/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=SHALLOWEST --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_1010.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 23:44:23,923 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 23:44:23,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 23:44:23,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 23:44:23,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 23:44:23,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 23:44:23,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 23:44:23,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 23:44:23,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 23:44:23,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 23:44:23,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 23:44:23,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 23:44:23,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 23:44:23,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 23:44:23,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 23:44:23,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 23:44:23,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 23:44:23,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 23:44:23,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 23:44:23,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 23:44:23,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 23:44:23,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 23:44:23,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 23:44:23,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 23:44:23,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 23:44:23,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 23:44:23,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 23:44:23,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 23:44:23,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 23:44:23,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 23:44:23,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 23:44:23,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 23:44:24,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 23:44:24,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 23:44:24,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 23:44:24,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 23:44:24,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 23:44:24,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 23:44:24,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 23:44:24,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 23:44:24,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 23:44:24,009 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 23:44:24,037 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 23:44:24,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 23:44:24,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 23:44:24,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 23:44:24,039 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 23:44:24,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 23:44:24,040 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 23:44:24,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 23:44:24,040 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 23:44:24,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 23:44:24,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 23:44:24,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 23:44:24,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 23:44:24,041 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 23:44:24,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 23:44:24,042 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 23:44:24,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 23:44:24,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 23:44:24,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 23:44:24,043 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 23:44:24,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 23:44:24,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 23:44:24,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 23:44:24,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 23:44:24,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 23:44:24,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 23:44:24,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 23:44:24,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 23:44:24,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 23:44:24,045 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true;
[2020-09-24 23:44:24,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 23:44:24,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 23:44:24,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 23:44:24,555 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 23:44:24,556 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 23:44:24,557 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1010.c
[2020-09-24 23:44:24,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20000a1e0/fcd470c2075d4a4e95b7475d1f62b27f/FLAG19cb311ec
[2020-09-24 23:44:25,190 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 23:44:25,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1010.c
[2020-09-24 23:44:25,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20000a1e0/fcd470c2075d4a4e95b7475d1f62b27f/FLAG19cb311ec
[2020-09-24 23:44:25,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20000a1e0/fcd470c2075d4a4e95b7475d1f62b27f
[2020-09-24 23:44:25,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 23:44:25,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 23:44:25,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 23:44:25,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 23:44:25,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 23:44:25,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:25" (1/1) ...
[2020-09-24 23:44:25,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fad44cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25, skipping insertion in model container
[2020-09-24 23:44:25,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:25" (1/1) ...
[2020-09-24 23:44:25,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 23:44:25,611 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 23:44:25,897 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:44:25,903 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 23:44:25,934 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:44:25,967 INFO L208 MainTranslator]: Completed translation
[2020-09-24 23:44:25,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25 WrapperNode
[2020-09-24 23:44:25,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 23:44:25,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 23:44:25,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 23:44:25,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 23:44:25,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25" (1/1) ...
[2020-09-24 23:44:25,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25" (1/1) ...
[2020-09-24 23:44:26,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25" (1/1) ...
[2020-09-24 23:44:26,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25" (1/1) ...
[2020-09-24 23:44:26,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25" (1/1) ...
[2020-09-24 23:44:26,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25" (1/1) ...
[2020-09-24 23:44:26,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25" (1/1) ...
[2020-09-24 23:44:26,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 23:44:26,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 23:44:26,141 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 23:44:26,141 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 23:44:26,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25" (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 23:44:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 23:44:26,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 23:44:26,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float
[2020-09-24 23:44:26,218 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float
[2020-09-24 23:44:26,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 23:44:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 23:44:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2020-09-24 23:44:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float
[2020-09-24 23:44:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float
[2020-09-24 23:44:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 23:44:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-24 23:44:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 23:44:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 23:44:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 23:44:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-24 23:44:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 23:44:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 23:44:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 23:44:26,618 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 23:44:26,619 INFO L295 CfgBuilder]: Removed 4 assume(true) statements.
[2020-09-24 23:44:26,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:26 BoogieIcfgContainer
[2020-09-24 23:44:26,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 23:44:26,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 23:44:26,626 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 23:44:26,629 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 23:44:26,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:44:25" (1/3) ...
[2020-09-24 23:44:26,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503cb7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:26, skipping insertion in model container
[2020-09-24 23:44:26,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:25" (2/3) ...
[2020-09-24 23:44:26,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503cb7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:26, skipping insertion in model container
[2020-09-24 23:44:26,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:26" (3/3) ...
[2020-09-24 23:44:26,634 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c
[2020-09-24 23:44:26,644 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 23:44:26,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 23:44:26,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 23:44:26,708 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 23:44:26,709 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 23:44:26,709 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 23:44:26,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 23:44:26,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 23:44:26,709 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 23:44:26,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 23:44:26,710 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 23:44:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states.
