/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-c90d42b
[2020-09-24 15:55:09,790 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 15:55:09,794 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 15:55:09,832 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 15:55:09,832 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 15:55:09,840 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 15:55:09,842 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 15:55:09,844 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 15:55:09,847 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 15:55:09,848 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 15:55:09,852 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 15:55:09,852 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 15:55:09,856 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 15:55:09,859 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 15:55:09,860 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 15:55:09,862 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 15:55:09,865 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 15:55:09,867 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 15:55:09,873 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 15:55:09,876 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 15:55:09,878 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 15:55:09,879 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 15:55:09,880 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 15:55:09,892 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 15:55:09,893 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 15:55:09,893 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 15:55:09,897 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 15:55:09,897 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 15:55:09,898 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 15:55:09,899 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 15:55:09,899 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 15:55:09,903 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 15:55:09,904 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 15:55:09,905 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 15:55:09,906 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 15:55:09,906 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 15:55:09,907 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 15:55:09,909 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 15:55:09,911 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 15:55:09,916 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 15:55:09,959 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 15:55:09,959 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 15:55:09,961 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 15:55:09,961 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 15:55:09,962 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 15:55:09,962 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 15:55:09,962 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 15:55:09,963 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 15:55:09,963 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 15:55:09,963 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 15:55:09,964 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 15:55:09,964 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 15:55:09,964 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 15:55:09,965 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 15:55:09,965 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 15:55:09,965 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 15:55:09,966 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 15:55:09,966 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 15:55:09,966 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 15:55:09,966 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 15:55:09,967 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 15:55:09,967 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 15:55:09,967 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 15:55:09,967 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 15:55:09,967 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 15:55:09,968 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 15:55:09,968 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 15:55:09,968 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 15:55:09,968 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 15:55:09,968 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 -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
[2020-09-24 15:55:10,420 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 15:55:10,449 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 15:55:10,455 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 15:55:10,457 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 15:55:10,458 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 15:55:10,460 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i
[2020-09-24 15:55:10,554 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99a503259/31a90cc3b98b489cb3f1fdbaedce65fe/FLAGc2c617214
[2020-09-24 15:55:11,110 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 15:55:11,111 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i
[2020-09-24 15:55:11,121 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99a503259/31a90cc3b98b489cb3f1fdbaedce65fe/FLAGc2c617214
[2020-09-24 15:55:11,403 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99a503259/31a90cc3b98b489cb3f1fdbaedce65fe
[2020-09-24 15:55:11,416 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 15:55:11,422 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 15:55:11,423 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 15:55:11,424 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 15:55:11,428 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 15:55:11,429 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:55:11" (1/1) ...
[2020-09-24 15:55:11,433 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11, skipping insertion in model container
[2020-09-24 15:55:11,434 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:55:11" (1/1) ...
[2020-09-24 15:55:11,443 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 15:55:11,473 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 15:55:11,699 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:55:11,703 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 15:55:11,733 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:55:11,762 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 15:55:11,763 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11 WrapperNode
[2020-09-24 15:55:11,763 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 15:55:11,764 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 15:55:11,764 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 15:55:11,764 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 15:55:11,860 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11" (1/1) ...
[2020-09-24 15:55:11,861 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11" (1/1) ...
[2020-09-24 15:55:11,872 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11" (1/1) ...
[2020-09-24 15:55:11,872 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11" (1/1) ...
[2020-09-24 15:55:11,880 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11" (1/1) ...
[2020-09-24 15:55:11,882 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11" (1/1) ...
[2020-09-24 15:55:11,884 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11" (1/1) ...
