/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 20:22:30,712 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 20:22:30,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 20:22:30,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 20:22:30,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 20:22:30,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 20:22:30,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 20:22:30,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 20:22:30,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 20:22:30,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 20:22:30,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 20:22:30,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 20:22:30,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 20:22:30,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 20:22:30,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 20:22:30,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 20:22:30,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 20:22:30,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 20:22:30,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 20:22:30,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 20:22:30,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 20:22:30,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 20:22:30,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 20:22:30,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 20:22:30,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 20:22:30,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 20:22:30,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 20:22:30,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 20:22:30,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 20:22:30,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 20:22:30,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 20:22:30,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 20:22:30,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 20:22:30,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 20:22:30,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 20:22:30,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 20:22:30,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 20:22:30,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 20:22:30,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 20:22:30,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 20:22:30,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 20:22:30,790 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 20:22:30,819 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 20:22:30,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 20:22:30,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 20:22:30,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 20:22:30,821 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 20:22:30,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 20:22:30,822 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 20:22:30,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 20:22:30,822 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 20:22:30,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 20:22:30,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 20:22:30,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 20:22:30,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 20:22:30,823 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 20:22:30,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 20:22:30,823 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 20:22:30,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 20:22:30,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 20:22:30,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 20:22:30,824 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 20:22:30,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 20:22:30,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:22:30,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 20:22:30,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 20:22:30,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 20:22:30,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 20:22:30,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 20:22:30,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 20:22:30,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 20:22:30,826 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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
[2020-09-24 20:22:31,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 20:22:31,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 20:22:31,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 20:22:31,316 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 20:22:31,317 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 20:22:31,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c
[2020-09-24 20:22:31,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c360a8b0d/37b3857e96f4449ab35e4c2f3e88ccfe/FLAG14536508d
[2020-09-24 20:22:31,975 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 20:22:31,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c
[2020-09-24 20:22:31,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c360a8b0d/37b3857e96f4449ab35e4c2f3e88ccfe/FLAG14536508d
[2020-09-24 20:22:32,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c360a8b0d/37b3857e96f4449ab35e4c2f3e88ccfe
[2020-09-24 20:22:32,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 20:22:32,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 20:22:32,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 20:22:32,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 20:22:32,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 20:22:32,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:32" (1/1) ...
[2020-09-24 20:22:32,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4085ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32, skipping insertion in model container
[2020-09-24 20:22:32,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:32" (1/1) ...
[2020-09-24 20:22:32,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 20:22:32,356 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 20:22:32,665 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:22:32,671 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 20:22:32,802 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:22:32,827 INFO L208 MainTranslator]: Completed translation
[2020-09-24 20:22:32,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32 WrapperNode
[2020-09-24 20:22:32,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 20:22:32,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 20:22:32,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 20:22:32,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 20:22:32,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32" (1/1) ...
[2020-09-24 20:22:32,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32" (1/1) ...
[2020-09-24 20:22:32,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32" (1/1) ...
[2020-09-24 20:22:32,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32" (1/1) ...
[2020-09-24 20:22:32,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32" (1/1) ...
[2020-09-24 20:22:32,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32" (1/1) ...
[2020-09-24 20:22:32,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32" (1/1) ...
[2020-09-24 20:22:32,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 20:22:32,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 20:22:32,892 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 20:22:32,892 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 20:22:32,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32" (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 20:22:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 20:22:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 20:22:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float
[2020-09-24 20:22:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float
[2020-09-24 20:22:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 20:22:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 20:22:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2020-09-24 20:22:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float
[2020-09-24 20:22:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 20:22:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-24 20:22:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 20:22:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 20:22:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-24 20:22:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 20:22:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float
[2020-09-24 20:22:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 20:22:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 20:22:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real
[2020-09-24 20:22:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 20:22:33,546 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 20:22:33,546 INFO L295 CfgBuilder]: Removed 14 assume(true) statements.
[2020-09-24 20:22:33,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:33 BoogieIcfgContainer
[2020-09-24 20:22:33,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 20:22:33,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 20:22:33,556 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 20:22:33,559 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 20:22:33,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:32" (1/3) ...
[2020-09-24 20:22:33,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59505ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:33, skipping insertion in model container
[2020-09-24 20:22:33,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:32" (2/3) ...
[2020-09-24 20:22:33,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59505ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:33, skipping insertion in model container
[2020-09-24 20:22:33,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:33" (3/3) ...
[2020-09-24 20:22:33,564 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c
[2020-09-24 20:22:33,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 20:22:33,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 20:22:33,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 20:22:33,651 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 20:22:33,651 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 20:22:33,651 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 20:22:33,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 20:22:33,652 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 20:22:33,652 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 20:22:33,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 20:22:33,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 20:22:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states.
