./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version ee8e70e7
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0dca3295f12b1ef36cf31c463cf879069525072f
........................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0dca3295f12b1ef36cf31c463cf879069525072f
.............................................................................................................................................................................................................................................................................................................................................................
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 0.2.0-ee8e70e
[2020-10-24 15:06:11,872 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-24 15:06:11,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-24 15:06:11,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-24 15:06:11,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-24 15:06:11,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-24 15:06:11,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-24 15:06:11,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-24 15:06:11,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-24 15:06:11,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-24 15:06:11,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-10-24 15:06:11,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-24 15:06:11,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-24 15:06:11,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-24 15:06:11,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-24 15:06:11,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-24 15:06:11,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-24 15:06:11,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-24 15:06:11,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-24 15:06:11,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-24 15:06:11,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-24 15:06:11,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-24 15:06:11,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-24 15:06:11,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-24 15:06:11,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-24 15:06:11,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-24 15:06:11,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-24 15:06:11,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-24 15:06:11,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-24 15:06:11,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-24 15:06:11,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-24 15:06:11,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-24 15:06:11,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-24 15:06:11,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-24 15:06:11,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-24 15:06:11,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-24 15:06:11,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-24 15:06:11,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-24 15:06:11,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-24 15:06:12,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-24 15:06:12,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-24 15:06:12,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-24 15:06:12,058 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-24 15:06:12,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-24 15:06:12,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-24 15:06:12,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-24 15:06:12,062 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-24 15:06:12,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-24 15:06:12,063 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-24 15:06:12,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-24 15:06:12,063 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-24 15:06:12,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-24 15:06:12,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-24 15:06:12,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-24 15:06:12,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-24 15:06:12,065 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-24 15:06:12,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-24 15:06:12,065 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-24 15:06:12,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-24 15:06:12,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-24 15:06:12,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-24 15:06:12,066 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-24 15:06:12,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-24 15:06:12,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-24 15:06:12,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-24 15:06:12,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-24 15:06:12,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-24 15:06:12,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-24 15:06:12,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-24 15:06:12,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-24 15:06:12,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-24 15:06:12,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dca3295f12b1ef36cf31c463cf879069525072f
[2020-10-24 15:06:12,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-24 15:06:12,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-24 15:06:12,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-24 15:06:12,495 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-24 15:06:12,496 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-24 15:06:12,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c
[2020-10-24 15:06:12,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/519110072/2168e776eae346d8bdca435fd6df76d6/FLAG0791b9465
[2020-10-24 15:06:13,256 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-24 15:06:13,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c
[2020-10-24 15:06:13,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/519110072/2168e776eae346d8bdca435fd6df76d6/FLAG0791b9465
[2020-10-24 15:06:13,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/519110072/2168e776eae346d8bdca435fd6df76d6
[2020-10-24 15:06:13,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-24 15:06:13,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2020-10-24 15:06:13,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-24 15:06:13,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-24 15:06:13,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-24 15:06:13,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:13,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68fda51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13, skipping insertion in model container
[2020-10-24 15:06:13,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:13,678 INFO L146 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-24 15:06:13,711 INFO L179 MainTranslator]: Built tables and reachable declarations
[2020-10-24 15:06:13,893 INFO L211 PostProcessor]: Analyzing one entry point: main
[2020-10-24 15:06:13,909 INFO L212 MainTranslator]: Completed pre-run
[2020-10-24 15:06:13,937 INFO L211 PostProcessor]: Analyzing one entry point: main
[2020-10-24 15:06:13,956 INFO L217 MainTranslator]: Completed translation
[2020-10-24 15:06:13,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13 WrapperNode
[2020-10-24 15:06:13,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-24 15:06:13,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-10-24 15:06:13,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-10-24 15:06:13,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2020-10-24 15:06:13,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:13,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:14,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-10-24 15:06:14,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-24 15:06:14,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-24 15:06:14,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-24 15:06:14,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:14,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:14,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:14,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:14,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:14,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:14,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
[2020-10-24 15:06:14,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-24 15:06:14,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-24 15:06:14,071 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-24 15:06:14,071 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-24 15:06:14,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-10-24 15:06:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-24 15:06:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-24 15:06:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-10-24 15:06:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-24 15:06:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-24 15:06:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-24 15:06:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-24 15:06:14,639 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-24 15:06:14,639 INFO L298 CfgBuilder]: Removed 18 assume(true) statements.
