/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 10:40:14,784 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 10:40:14,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 10:40:14,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 10:40:14,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 10:40:14,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 10:40:14,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 10:40:14,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 10:40:14,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 10:40:14,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 10:40:14,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 10:40:14,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 10:40:14,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 10:40:14,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 10:40:14,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 10:40:14,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 10:40:14,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 10:40:14,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 10:40:14,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 10:40:14,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 10:40:14,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 10:40:14,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 10:40:14,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 10:40:14,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 10:40:14,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 10:40:14,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 10:40:14,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 10:40:14,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 10:40:14,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 10:40:14,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 10:40:14,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-07-21 10:40:14,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-07-21 10:40:14,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 10:40:14,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 10:40:14,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-07-21 10:40:14,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 10:40:14,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 10:40:14,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 10:40:14,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-21 10:40:14,903 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 10:40:14,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 10:40:14,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 10:40:14,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 10:40:14,906 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 10:40:14,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 10:40:14,906 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 10:40:14,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 10:40:14,906 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 10:40:14,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 10:40:14,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 10:40:14,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 10:40:14,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 10:40:14,909 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 10:40:14,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 10:40:14,909 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 10:40:14,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 10:40:14,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 10:40:14,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 10:40:14,911 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 10:40:14,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 10:40:14,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 10:40:14,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 10:40:14,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 10:40:14,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 10:40:14,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 10:40:14,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:40:14,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 10:40:14,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 10:40:14,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY
[2020-07-21 10:40:15,194 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 10:40:15,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 10:40:15,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 10:40:15,213 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 10:40:15,213 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 10:40:15,214 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c
[2020-07-21 10:40:15,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5c27029/faac3bb09a79454699df76223df30b7e/FLAG14861b7e3
[2020-07-21 10:40:15,764 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 10:40:15,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c
[2020-07-21 10:40:15,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5c27029/faac3bb09a79454699df76223df30b7e/FLAG14861b7e3
[2020-07-21 10:40:16,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5c27029/faac3bb09a79454699df76223df30b7e
[2020-07-21 10:40:16,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 10:40:16,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 10:40:16,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 10:40:16,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 10:40:16,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 10:40:16,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:16" (1/1) ...
[2020-07-21 10:40:16,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9bc63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16, skipping insertion in model container
[2020-07-21 10:40:16,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:16" (1/1) ...
[2020-07-21 10:40:16,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 10:40:16,199 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 10:40:16,374 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:40:16,377 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 10:40:16,405 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:40:16,514 INFO L208 MainTranslator]: Completed translation
[2020-07-21 10:40:16,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16 WrapperNode
[2020-07-21 10:40:16,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 10:40:16,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 10:40:16,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 10:40:16,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 10:40:16,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ...
[2020-07-21 10:40:16,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ...
[2020-07-21 10:40:16,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ...
[2020-07-21 10:40:16,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ...
[2020-07-21 10:40:16,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ...
[2020-07-21 10:40:16,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ...
[2020-07-21 10:40:16,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ...
[2020-07-21 10:40:16,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 10:40:16,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 10:40:16,579 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 10:40:16,579 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 10:40:16,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 10:40:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 10:40:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 10:40:16,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float
[2020-07-21 10:40:16,647 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float
[2020-07-21 10:40:16,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float
[2020-07-21 10:40:16,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 10:40:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 10:40:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float
[2020-07-21 10:40:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-21 10:40:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-07-21 10:40:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 10:40:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 10:40:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float
[2020-07-21 10:40:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float
[2020-07-21 10:40:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 10:40:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 10:40:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 10:40:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-07-21 10:40:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 10:40:16,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 10:40:16,984 INFO L295 CfgBuilder]: Removed 4 assume(true) statements.
[2020-07-21 10:40:16,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:16 BoogieIcfgContainer
[2020-07-21 10:40:16,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 10:40:16,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 10:40:16,990 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 10:40:16,993 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 10:40:16,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:40:16" (1/3) ...
[2020-07-21 10:40:16,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cec2232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:16, skipping insertion in model container
[2020-07-21 10:40:16,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (2/3) ...
