:50,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-19 21:13:50,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-19 21:13:50,279 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states.
[2019-11-19 21:13:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:50,389 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions.
[2019-11-19 21:13:50,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2019-11-19 21:13:50,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11
[2019-11-19 21:13:50,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:50,391 INFO L225 Difference]: With dead ends: 53
[2019-11-19 21:13:50,391 INFO L226 Difference]: Without dead ends: 44
[2019-11-19 21:13:50,393 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-19 21:13:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2019-11-19 21:13:50,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31.
[2019-11-19 21:13:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2019-11-19 21:13:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions.
[2019-11-19 21:13:50,401 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11
[2019-11-19 21:13:50,402 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:50,402 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions.
[2019-11-19 21:13:50,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-19 21:13:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions.
[2019-11-19 21:13:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2019-11-19 21:13:50,403 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:50,404 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:50,404 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:50,405 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times
[2019-11-19 21:13:50,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-19 21:13:50,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080799274]
[2019-11-19 21:13:50,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-19 21:13:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:50,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080799274]
[2019-11-19 21:13:50,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:50,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-19 21:13:50,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470039027]
[2019-11-19 21:13:50,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-19 21:13:50,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-19 21:13:50,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-19 21:13:50,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-19 21:13:50,511 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states.
[2019-11-19 21:13:50,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:50,586 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions.
[2019-11-19 21:13:50,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2019-11-19 21:13:50,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14
[2019-11-19 21:13:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:50,589 INFO L225 Difference]: With dead ends: 55
[2019-11-19 21:13:50,589 INFO L226 Difference]: Without dead ends: 46
[2019-11-19 21:13:50,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-19 21:13:50,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2019-11-19 21:13:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31.
[2019-11-19 21:13:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2019-11-19 21:13:50,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions.
[2019-11-19 21:13:50,600 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14
[2019-11-19 21:13:50,601 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:50,602 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions.
[2019-11-19 21:13:50,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-19 21:13:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions.
[2019-11-19 21:13:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2019-11-19 21:13:50,607 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:50,607 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:50,607 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:50,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:50,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times
[2019-11-19 21:13:50,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-19 21:13:50,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675302982]
[2019-11-19 21:13:50,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-19 21:13:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-11-19 21:13:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-11-19 21:13:50,695 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2019-11-19 21:13:50,695 INFO L475 BasicCegarLoop]: Counterexample might be feasible
[2019-11-19 21:13:50,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:13:50 BoogieIcfgContainer
[2019-11-19 21:13:50,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-11-19 21:13:50,725 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2019-11-19 21:13:50,725 INFO L271 PluginConnector]: Initializing Witness Printer...
[2019-11-19 21:13:50,725 INFO L275 PluginConnector]: Witness Printer initialized
[2019-11-19 21:13:50,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:49" (3/4) ...
[2019-11-19 21:13:50,728 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2019-11-19 21:13:50,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2019-11-19 21:13:50,731 INFO L168 Benchmark]: Toolchain (without parser) took 1917.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -63.9 MB). Peak memory consumption was 49.8 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:50,732 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-11-19 21:13:50,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:50,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:50,735 INFO L168 Benchmark]: Boogie Preprocessor took 36.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-11-19 21:13:50,736 INFO L168 Benchmark]: RCFGBuilder took 513.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:50,737 INFO L168 Benchmark]: TraceAbstraction took 858.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:50,738 INFO L168 Benchmark]: Witness Printer took 4.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-11-19 21:13:50,746 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB.
* CACSL2BoogieTranslator took 449.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB.
* Boogie Procedure Inliner took 49.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB.
* Boogie Preprocessor took 36.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
* RCFGBuilder took 513.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB.
* TraceAbstraction took 858.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 11.5 GB.
* Witness Printer took 4.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74.