[2020-10-24 15:06:14,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:14 BoogieIcfgContainer
[2020-10-24 15:06:14,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-24 15:06:14,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-24 15:06:14,643 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-24 15:06:14,647 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-24 15:06:14,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:06:13" (1/3) ...
[2020-10-24 15:06:14,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cd878e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:14, skipping insertion in model container
[2020-10-24 15:06:14,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:13" (2/3) ...
[2020-10-24 15:06:14,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cd878e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:14, skipping insertion in model container
[2020-10-24 15:06:14,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:14" (3/3) ...
[2020-10-24 15:06:14,650 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c
[2020-10-24 15:06:14,671 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-24 15:06:14,676 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-24 15:06:14,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-24 15:06:14,721 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-24 15:06:14,722 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-24 15:06:14,722 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-24 15:06:14,722 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-24 15:06:14,722 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-24 15:06:14,722 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-24 15:06:14,722 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-24 15:06:14,722 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-24 15:06:14,738 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states.
[2020-10-24 15:06:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-24 15:06:14,745 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 15:06:14,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 15:06:14,747 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 15:06:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 15:06:14,755 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times
[2020-10-24 15:06:14,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-24 15:06:14,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904842657]
[2020-10-24 15:06:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 15:06:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 15:06:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 15:06:14,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904842657]
[2020-10-24 15:06:14,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-24 15:06:14,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-10-24 15:06:14,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084799334]
[2020-10-24 15:06:14,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-10-24 15:06:14,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-24 15:06:14,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-10-24 15:06:14,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-10-24 15:06:14,967 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states.
[2020-10-24 15:06:14,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 15:06:14,993 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions.
[2020-10-24 15:06:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-10-24 15:06:14,995 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11
[2020-10-24 15:06:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 15:06:15,023 INFO L225 Difference]: With dead ends: 57
[2020-10-24 15:06:15,025 INFO L226 Difference]: Without dead ends: 26
[2020-10-24 15:06:15,032 INFO L677 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
[2020-10-24 15:06:15,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2020-10-24 15:06:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2020-10-24 15:06:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2020-10-24 15:06:15,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions.
[2020-10-24 15:06:15,088 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11
[2020-10-24 15:06:15,089 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 15:06:15,089 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions.
[2020-10-24 15:06:15,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-10-24 15:06:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions.
[2020-10-24 15:06:15,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-24 15:06:15,091 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 15:06:15,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 15:06:15,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-24 15:06:15,093 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 15:06:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 15:06:15,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times
[2020-10-24 15:06:15,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-24 15:06:15,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220689884]
[2020-10-24 15:06:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 15:06:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 15:06:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 15:06:15,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220689884]
[2020-10-24 15:06:15,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-24 15:06:15,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-24 15:06:15,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439866554]
[2020-10-24 15:06:15,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-24 15:06:15,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-24 15:06:15,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-24 15:06:15,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-24 15:06:15,241 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states.
[2020-10-24 15:06:15,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 15:06:15,335 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions.
[2020-10-24 15:06:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-10-24 15:06:15,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12
[2020-10-24 15:06:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 15:06:15,338 INFO L225 Difference]: With dead ends: 40
[2020-10-24 15:06:15,338 INFO L226 Difference]: Without dead ends: 36
[2020-10-24 15:06:15,339 INFO L677 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
[2020-10-24 15:06:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2020-10-24 15:06:15,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28.
[2020-10-24 15:06:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-10-24 15:06:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions.
[2020-10-24 15:06:15,347 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12
[2020-10-24 15:06:15,347 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 15:06:15,348 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions.
[2020-10-24 15:06:15,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-24 15:06:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions.
[2020-10-24 15:06:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-24 15:06:15,349 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 15:06:15,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 15:06:15,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-24 15:06:15,350 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 15:06:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 15:06:15,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1913129681, now seen corresponding path program 1 times
[2020-10-24 15:06:15,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-24 15:06:15,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269565092]
[2020-10-24 15:06:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 15:06:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 15:06:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 15:06:15,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269565092]
[2020-10-24 15:06:15,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-24 15:06:15,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-24 15:06:15,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563135418]
[2020-10-24 15:06:15,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-24 15:06:15,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-24 15:06:15,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-24 15:06:15,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-24 15:06:15,421 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states.