[2020-07-21 10:40:16,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cec2232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:16, skipping insertion in model container
[2020-07-21 10:40:16,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:16" (3/3) ...
[2020-07-21 10:40:16,997 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c
[2020-07-21 10:40:17,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 10:40:17,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 10:40:17,027 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 10:40:17,046 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 10:40:17,046 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 10:40:17,047 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 10:40:17,047 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 10:40:17,047 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 10:40:17,047 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 10:40:17,047 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 10:40:17,047 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 10:40:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states.
[2020-07-21 10:40:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-07-21 10:40:17,070 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:40:17,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:40:17,071 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:40:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:40:17,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1078913502, now seen corresponding path program 1 times
[2020-07-21 10:40:17,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:40:17,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585996571]
[2020-07-21 10:40:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:40:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:40:17,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 10:40:17,196 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:40:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:40:17,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:40:17,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585996571]
[2020-07-21 10:40:17,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:40:17,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 10:40:17,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551373967]
[2020-07-21 10:40:17,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 10:40:17,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:40:17,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 10:40:17,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 10:40:17,248 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states.
[2020-07-21 10:40:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:40:17,276 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions.
[2020-07-21 10:40:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-21 10:40:17,277 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22
[2020-07-21 10:40:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:40:17,286 INFO L225 Difference]: With dead ends: 79
[2020-07-21 10:40:17,287 INFO L226 Difference]: Without dead ends: 40
[2020-07-21 10:40:17,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 10:40:17,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2020-07-21 10:40:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2020-07-21 10:40:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2020-07-21 10:40:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions.
[2020-07-21 10:40:17,336 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22
[2020-07-21 10:40:17,337 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:40:17,337 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions.
[2020-07-21 10:40:17,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 10:40:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions.
[2020-07-21 10:40:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-07-21 10:40:17,340 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:40:17,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:40:17,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:40:17,556 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:40:17,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:40:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269066, now seen corresponding path program 1 times
[2020-07-21 10:40:17,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:40:17,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669142898]
[2020-07-21 10:40:17,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:40:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:40:17,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-21 10:40:17,636 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:40:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:40:17,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:40:17,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669142898]
[2020-07-21 10:40:17,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:40:17,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 10:40:17,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523641340]
[2020-07-21 10:40:17,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 10:40:17,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:40:17,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 10:40:17,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 10:40:17,680 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states.
[2020-07-21 10:40:17,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:40:17,713 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions.
[2020-07-21 10:40:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-07-21 10:40:17,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23
[2020-07-21 10:40:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:40:17,717 INFO L225 Difference]: With dead ends: 59
[2020-07-21 10:40:17,717 INFO L226 Difference]: Without dead ends: 44
[2020-07-21 10:40:17,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 10:40:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2020-07-21 10:40:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2020-07-21 10:40:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-07-21 10:40:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions.
[2020-07-21 10:40:17,730 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23
[2020-07-21 10:40:17,730 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:40:17,730 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions.
[2020-07-21 10:40:17,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 10:40:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions.
[2020-07-21 10:40:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-07-21 10:40:17,732 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:40:17,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:40:17,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:40:17,947 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:40:17,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:40:17,949 INFO L82 PathProgramCache]: Analyzing trace with hash 888409989, now seen corresponding path program 1 times
[2020-07-21 10:40:17,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:40:17,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014637671]
[2020-07-21 10:40:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:40:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:40:18,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-21 10:40:18,003 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:40:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:40:18,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:40:18,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014637671]
[2020-07-21 10:40:18,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:40:18,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 10:40:18,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469874211]
[2020-07-21 10:40:18,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 10:40:18,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:40:18,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 10:40:18,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 10:40:18,040 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states.
[2020-07-21 10:40:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:40:18,086 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions.
[2020-07-21 10:40:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-07-21 10:40:18,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26
[2020-07-21 10:40:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:40:18,090 INFO L225 Difference]: With dead ends: 63
[2020-07-21 10:40:18,091 INFO L226 Difference]: Without dead ends: 48
[2020-07-21 10:40:18,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 10:40:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2020-07-21 10:40:18,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44.