Possible FailurePath:
[L73] float x = 0.0f;
[L74] float y = -0.0f;
[L21] __uint32_t w;
[L24] ieee_float_shape_type gf_u;
[L25] gf_u.value = (x)
[L26] EXPR gf_u.word
[L26] (w) = gf_u.word
[L29] COND FALSE !(w == 0x00000000 || w == 0x80000000)
[L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) ||
(w >= 0x80800000 && w <= 0xff7fffff))
[L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) ||
(w >= 0x80000001 && w <= 0x807fffff))
[L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000)
[L40] return 0;
[L44] COND TRUE __fpclassify_float(x) == 0
[L45] return y;
[L75] float res = fmax_float(x, y);
[L78] EXPR res == 0.0f && __signbit_float(res) == 0
[L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0)
[L79] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...
### Bit-precise run ###
This is Ultimate 0.1.24-678e011
[2019-11-19 21:13:52,752 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-11-19 21:13:52,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-11-19 21:13:52,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-11-19 21:13:52,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-11-19 21:13:52,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-11-19 21:13:52,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2019-11-19 21:13:52,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2019-11-19 21:13:52,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2019-11-19 21:13:52,863 INFO L113 SettingsManager]: Loading preferences was successful
[2019-11-19 21:13:52,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-19 21:13:52,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-19 21:13:52,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-11-19 21:13:52,866 INFO L138 SettingsManager]: * Use SBE=true
[2019-11-19 21:13:52,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-19 21:13:52,867 INFO L138 SettingsManager]: * sizeof long=4
[2019-11-19 21:13:52,867 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-11-19 21:13:52,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-11-19 21:13:52,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-11-19 21:13:52,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-19 21:13:52,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-11-19 21:13:52,869 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2019-11-19 21:13:52,869 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2019-11-19 21:13:52,869 INFO L138 SettingsManager]: * sizeof long double=12
[2019-11-19 21:13:52,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-11-19 21:13:52,870 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-11-19 21:13:52,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-11-19 21:13:52,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-19 21:13:52,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-11-19 21:13:52,871 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-11-19 21:13:52,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-11-19 21:13:52,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-19 21:13:52,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-19 21:13:52,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-11-19 21:13:52,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-19 21:13:52,872 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2019-11-19 21:13:52,872 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt
[2019-11-19 21:13:52,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-19 21:13:52,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-19 21:13:52,873 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
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(__VERIFIER_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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7
[2019-11-19 21:13:53,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-19 21:13:53,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-19 21:13:53,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-19 21:13:53,217 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-11-19 21:13:53,217 INFO L275 PluginConnector]: CDTParser initialized
[2019-11-19 21:13:53,219 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c
[2019-11-19 21:13:53,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dba127a7/fc94fbdef8044c1396b2bd881daee489/FLAGc1bc18d09
[2019-11-19 21:13:53,810 INFO L306 CDTParser]: Found 1 translation units.
[2019-11-19 21:13:53,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c
[2019-11-19 21:13:53,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dba127a7/fc94fbdef8044c1396b2bd881daee489/FLAGc1bc18d09
[2019-11-19 21:13:54,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dba127a7/fc94fbdef8044c1396b2bd881daee489
[2019-11-19 21:13:54,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-19 21:13:54,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2019-11-19 21:13:54,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-19 21:13:54,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-19 21:13:54,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-19 21:13:54,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407d3b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54, skipping insertion in model container
[2019-11-19 21:13:54,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,257 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-11-19 21:13:54,277 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-11-19 21:13:54,560 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-11-19 21:13:54,570 INFO L188 MainTranslator]: Completed pre-run
[2019-11-19 21:13:54,623 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-11-19 21:13:54,725 INFO L192 MainTranslator]: Completed translation
[2019-11-19 21:13:54,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54 WrapperNode
[2019-11-19 21:13:54,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-19 21:13:54,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-19 21:13:54,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-19 21:13:54,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-19 21:13:54,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-19 21:13:54,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-19 21:13:54,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-19 21:13:54,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-11-19 21:13:54,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
[2019-11-19 21:13:54,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-19 21:13:54,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-19 21:13:54,831 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-11-19 21:13:54,831 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-11-19 21:13:54,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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
[2019-11-19 21:13:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-11-19 21:13:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2019-11-19 21:13:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-19 21:13:54,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-19 21:13:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4
[2019-11-19 21:13:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-11-19 21:13:55,320 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-19 21:13:55,320 INFO L285 CfgBuilder]: Removed 18 assume(true) statements.