[2020-10-24 15:06:15,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 15:06:15,503 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions.
[2020-10-24 15:06:15,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-10-24 15:06:15,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13
[2020-10-24 15:06:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 15:06:15,505 INFO L225 Difference]: With dead ends: 42
[2020-10-24 15:06:15,506 INFO L226 Difference]: Without dead ends: 38
[2020-10-24 15:06:15,506 INFO L677 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
[2020-10-24 15:06:15,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2020-10-24 15:06:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28.
[2020-10-24 15:06:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-10-24 15:06:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions.
[2020-10-24 15:06:15,513 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 13
[2020-10-24 15:06:15,514 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 15:06:15,514 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions.
[2020-10-24 15:06:15,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-24 15:06:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions.
[2020-10-24 15:06:15,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-24 15:06:15,516 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 15:06:15,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 15:06:15,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-24 15:06:15,517 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 15:06:15,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 15:06:15,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1959363189, now seen corresponding path program 1 times
[2020-10-24 15:06:15,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-24 15:06:15,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158138822]
[2020-10-24 15:06:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 15:06:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 15:06:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 15:06:15,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158138822]
[2020-10-24 15:06:15,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-24 15:06:15,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-24 15:06:15,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874013870]
[2020-10-24 15:06:15,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-24 15:06:15,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-24 15:06:15,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-24 15:06:15,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-24 15:06:15,613 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states.
[2020-10-24 15:06:15,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 15:06:15,708 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions.
[2020-10-24 15:06:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-10-24 15:06:15,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14
[2020-10-24 15:06:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 15:06:15,711 INFO L225 Difference]: With dead ends: 44
[2020-10-24 15:06:15,711 INFO L226 Difference]: Without dead ends: 40
[2020-10-24 15:06:15,712 INFO L677 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
[2020-10-24 15:06:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2020-10-24 15:06:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28.
[2020-10-24 15:06:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-10-24 15:06:15,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions.
[2020-10-24 15:06:15,720 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 14
[2020-10-24 15:06:15,720 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 15:06:15,720 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions.
[2020-10-24 15:06:15,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-24 15:06:15,720 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions.
[2020-10-24 15:06:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-24 15:06:15,722 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 15:06:15,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 15:06:15,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-24 15:06:15,723 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 15:06:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 15:06:15,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times
[2020-10-24 15:06:15,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-24 15:06:15,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803387402]
[2020-10-24 15:06:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 15:06:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 15:06:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 15:06:15,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803387402]
[2020-10-24 15:06:15,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-24 15:06:15,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-24 15:06:15,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106386763]
[2020-10-24 15:06:15,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-24 15:06:15,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-24 15:06:15,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-24 15:06:15,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-24 15:06:15,865 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states.
[2020-10-24 15:06:15,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 15:06:15,986 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions.
[2020-10-24 15:06:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-10-24 15:06:15,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15
[2020-10-24 15:06:15,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 15:06:15,989 INFO L225 Difference]: With dead ends: 42
[2020-10-24 15:06:15,989 INFO L226 Difference]: Without dead ends: 38
[2020-10-24 15:06:15,989 INFO L677 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
[2020-10-24 15:06:15,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2020-10-24 15:06:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28.
[2020-10-24 15:06:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-10-24 15:06:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions.
[2020-10-24 15:06:15,996 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15
[2020-10-24 15:06:15,996 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 15:06:15,997 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions.
[2020-10-24 15:06:15,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-24 15:06:15,997 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions.
[2020-10-24 15:06:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-24 15:06:15,998 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 15:06:15,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 15:06:15,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-24 15:06:15,999 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 15:06:15,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 15:06:16,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times
[2020-10-24 15:06:16,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-24 15:06:16,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000011474]
[2020-10-24 15:06:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 15:06:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-24 15:06:16,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-24 15:06:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-24 15:06:16,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-24 15:06:16,098 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-10-24 15:06:16,098 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-24 15:06:16,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-24 15:06:16,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:06:16 BoogieIcfgContainer
[2020-10-24 15:06:16,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-24 15:06:16,135 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2020-10-24 15:06:16,135 INFO L271 PluginConnector]: Initializing Witness Printer...