[2020-07-21 10:40:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-07-21 10:40:18,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions.
[2020-07-21 10:40:18,112 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26
[2020-07-21 10:40:18,113 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:40:18,113 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions.
[2020-07-21 10:40:18,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 10:40:18,114 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions.
[2020-07-21 10:40:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-07-21 10:40:18,116 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:40:18,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:40:18,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:40:18,332 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:40:18,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:40:18,333 INFO L82 PathProgramCache]: Analyzing trace with hash -908541370, now seen corresponding path program 1 times
[2020-07-21 10:40:18,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:40:18,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786035414]
[2020-07-21 10:40:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:40:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:40:18,393 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:40:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:40:18,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:40:18,481 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 10:40:18,481 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 10:40:18,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:40:18,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:40:18 BoogieIcfgContainer
[2020-07-21 10:40:18,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 10:40:18,726 INFO L168 Benchmark]: Toolchain (without parser) took 2568.86 ms. Allocated memory was 145.2 MB in the beginning and 236.5 MB in the end (delta: 91.2 MB). Free memory was 102.8 MB in the beginning and 203.6 MB in the end (delta: -100.8 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB.
[2020-07-21 10:40:18,727 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
[2020-07-21 10:40:18,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.61 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 102.4 MB in the beginning and 182.5 MB in the end (delta: -80.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB.
[2020-07-21 10:40:18,728 INFO L168 Benchmark]: Boogie Preprocessor took 62.69 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB.
[2020-07-21 10:40:18,729 INFO L168 Benchmark]: RCFGBuilder took 410.19 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 160.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB.
[2020-07-21 10:40:18,730 INFO L168 Benchmark]: TraceAbstraction took 1733.91 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 159.5 MB in the beginning and 203.6 MB in the end (delta: -44.1 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB.
[2020-07-21 10:40:18,734 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 352.61 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 102.4 MB in the beginning and 182.5 MB in the end (delta: -80.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 62.69 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 410.19 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 160.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1733.91 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 159.5 MB in the beginning and 203.6 MB in the end (delta: -44.1 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72.
Possible FailurePath:
[L72] float x = -0.0f;
[L73] float y = 0.0f;
VAL [y=0]
[L75] CALL, EXPR fmax_float(x, y)
VAL [\old(x)=4, \old(y)=0]
[L43] CALL, EXPR __fpclassify_float(x)
VAL [\old(x)=4]
[L20] __uint32_t w;
VAL [\old(x)=4, x=4]
[L23] ieee_float_shape_type gf_u;
[L24] gf_u.value = (x)
[L25] EXPR gf_u.word
[L25] (w) = gf_u.word
[L28] COND FALSE !(w == 0x00000000 || w == 0x80000000)
VAL [\old(x)=4, w=2139095041, x=4]
[L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) ||
(w >= 0x80800000 && w <= 0xff7fffff))
VAL [\old(x)=4, w=2139095041, x=4]
[L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) ||
(w >= 0x80000001 && w <= 0x807fffff))
VAL [\old(x)=4, w=2139095041, x=4]
[L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000)
[L39] return 0;
VAL [\old(x)=4, \result=0, w=2139095041, x=4]
[L43] RET, EXPR __fpclassify_float(x)
VAL [\old(x)=4, \old(y)=0, __fpclassify_float(x)=0, x=4, y=0]
[L43] COND TRUE __fpclassify_float(x) == 0
[L44] return y;
VAL [\old(x)=4, \old(y)=0, \result=0, x=4, y=0]
[L75] RET, EXPR fmax_float(x, y)
VAL [fmax_float(x, y)=0, x=4, y=0]
[L75] float res = fmax_float(x, y);
[L78] EXPR res == 0.0f && __signbit_float(res) == 0
VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4, y=0]
[L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0)
[L79] __VERIFIER_error()
VAL [res=0, x=4, y=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 271 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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...