[2019-11-19 21:13:55,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:55 BoogieIcfgContainer
[2019-11-19 21:13:55,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-19 21:13:55,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-19 21:13:55,323 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-11-19 21:13:55,325 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-11-19 21:13:55,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:13:54" (1/3) ...
[2019-11-19 21:13:55,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28549271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:55, skipping insertion in model container
[2019-11-19 21:13:55,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:54" (2/3) ...
[2019-11-19 21:13:55,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28549271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:55, skipping insertion in model container
[2019-11-19 21:13:55,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:55" (3/3) ...
[2019-11-19 21:13:55,330 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c
[2019-11-19 21:13:55,341 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-19 21:13:55,349 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-19 21:13:55,361 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-19 21:13:55,386 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-11-19 21:13:55,386 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-11-19 21:13:55,386 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-19 21:13:55,386 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-19 21:13:55,386 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-19 21:13:55,387 INFO L378 AbstractCegarLoop]: Difference is false
[2019-11-19 21:13:55,387 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-19 21:13:55,387 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-19 21:13:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states.
[2019-11-19 21:13:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2019-11-19 21:13:55,410 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:55,412 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:55,412 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:55,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:55,420 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times
[2019-11-19 21:13:55,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF
[2019-11-19 21:13:55,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404656733]
[2019-11-19 21:13:55,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3
[2019-11-19 21:13:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:55,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core
[2019-11-19 21:13:55,533 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2019-11-19 21:13:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:55,546 INFO L320 TraceCheckSpWp]: Computing backward predicates...
[2019-11-19 21:13:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:55,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404656733]
[2019-11-19 21:13:55,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:55,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2019-11-19 21:13:55,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708117397]
[2019-11-19 21:13:55,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-11-19 21:13:55,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2019-11-19 21:13:55,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-11-19 21:13:55,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-19 21:13:55,577 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states.
[2019-11-19 21:13:55,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:55,597 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions.
[2019-11-19 21:13:55,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2019-11-19 21:13:55,598 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10
[2019-11-19 21:13:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:55,609 INFO L225 Difference]: With dead ends: 62
[2019-11-19 21:13:55,609 INFO L226 Difference]: Without dead ends: 29
[2019-11-19 21:13:55,613 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-19 21:13:55,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2019-11-19 21:13:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2019-11-19 21:13:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2019-11-19 21:13:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions.
[2019-11-19 21:13:55,651 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10
[2019-11-19 21:13:55,651 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:55,651 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions.
[2019-11-19 21:13:55,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-11-19 21:13:55,652 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions.
[2019-11-19 21:13:55,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2019-11-19 21:13:55,653 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:55,653 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:55,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3
[2019-11-19 21:13:55,867 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:55,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times
[2019-11-19 21:13:55,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF
[2019-11-19 21:13:55,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171945891]
[2019-11-19 21:13:55,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3
[2019-11-19 21:13:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:55,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core
[2019-11-19 21:13:55,950 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2019-11-19 21:13:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:55,980 INFO L320 TraceCheckSpWp]: Computing backward predicates...
[2019-11-19 21:13:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:56,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171945891]
[2019-11-19 21:13:56,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:56,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2019-11-19 21:13:56,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927238597]
[2019-11-19 21:13:56,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-19 21:13:56,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2019-11-19 21:13:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-19 21:13:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-19 21:13:56,024 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states.
[2019-11-19 21:13:56,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:56,169 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions.
[2019-11-19 21:13:56,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2019-11-19 21:13:56,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11
[2019-11-19 21:13:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:56,171 INFO L225 Difference]: With dead ends: 68
[2019-11-19 21:13:56,171 INFO L226 Difference]: Without dead ends: 59
[2019-11-19 21:13:56,174 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2019-11-19 21:13:56,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2019-11-19 21:13:56,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31.