[2020-10-24 15:06:16,135 INFO L275 PluginConnector]: Witness Printer initialized
[2020-10-24 15:06:16,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:14" (3/4) ...
[2020-10-24 15:06:16,139 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2020-10-24 15:06:16,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2020-10-24 15:06:16,143 INFO L168 Benchmark]: Toolchain (without parser) took 2540.84 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 22.1 MB in the beginning and 39.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:16,143 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 44.0 MB. Free memory is still 26.5 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2020-10-24 15:06:16,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.62 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.4 MB in the beginning and 31.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:16,145 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.42 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 29.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:16,146 INFO L168 Benchmark]: Boogie Preprocessor took 59.34 ms. Allocated memory is still 54.5 MB. Free memory was 29.1 MB in the beginning and 27.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:16,147 INFO L168 Benchmark]: RCFGBuilder took 572.72 ms. Allocated memory is still 54.5 MB. Free memory was 27.6 MB in the beginning and 23.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:16,148 INFO L168 Benchmark]: TraceAbstraction took 1491.01 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 23.3 MB in the beginning and 39.5 MB in the end (delta: -16.2 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2020-10-24 15:06:16,149 INFO L168 Benchmark]: Witness Printer took 5.13 ms. Allocated memory is still 67.1 MB. Free memory was 39.5 MB in the beginning and 39.1 MB in the end (delta: 431.5 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2020-10-24 15:06:16,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.89 ms. Allocated memory is still 44.0 MB. Free memory is still 26.5 MB. There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 343.62 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.4 MB in the beginning and 31.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB.
* Boogie Procedure Inliner took 49.42 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 29.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* Boogie Preprocessor took 59.34 ms. Allocated memory is still 54.5 MB. Free memory was 29.1 MB in the beginning and 27.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* RCFGBuilder took 572.72 ms. Allocated memory is still 54.5 MB. Free memory was 27.6 MB in the beginning and 23.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 1491.01 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 23.3 MB in the beginning and 39.5 MB in the end (delta: -16.2 MB). There was no memory consumed. Max. memory is 16.1 GB.
* Witness Printer took 5.13 ms. Allocated memory is still 67.1 MB. Free memory was 39.5 MB in the beginning and 39.1 MB in the end (delta: 431.5 kB). There was no memory consumed. Max. memory is 16.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 67, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 79.
Possible FailurePath:
[L66] double x = __VERIFIER_nondet_double();
[L67] double y = 0.0 / 0.0;
[L18] return x != x;
[L74] COND TRUE !isnan_double(x)
[L29] __uint32_t msw, lsw;
[L32] ieee_double_shape_type ew_u;
[L33] ew_u.value = (x)
[L34] EXPR ew_u.parts.msw
[L34] (msw) = ew_u.parts.msw
[L35] EXPR ew_u.parts.lsw
[L35] (lsw) = ew_u.parts.lsw
[L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) ||
(msw == 0x80000000 && lsw == 0x00000000))
[L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) ||
(msw >= 0x80100000 && msw <= 0xffefffff))
[L44-L45] COND FALSE !(( msw <= 0x000fffff) ||
(msw >= 0x80000000 && msw <= 0x800fffff))
[L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) ||
(msw == 0xfff00000 && lsw == 0x00000000))
[L52] return 0;
[L57] COND TRUE __fpclassify_double(x) == 0
[L58] return y;
[L76] double res = fmax_double(x, y);
[L79] COND TRUE res != x
[L3] __assert_fail("0", "double_req_bl_1251b.c", 3, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 40 SDslu, 242 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...