[2020-09-24 23:44:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-09-24 23:44:26,742 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 23:44:26,743 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]
[2020-09-24 23:44:26,744 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:44:26,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:44:26,751 INFO L82 PathProgramCache]: Analyzing trace with hash -618451774, now seen corresponding path program 1 times
[2020-09-24 23:44:26,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:44:26,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657094066]
[2020-09-24 23:44:26,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:44:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:44:26,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:44:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:44:27,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:44:27,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38
[2020-09-24 23:44:27,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:44:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168
[2020-09-24 23:44:27,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:44:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:44:27,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 23:44:27,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:44:27,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7
[2020-09-24 23:44:27,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:44:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:44:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:44:27,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:44:27,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 23:44:27,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:44:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-09-24 23:44:27,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:44:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:44:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:44:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:44:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 23:44:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-09-24 23:44:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:44:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:44:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:44:27,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:44:27,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 23:44:27,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:44:27,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 23:44:27,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:44:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:44:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-09-24 23:44:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:44:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:44:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-09-24 23:44:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:44:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:44:27,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:44:27,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 23:44:27,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:44:27,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 23:44:27,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:44:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:44:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-09-24 23:44:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:44:27,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:44:27,307 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 23:44:27,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657094066]
[2020-09-24 23:44:27,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 23:44:27,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 23:44:27,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165284098]
[2020-09-24 23:44:27,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 23:44:27,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:44:27,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 23:44:27,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 23:44:27,341 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states.
[2020-09-24 23:44:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:44:27,517 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions.
[2020-09-24 23:44:27,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-24 23:44:27,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27
[2020-09-24 23:44:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:44:27,532 INFO L225 Difference]: With dead ends: 94
[2020-09-24 23:44:27,533 INFO L226 Difference]: Without dead ends: 46
[2020-09-24 23:44:27,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 23:44:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2020-09-24 23:44:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2020-09-24 23:44:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-09-24 23:44:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions.
[2020-09-24 23:44:27,583 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 27
[2020-09-24 23:44:27,584 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:44:27,584 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions.
[2020-09-24 23:44:27,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 23:44:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions.
[2020-09-24 23:44:27,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-24 23:44:27,586 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 23:44:27,586 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]
[2020-09-24 23:44:27,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 23:44:27,587 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:44:27,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:44:27,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2001690657, now seen corresponding path program 1 times
[2020-09-24 23:44:27,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:44:27,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086522791]
[2020-09-24 23:44:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:44:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 23:44:27,629 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 23:44:27,629 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 23:44:27,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 23:44:27,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:44:27 BoogieIcfgContainer
[2020-09-24 23:44:27,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 23:44:27,663 INFO L168 Benchmark]: Toolchain (without parser) took 2104.71 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 109.1 MB in the end (delta: -6.5 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB.
[2020-09-24 23:44:27,664 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 23:44:27,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.64 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 91.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
[2020-09-24 23:44:27,666 INFO L168 Benchmark]: Boogie Preprocessor took 171.31 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.6 MB in the beginning and 181.2 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB.
[2020-09-24 23:44:27,667 INFO L168 Benchmark]: RCFGBuilder took 483.48 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 163.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB.
[2020-09-24 23:44:27,668 INFO L168 Benchmark]: TraceAbstraction took 1033.80 ms. Allocated memory is still 203.4 MB. Free memory was 162.6 MB in the beginning and 109.1 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB.
[2020-09-24 23:44:27,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 406.64 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 91.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 171.31 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.6 MB in the beginning and 181.2 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 483.48 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 163.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1033.80 ms. Allocated memory is still 203.4 MB. Free memory was 162.6 MB in the beginning and 109.1 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 40]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseAnd at line 23.
Possible FailurePath:
[L35] float x = 0.0f / 0.0f;
[L36] CALL, EXPR fabs_float(x)
[L15] __uint32_t ix;
[L17] ieee_float_shape_type gf_u;
[L18] gf_u.value = (x)
[L19] EXPR gf_u.word
[L19] (ix) = gf_u.word
[L22] ieee_float_shape_type sf_u;
[L23] sf_u.word = (ix & 0x7fffffff)
[L24] EXPR sf_u.value
[L24] (x) = sf_u.value
[L26] return x;
[L36] RET, EXPR fabs_float(x)
[L36] float res = fabs_float(x);
[L39] CALL, EXPR isnan_float(res)
[L12] return x != x;
[L39] RET, EXPR isnan_float(res)
[L39] COND TRUE !isnan_float(res)
[L40] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 13 SDslu, 30 SDs, 0 SdLazy, 53 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 1222 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...