[2020-09-24 20:22:33,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2020-09-24 20:22:33,695 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 20:22:33,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 20:22:33,697 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:22:33,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:22:33,706 INFO L82 PathProgramCache]: Analyzing trace with hash -309473205, now seen corresponding path program 1 times
[2020-09-24 20:22:33,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:22:33,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958255432]
[2020-09-24 20:22:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:22:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:22:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:22:33,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:22:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:22:34,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:22:34,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60
[2020-09-24 20:22:34,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 20:22:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411
[2020-09-24 20:22:34,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:22:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:22:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48
[2020-09-24 20:22:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:22:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6
[2020-09-24 20:22:34,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:22:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:22:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:22:34,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:22:34,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-24 20:22:34,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:22:34,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-09-24 20:22:34,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:22:34,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:22:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:22:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:22:34,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:22:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-09-24 20:22:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:22:34,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:22:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:22:34,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:22:34,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 20:22:34,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 20:22:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-24 20:22:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:22:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:22:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:22:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:22:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:22:34,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 20:22:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:22:34,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:22:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:22:34,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:22:34,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 20:22:34,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 20:22:34,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 20:22:34,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:22:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:22:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-24 20:22:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:22:34,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:22:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 20:22:34,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958255432]
[2020-09-24 20:22:34,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:22:34,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 20:22:34,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591340338]
[2020-09-24 20:22:34,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 20:22:34,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:22:34,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 20:22:34,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 20:22:34,504 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states.
[2020-09-24 20:22:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:22:34,983 INFO L93 Difference]: Finished difference Result 306 states and 369 transitions.
[2020-09-24 20:22:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-24 20:22:34,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49
[2020-09-24 20:22:34,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:22:35,001 INFO L225 Difference]: With dead ends: 306
[2020-09-24 20:22:35,002 INFO L226 Difference]: Without dead ends: 155
[2020-09-24 20:22:35,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 20:22:35,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2020-09-24 20:22:35,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155.
[2020-09-24 20:22:35,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states.
[2020-09-24 20:22:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions.
[2020-09-24 20:22:35,073 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 49
[2020-09-24 20:22:35,074 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:22:35,074 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions.
[2020-09-24 20:22:35,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 20:22:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions.
[2020-09-24 20:22:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2020-09-24 20:22:35,078 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 20:22:35,078 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 20:22:35,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 20:22:35,079 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:22:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:22:35,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1032631156, now seen corresponding path program 1 times
[2020-09-24 20:22:35,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:22:35,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802435480]
[2020-09-24 20:22:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:22:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 20:22:35,155 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 20:22:35,155 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 20:22:35,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 20:22:35,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:22:35 BoogieIcfgContainer
[2020-09-24 20:22:35,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 20:22:35,189 INFO L168 Benchmark]: Toolchain (without parser) took 2889.83 ms. Allocated memory was 146.8 MB in the beginning and 235.9 MB in the end (delta: 89.1 MB). Free memory was 103.2 MB in the beginning and 151.7 MB in the end (delta: -48.4 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB.
[2020-09-24 20:22:35,190 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 20:22:35,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.44 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 179.5 MB in the end (delta: -76.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB.
[2020-09-24 20:22:35,192 INFO L168 Benchmark]: Boogie Preprocessor took 62.75 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 176.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB.
[2020-09-24 20:22:35,193 INFO L168 Benchmark]: RCFGBuilder took 662.21 ms. Allocated memory is still 202.9 MB. Free memory was 176.8 MB in the beginning and 140.6 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB.
[2020-09-24 20:22:35,194 INFO L168 Benchmark]: TraceAbstraction took 1629.86 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 140.0 MB in the beginning and 151.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB.
[2020-09-24 20:22:35,198 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 526.44 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 179.5 MB in the end (delta: -76.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 62.75 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 176.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 662.21 ms. Allocated memory is still 202.9 MB. Free memory was 176.8 MB in the beginning and 140.6 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1629.86 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 140.0 MB in the beginning and 151.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31.
Possible FailurePath:
[L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = {
0.0,
-0.0,
};
[L126] float x = __VERIFIER_nondet_float();
[L127] float y = -1.0f / 0.0f;
[L129] CALL isfinite_float(x)
[L109] __int32_t ix;
[L111] ieee_float_shape_type gf_u;
[L112] gf_u.value = (x)
[L113] EXPR gf_u.word
[L113] (ix) = gf_u.word
[L115] ix &= 0x7fffffff
[L116] return (((ix) < 0x7f800000L));
[L129] RET isfinite_float(x)
[L129] COND TRUE isfinite_float(x)
[L131] CALL, EXPR fmod_float(x, y)
[L18] __int32_t n, hx, hy, hz, ix, iy, sx, i;
[L21] ieee_float_shape_type gf_u;
[L22] gf_u.value = (x)
[L23] EXPR gf_u.word
[L23] (hx) = gf_u.word
[L26] ieee_float_shape_type gf_u;
[L27] gf_u.value = (y)
[L28] EXPR gf_u.word
[L28] (hy) = gf_u.word
[L30] sx = hx & 0x80000000
[L31] hx ^= sx
[L32] hy &= 0x7fffffff
[L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L)
[L35] return (x * y) / (x * y);
[L131] RET, EXPR fmod_float(x, y)
[L131] float res = fmod_float(x, y);
[L134] COND TRUE res != x
[L135] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 31 SDslu, 128 SDs, 0 SdLazy, 190 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...