[2019-11-19 21:13:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2019-11-19 21:13:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions.
[2019-11-19 21:13:56,186 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11
[2019-11-19 21:13:56,187 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:56,187 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions.
[2019-11-19 21:13:56,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-19 21:13:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions.
[2019-11-19 21:13:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2019-11-19 21:13:56,188 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:56,189 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:56,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3
[2019-11-19 21:13:56,392 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:56,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times
[2019-11-19 21:13:56,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF
[2019-11-19 21:13:56,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242651462]
[2019-11-19 21:13:56,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3
[2019-11-19 21:13:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:56,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core
[2019-11-19 21:13:56,454 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2019-11-19 21:13:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:56,493 INFO L320 TraceCheckSpWp]: Computing backward predicates...
[2019-11-19 21:13:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:56,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242651462]
[2019-11-19 21:13:56,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:56,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4
[2019-11-19 21:13:56,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310325842]
[2019-11-19 21:13:56,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-19 21:13:56,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2019-11-19 21:13:56,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-19 21:13:56,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-19 21:13:56,540 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states.
[2019-11-19 21:13:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:56,614 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions.
[2019-11-19 21:13:56,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2019-11-19 21:13:56,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14
[2019-11-19 21:13:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:56,616 INFO L225 Difference]: With dead ends: 52
[2019-11-19 21:13:56,616 INFO L226 Difference]: Without dead ends: 26
[2019-11-19 21:13:56,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-19 21:13:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2019-11-19 21:13:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2019-11-19 21:13:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2019-11-19 21:13:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions.
[2019-11-19 21:13:56,623 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14
[2019-11-19 21:13:56,623 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:56,623 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions.
[2019-11-19 21:13:56,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-19 21:13:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions.
[2019-11-19 21:13:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2019-11-19 21:13:56,625 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:56,625 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:56,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3
[2019-11-19 21:13:56,848 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:56,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times
[2019-11-19 21:13:56,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF
[2019-11-19 21:13:56,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127842571]
[2019-11-19 21:13:56,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3
[2019-11-19 21:13:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:56,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core
[2019-11-19 21:13:56,913 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2019-11-19 21:13:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:56,934 INFO L320 TraceCheckSpWp]: Computing backward predicates...
[2019-11-19 21:13:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:56,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127842571]
[2019-11-19 21:13:56,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:56,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2019-11-19 21:13:56,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178476545]
[2019-11-19 21:13:56,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-19 21:13:56,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2019-11-19 21:13:56,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-19 21:13:56,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-19 21:13:56,956 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states.
[2019-11-19 21:13:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:57,026 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions.
[2019-11-19 21:13:57,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2019-11-19 21:13:57,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16
[2019-11-19 21:13:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:57,029 INFO L225 Difference]: With dead ends: 61
[2019-11-19 21:13:57,029 INFO L226 Difference]: Without dead ends: 52
[2019-11-19 21:13:57,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2019-11-19 21:13:57,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2019-11-19 21:13:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28.
[2019-11-19 21:13:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2019-11-19 21:13:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions.
[2019-11-19 21:13:57,036 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16
[2019-11-19 21:13:57,037 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:57,037 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions.
[2019-11-19 21:13:57,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-19 21:13:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions.
[2019-11-19 21:13:57,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2019-11-19 21:13:57,038 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:57,039 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:57,253 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3
[2019-11-19 21:13:57,253 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:57,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:57,254 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times
[2019-11-19 21:13:57,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF
[2019-11-19 21:13:57,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584437413]
[2019-11-19 21:13:57,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3
[2019-11-19 21:13:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:57,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-19 21:13:57,320 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2019-11-19 21:13:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:57,355 INFO L320 TraceCheckSpWp]: Computing backward predicates...
[2019-11-19 21:13:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:57,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584437413]
[2019-11-19 21:13:57,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:57,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2019-11-19 21:13:57,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129404520]
[2019-11-19 21:13:57,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-19 21:13:57,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2019-11-19 21:13:57,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-19 21:13:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-19 21:13:57,399 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states.