### Bit-precise run ###
This is Ultimate 0.2.0-ee8e70e
[2020-10-24 15:06:18,804 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-24 15:06:18,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-24 15:06:18,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-24 15:06:18,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-24 15:06:18,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-24 15:06:18,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-24 15:06:18,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-24 15:06:18,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-24 15:06:18,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-24 15:06:18,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-10-24 15:06:18,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-24 15:06:18,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-24 15:06:18,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-24 15:06:18,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-24 15:06:18,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-24 15:06:18,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-24 15:06:18,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-24 15:06:18,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-24 15:06:18,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-24 15:06:18,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-24 15:06:18,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-24 15:06:18,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-24 15:06:18,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-24 15:06:18,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-24 15:06:18,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-24 15:06:18,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-24 15:06:18,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-24 15:06:18,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-24 15:06:18,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-24 15:06:18,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-24 15:06:18,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-24 15:06:18,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-24 15:06:18,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-24 15:06:18,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-24 15:06:18,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-24 15:06:18,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-24 15:06:18,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-24 15:06:18,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-24 15:06:18,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-24 15:06:18,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-24 15:06:18,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2020-10-24 15:06:19,030 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-24 15:06:19,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-24 15:06:19,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-24 15:06:19,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-24 15:06:19,035 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-24 15:06:19,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-24 15:06:19,035 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-24 15:06:19,035 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-24 15:06:19,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-24 15:06:19,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-24 15:06:19,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-24 15:06:19,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-24 15:06:19,038 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2020-10-24 15:06:19,038 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2020-10-24 15:06:19,038 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-24 15:06:19,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-24 15:06:19,039 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-24 15:06:19,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-24 15:06:19,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-24 15:06:19,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-24 15:06:19,040 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-24 15:06:19,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-24 15:06:19,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-24 15:06:19,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-24 15:06:19,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-24 15:06:19,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-24 15:06:19,042 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2020-10-24 15:06:19,042 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt
[2020-10-24 15:06:19,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-24 15:06:19,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-24 15:06:19,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2020-10-24 15:06:19,043 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dca3295f12b1ef36cf31c463cf879069525072f
[2020-10-24 15:06:19,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-24 15:06:19,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-24 15:06:19,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-24 15:06:19,540 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-24 15:06:19,541 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-24 15:06:19,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c
[2020-10-24 15:06:19,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16137d2c3/2d1d87171d9249c788d187ab186da45f/FLAG60342c02b
[2020-10-24 15:06:20,245 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-24 15:06:20,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c
[2020-10-24 15:06:20,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16137d2c3/2d1d87171d9249c788d187ab186da45f/FLAG60342c02b
[2020-10-24 15:06:20,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16137d2c3/2d1d87171d9249c788d187ab186da45f
[2020-10-24 15:06:20,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-24 15:06:20,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2020-10-24 15:06:20,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-24 15:06:20,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-24 15:06:20,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-24 15:06:20,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:20,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec4af73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20, skipping insertion in model container
[2020-10-24 15:06:20,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:20,642 INFO L146 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-24 15:06:20,665 INFO L179 MainTranslator]: Built tables and reachable declarations
[2020-10-24 15:06:20,881 INFO L211 PostProcessor]: Analyzing one entry point: main
[2020-10-24 15:06:20,898 INFO L212 MainTranslator]: Completed pre-run
[2020-10-24 15:06:20,925 INFO L211 PostProcessor]: Analyzing one entry point: main
[2020-10-24 15:06:20,950 INFO L217 MainTranslator]: Completed translation
[2020-10-24 15:06:20,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20 WrapperNode
[2020-10-24 15:06:20,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-24 15:06:20,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-10-24 15:06:20,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-10-24 15:06:20,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2020-10-24 15:06:20,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:20,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:21,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-10-24 15:06:21,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-24 15:06:21,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-24 15:06:21,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-24 15:06:21,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:21,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:21,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:21,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:21,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:21,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:21,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
[2020-10-24 15:06:21,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-24 15:06:21,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-24 15:06:21,061 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-24 15:06:21,061 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-24 15:06:21,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-10-24 15:06:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE
[2020-10-24 15:06:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8
[2020-10-24 15:06:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2020-10-24 15:06:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-24 15:06:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2020-10-24 15:06:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-24 15:06:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-24 15:06:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-24 15:06:21,950 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-24 15:06:21,950 INFO L298 CfgBuilder]: Removed 18 assume(true) statements.
[2020-10-24 15:06:21,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:21 BoogieIcfgContainer
[2020-10-24 15:06:21,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-24 15:06:21,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-24 15:06:21,954 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-24 15:06:21,958 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-24 15:06:21,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:06:20" (1/3) ...