[2020-09-24 15:55:11,886 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 15:55:11,887 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 15:55:11,887 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 15:55:11,887 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 15:55:11,888 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11" (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
[2020-09-24 15:55:11,971 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 15:55:11,972 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 15:55:11,972 INFO  L138     BoogieDeclarations]: Found implementation of procedure f00
[2020-09-24 15:55:11,972 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 15:55:11,972 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 15:55:11,973 INFO  L130     BoogieDeclarations]: Found specification of procedure f00
[2020-09-24 15:55:11,973 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 15:55:11,973 INFO  L130     BoogieDeclarations]: Found specification of procedure write~real
[2020-09-24 15:55:11,973 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 15:55:11,973 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 15:55:11,974 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 15:55:11,974 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 15:55:11,974 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 15:55:11,974 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 15:55:11,974 INFO  L130     BoogieDeclarations]: Found specification of procedure read~real
[2020-09-24 15:55:12,205 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 15:55:12,205 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 15:55:12,210 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:55:12 BoogieIcfgContainer
[2020-09-24 15:55:12,211 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 15:55:12,212 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 15:55:12,213 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 15:55:12,216 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 15:55:12,217 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:55:11" (1/3) ...
[2020-09-24 15:55:12,218 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@868a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:55:12, skipping insertion in model container
[2020-09-24 15:55:12,218 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:11" (2/3) ...
[2020-09-24 15:55:12,218 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@868a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:55:12, skipping insertion in model container
[2020-09-24 15:55:12,218 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:55:12" (3/3) ...
[2020-09-24 15:55:12,220 INFO  L109   eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i
[2020-09-24 15:55:12,233 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 15:55:12,243 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 15:55:12,271 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 15:55:12,307 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 15:55:12,308 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 15:55:12,308 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 15:55:12,308 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 15:55:12,308 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 15:55:12,308 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 15:55:12,308 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 15:55:12,309 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 15:55:12,336 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states.
[2020-09-24 15:55:12,345 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-09-24 15:55:12,345 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:55:12,347 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:55:12,347 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [f00Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:55:12,355 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:55:12,356 INFO  L82        PathProgramCache]: Analyzing trace with hash -2083809080, now seen corresponding path program 1 times
[2020-09-24 15:55:12,368 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:55:12,368 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544518028]
[2020-09-24 15:55:12,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:55:12,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 15:55:12,543 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 15:55:12,544 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 15:55:12,549 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 15:55:12,568 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:55:12 BoogieIcfgContainer
[2020-09-24 15:55:12,568 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 15:55:12,572 INFO  L168              Benchmark]: Toolchain (without parser) took 1152.74 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 155.2 MB in the end (delta: -52.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB.
[2020-09-24 15:55:12,573 INFO  L168              Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 15:55:12,574 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 340.13 ms. Allocated memory is still 141.0 MB. Free memory was 101.9 MB in the beginning and 91.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
[2020-09-24 15:55:12,575 INFO  L168              Benchmark]: Boogie Preprocessor took 122.51 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 91.5 MB in the beginning and 182.5 MB in the end (delta: -91.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
[2020-09-24 15:55:12,576 INFO  L168              Benchmark]: RCFGBuilder took 324.36 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 167.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB.
[2020-09-24 15:55:12,577 INFO  L168              Benchmark]: TraceAbstraction took 355.86 ms. Allocated memory is still 204.5 MB. Free memory was 167.5 MB in the beginning and 155.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
[2020-09-24 15:55:12,581 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 340.13 ms. Allocated memory is still 141.0 MB. Free memory was 101.9 MB in the beginning and 91.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 122.51 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 91.5 MB in the beginning and 182.5 MB in the end (delta: -91.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 324.36 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 167.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 355.86 ms. Allocated memory is still 204.5 MB. Free memory was 167.5 MB in the beginning and 155.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable
    Unable to prove that call of __VERIFIER_error() unreachable
 Reason: overapproximation of someUnaryDOUBLEoperation at line 111, overapproximation of someBinaryArithmeticFLOAToperation at line 100. 
Possible FailurePath: 
[L111]  CALL       f00(-0x1.6b890ep+29, 0x1.6b890ep+29)
[L100]             float sum = a + b;
[L101]             union mix m;
[L102]             m.f = sum
[L103]  EXPR       m.i
[L103]  COND TRUE  !(m.i != 0x80000000)
[L103]             __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...