[2019-11-19 21:13:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:57,422 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions.
[2019-11-19 21:13:57,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-11-19 21:13:57,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18
[2019-11-19 21:13:57,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:57,425 INFO L225 Difference]: With dead ends: 38
[2019-11-19 21:13:57,425 INFO L226 Difference]: Without dead ends: 28
[2019-11-19 21:13:57,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-19 21:13:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2019-11-19 21:13:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2019-11-19 21:13:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2019-11-19 21:13:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions.
[2019-11-19 21:13:57,438 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18
[2019-11-19 21:13:57,439 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:57,443 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions.
[2019-11-19 21:13:57,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-19 21:13:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions.
[2019-11-19 21:13:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2019-11-19 21:13:57,446 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:57,446 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:57,660 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3
[2019-11-19 21:13:57,661 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:57,661 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times
[2019-11-19 21:13:57,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF
[2019-11-19 21:13:57,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302648188]
[2019-11-19 21:13:57,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3
[2019-11-19 21:13:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:57,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core
[2019-11-19 21:13:57,726 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2019-11-19 21:13:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:57,771 INFO L320 TraceCheckSpWp]: Computing backward predicates...
[2019-11-19 21:13:57,773 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-19 21:13:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:57,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302648188]
[2019-11-19 21:13:57,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:57,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9
[2019-11-19 21:13:57,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780898858]
[2019-11-19 21:13:57,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-19 21:13:57,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2019-11-19 21:13:57,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-19 21:13:57,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2019-11-19 21:13:57,828 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states.
[2019-11-19 21:13:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:57,939 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions.
[2019-11-19 21:13:57,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2019-11-19 21:13:57,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18
[2019-11-19 21:13:57,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:57,940 INFO L225 Difference]: With dead ends: 40
[2019-11-19 21:13:57,940 INFO L226 Difference]: Without dead ends: 37
[2019-11-19 21:13:57,941 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2019-11-19 21:13:57,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2019-11-19 21:13:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30.
[2019-11-19 21:13:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2019-11-19 21:13:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions.
[2019-11-19 21:13:57,948 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18
[2019-11-19 21:13:57,948 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:57,948 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions.
[2019-11-19 21:13:57,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-19 21:13:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions.
[2019-11-19 21:13:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2019-11-19 21:13:57,949 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:57,950 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:58,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3
[2019-11-19 21:13:58,158 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:58,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:58,158 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times
[2019-11-19 21:13:58,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF
[2019-11-19 21:13:58,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495925937]
[2019-11-19 21:13:58,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3
[2019-11-19 21:13:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-19 21:13:58,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core
[2019-11-19 21:13:58,230 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2019-11-19 21:13:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:58,267 INFO L320 TraceCheckSpWp]: Computing backward predicates...
[2019-11-19 21:13:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-19 21:13:58,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495925937]
[2019-11-19 21:13:58,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2019-11-19 21:13:58,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5
[2019-11-19 21:13:58,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550424103]
[2019-11-19 21:13:58,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-19 21:13:58,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2019-11-19 21:13:58,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-19 21:13:58,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-19 21:13:58,306 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states.
[2019-11-19 21:13:58,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-19 21:13:58,373 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions.
[2019-11-19 21:13:58,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2019-11-19 21:13:58,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19
[2019-11-19 21:13:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-19 21:13:58,380 INFO L225 Difference]: With dead ends: 43
[2019-11-19 21:13:58,380 INFO L226 Difference]: Without dead ends: 23
[2019-11-19 21:13:58,381 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2019-11-19 21:13:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2019-11-19 21:13:58,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2019-11-19 21:13:58,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2019-11-19 21:13:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions.
[2019-11-19 21:13:58,388 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19
[2019-11-19 21:13:58,389 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-19 21:13:58,389 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions.
[2019-11-19 21:13:58,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-19 21:13:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions.