[2020-10-24 15:06:21,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4300735f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:21, skipping insertion in model container
[2020-10-24 15:06:21,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (2/3) ...
[2020-10-24 15:06:21,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4300735f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:21, skipping insertion in model container
[2020-10-24 15:06:21,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:21" (3/3) ...
[2020-10-24 15:06:21,961 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c
[2020-10-24 15:06:21,973 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-24 15:06:21,978 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-24 15:06:21,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-24 15:06:22,016 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-24 15:06:22,016 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-24 15:06:22,016 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-24 15:06:22,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-24 15:06:22,016 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-24 15:06:22,017 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-24 15:06:22,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-24 15:06:22,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-24 15:06:22,032 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states.
[2020-10-24 15:06:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-24 15:06:22,038 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 15:06:22,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 15:06:22,040 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 15:06:22,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 15:06:22,046 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times
[2020-10-24 15:06:22,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF
[2020-10-24 15:06:22,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087633352]
[2020-10-24 15:06:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/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
[2020-10-24 15:06:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 15:06:23,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-10-24 15:06:23,161 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-24 15:06:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 15:06:23,180 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-10-24 15:06:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 15:06:23,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087633352]
[2020-10-24 15:06:23,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2020-10-24 15:06:23,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2020-10-24 15:06:23,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602209200]
[2020-10-24 15:06:23,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-10-24 15:06:23,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2020-10-24 15:06:23,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-10-24 15:06:23,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-10-24 15:06:23,210 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states.
[2020-10-24 15:06:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 15:06:23,232 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions.
[2020-10-24 15:06:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-10-24 15:06:23,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11
[2020-10-24 15:06:23,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 15:06:23,245 INFO L225 Difference]: With dead ends: 57
[2020-10-24 15:06:23,245 INFO L226 Difference]: Without dead ends: 26
[2020-10-24 15:06:23,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-10-24 15:06:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2020-10-24 15:06:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2020-10-24 15:06:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2020-10-24 15:06:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions.
[2020-10-24 15:06:23,302 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11
[2020-10-24 15:06:23,303 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 15:06:23,303 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions.
[2020-10-24 15:06:23,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-10-24 15:06:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions.
[2020-10-24 15:06:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-24 15:06:23,305 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 15:06:23,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 15:06:23,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3
[2020-10-24 15:06:23,521 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 15:06:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 15:06:23,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times
[2020-10-24 15:06:23,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF
[2020-10-24 15:06:23,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435931610]
[2020-10-24 15:06:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/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
[2020-10-24 15:06:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 15:06:24,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-10-24 15:06:24,502 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-24 15:06:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 15:06:24,544 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-10-24 15:06:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 15:06:24,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435931610]
[2020-10-24 15:06:24,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2020-10-24 15:06:24,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2020-10-24 15:06:24,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110183550]
[2020-10-24 15:06:24,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-24 15:06:24,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2020-10-24 15:06:24,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-24 15:06:24,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-24 15:06:24,583 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states.
[2020-10-24 15:06:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 15:06:24,728 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions.
[2020-10-24 15:06:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-10-24 15:06:24,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12
[2020-10-24 15:06:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 15:06:24,732 INFO L225 Difference]: With dead ends: 50
[2020-10-24 15:06:24,732 INFO L226 Difference]: Without dead ends: 46
[2020-10-24 15:06:24,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2020-10-24 15:06:24,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2020-10-24 15:06:24,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28.
[2020-10-24 15:06:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-10-24 15:06:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions.
[2020-10-24 15:06:24,751 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12
[2020-10-24 15:06:24,752 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 15:06:24,752 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions.
[2020-10-24 15:06:24,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-24 15:06:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions.
[2020-10-24 15:06:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-24 15:06:24,756 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 15:06:24,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 15:06:24,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3
[2020-10-24 15:06:24,973 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 15:06:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 15:06:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times
[2020-10-24 15:06:24,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF
[2020-10-24 15:06:24,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502411928]
[2020-10-24 15:06:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/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
[2020-10-24 15:06:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-24 15:06:26,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-24 15:06:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-24 15:06:27,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-24 15:06:27,310 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2020-10-24 15:06:27,310 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-24 15:06:27,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3
[2020-10-24 15:06:27,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:06:27 BoogieIcfgContainer
[2020-10-24 15:06:27,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-24 15:06:27,587 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2020-10-24 15:06:27,589 INFO L271 PluginConnector]: Initializing Witness Printer...
[2020-10-24 15:06:27,590 INFO L275 PluginConnector]: Witness Printer initialized
[2020-10-24 15:06:27,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:21" (3/4) ...
[2020-10-24 15:06:27,595 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2020-10-24 15:06:27,661 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml
[2020-10-24 15:06:27,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2020-10-24 15:06:27,665 INFO L168 Benchmark]: Toolchain (without parser) took 7052.60 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 24.1 MB in the beginning and 30.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:27,666 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 46.1 MB. Free memory was 26.7 MB in the beginning and 26.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2020-10-24 15:06:27,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.05 ms. Allocated memory is still 46.1 MB. Free memory was 23.5 MB in the beginning and 23.6 MB in the end (delta: -88.4 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:27,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.48 ms. Allocated memory is still 46.1 MB. Free memory was 23.5 MB in the beginning and 21.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:27,669 INFO L168 Benchmark]: Boogie Preprocessor took 52.84 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 21.7 MB in the beginning and 43.8 MB in the end (delta: -22.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:27,670 INFO L168 Benchmark]: RCFGBuilder took 891.65 ms. Allocated memory is still 58.7 MB. Free memory was 43.8 MB in the beginning and 37.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:27,670 INFO L168 Benchmark]: TraceAbstraction took 5631.79 ms. Allocated memory is still 58.7 MB. Free memory was 37.2 MB in the beginning and 33.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:27,671 INFO L168 Benchmark]: Witness Printer took 75.44 ms. Allocated memory is still 58.7 MB. Free memory was 33.3 MB in the beginning and 30.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2020-10-24 15:06:27,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.30 ms. Allocated memory is still 46.1 MB. Free memory was 26.7 MB in the beginning and 26.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 333.05 ms. Allocated memory is still 46.1 MB. Free memory was 23.5 MB in the beginning and 23.6 MB in the end (delta: -88.4 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB.
* Boogie Procedure Inliner took 53.48 ms. Allocated memory is still 46.1 MB. Free memory was 23.5 MB in the beginning and 21.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* Boogie Preprocessor took 52.84 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 21.7 MB in the beginning and 43.8 MB in the end (delta: -22.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB.
* RCFGBuilder took 891.65 ms. Allocated memory is still 58.7 MB. Free memory was 43.8 MB in the beginning and 37.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 5631.79 ms. Allocated memory is still 58.7 MB. Free memory was 37.2 MB in the beginning and 33.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB.
* Witness Printer took 75.44 ms. Allocated memory is still 58.7 MB. Free memory was 33.3 MB in the beginning and 30.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L66] double x = __VERIFIER_nondet_double();
[L67] EXPR 0.0
[L67] EXPR 0.0
[L67] EXPR 0.0 / 0.0
[L67] double y = 0.0 / 0.0;
[L18] return x != x;
[L74] COND TRUE !isnan_double(x)
[L29] __uint32_t msw, lsw;
[L32] ieee_double_shape_type ew_u;
[L33] ew_u.value = (x)
[L34] EXPR ew_u.parts.msw
[L34] (msw) = ew_u.parts.msw
[L35] EXPR ew_u.parts.lsw
[L35] (lsw) = ew_u.parts.lsw
[L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) ||
(msw == 0x80000000 && lsw == 0x00000000))
[L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) ||
(msw >= 0x80100000 && msw <= 0xffefffff))
[L44-L45] COND FALSE !(( msw <= 0x000fffff) ||
(msw >= 0x80000000 && msw <= 0x800fffff))
[L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) ||
(msw == 0xfff00000 && lsw == 0x00000000))
[L52] return 0;
[L57] COND TRUE __fpclassify_double(x) == 0
[L58] return y;
[L76] double res = fmax_double(x, y);
[L79] COND TRUE res != x
[L3] __assert_fail("0", "double_req_bl_1251b.c", 3, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 30 SDslu, 98 SDs, 0 SdLazy, 27 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 1 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...