[2019-11-19 21:13:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2019-11-19 21:13:58,391 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-19 21:13:58,391 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-19 21:13:58,605 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3
[2019-11-19 21:13:58,605 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-19 21:13:58,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-19 21:13:58,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times
[2019-11-19 21:13:58,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF
[2019-11-19 21:13:58,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109107745]
[2019-11-19 21:13:58,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3
[2019-11-19 21:13:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-11-19 21:13:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-11-19 21:13:58,863 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2019-11-19 21:13:58,864 INFO L475 BasicCegarLoop]: Counterexample might be feasible
[2019-11-19 21:13:59,065 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3
[2019-11-19 21:13:59,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:13:59 BoogieIcfgContainer
[2019-11-19 21:13:59,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-11-19 21:13:59,106 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2019-11-19 21:13:59,106 INFO L271 PluginConnector]: Initializing Witness Printer...
[2019-11-19 21:13:59,106 INFO L275 PluginConnector]: Witness Printer initialized
[2019-11-19 21:13:59,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:55" (3/4) ...
[2019-11-19 21:13:59,109 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2019-11-19 21:13:59,173 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2019-11-19 21:13:59,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2019-11-19 21:13:59,176 INFO L168 Benchmark]: Toolchain (without parser) took 4936.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 961.7 MB in the beginning and 881.2 MB in the end (delta: 80.5 MB). Peak memory consumption was 199.5 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:59,177 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-11-19 21:13:59,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:59,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:59,179 INFO L168 Benchmark]: Boogie Preprocessor took 35.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-11-19 21:13:59,179 INFO L168 Benchmark]: RCFGBuilder took 490.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:59,180 INFO L168 Benchmark]: TraceAbstraction took 3782.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 888.0 MB in the end (delta: 193.0 MB). Peak memory consumption was 193.0 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:59,181 INFO L168 Benchmark]: Witness Printer took 67.66 ms. Allocated memory is still 1.1 GB. Free memory was 888.0 MB in the beginning and 881.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB.
[2019-11-19 21:13:59,184 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB.
* CACSL2BoogieTranslator took 486.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB.
* Boogie Procedure Inliner took 68.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB.
* Boogie Preprocessor took 35.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
* RCFGBuilder took 490.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB.
* TraceAbstraction took 3782.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 888.0 MB in the end (delta: 193.0 MB). Peak memory consumption was 193.0 MB. Max. memory is 11.5 GB.
* Witness Printer took 67.66 ms. Allocated memory is still 1.1 GB. Free memory was 888.0 MB in the beginning and 881.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L73] float x = 0.0f;
[L74] float y = -0.0f;
[L21] __uint32_t w;
[L24] ieee_float_shape_type gf_u;
[L25] gf_u.value = (x)
[L26] EXPR gf_u.word
[L26] (w) = gf_u.word
[L29] COND TRUE w == 0x00000000 || w == 0x80000000
[L30] return 2;
[L44] COND FALSE !(__fpclassify_float(x) == 0)
[L21] __uint32_t w;
[L24] ieee_float_shape_type gf_u;
[L25] gf_u.value = (x)
[L26] EXPR gf_u.word
[L26] (w) = gf_u.word
[L29] COND TRUE w == 0x00000000 || w == 0x80000000
[L30] return 2;
[L48] COND FALSE !(__fpclassify_float(y) == 0)
[L51] EXPR x > y ? x : y
[L51] return x > y ? x : y;
[L75] float res = fmax_float(x, y);
[L78] EXPR res == 0.0f && __signbit_float(res) == 0
[L55] __uint32_t w;
[L58] ieee_float_shape_type gf_u;
[L59] gf_u.value = (x)
[L60] EXPR gf_u.word
[L60] (w) = gf_u.word
[L63] return (w & 0x80000000) != 0;
[L78] EXPR res == 0.0f && __signbit_float(res) == 0
[L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0)
[L79] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 191 SDslu, 324 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7943 SizeOfPredicates, 27 NumberOfNonLiveVariables, 321 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...