/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/double_req_bl_1092a.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 11:05:08,311 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 11:05:08,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 11:05:08,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 11:05:08,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 11:05:08,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 11:05:08,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 11:05:08,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 11:05:08,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 11:05:08,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 11:05:08,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 11:05:08,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 11:05:08,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 11:05:08,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 11:05:08,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 11:05:08,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 11:05:08,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 11:05:08,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 11:05:08,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 11:05:08,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 11:05:08,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 11:05:08,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 11:05:08,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 11:05:08,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 11:05:08,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 11:05:08,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 11:05:08,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 11:05:08,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 11:05:08,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 11:05:08,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 11:05:08,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 11:05:08,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 11:05:08,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 11:05:08,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 11:05:08,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 11:05:08,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 11:05:08,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 11:05:08,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 11:05:08,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 11:05:08,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 11:05:08,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 11:05:08,451 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
[2020-09-25 11:05:08,501 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 11:05:08,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 11:05:08,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 11:05:08,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 11:05:08,505 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 11:05:08,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 11:05:08,506 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 11:05:08,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 11:05:08,506 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 11:05:08,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 11:05:08,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 11:05:08,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 11:05:08,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 11:05:08,508 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 11:05:08,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 11:05:08,509 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 11:05:08,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 11:05:08,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 11:05:08,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 11:05:08,510 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 11:05:08,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 11:05:08,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 11:05:08,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 11:05:08,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 11:05:08,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 11:05:08,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 11:05:08,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 11:05:08,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 11:05:08,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 11:05:08,512 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;
[2020-09-25 11:05:09,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 11:05:09,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 11:05:09,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 11:05:09,035 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 11:05:09,035 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 11:05:09,036 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c
[2020-09-25 11:05:09,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302957302/2c3fc1654ab641deb23c4ac8d4a2e76b/FLAGf7446f9c6
[2020-09-25 11:05:09,651 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 11:05:09,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c
[2020-09-25 11:05:09,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302957302/2c3fc1654ab641deb23c4ac8d4a2e76b/FLAGf7446f9c6
[2020-09-25 11:05:09,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302957302/2c3fc1654ab641deb23c4ac8d4a2e76b
[2020-09-25 11:05:09,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 11:05:09,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 11:05:09,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 11:05:09,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 11:05:09,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 11:05:09,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:09" (1/1) ...
[2020-09-25 11:05:09,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da81866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:09, skipping insertion in model container
[2020-09-25 11:05:09,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:09" (1/1) ...
[2020-09-25 11:05:10,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 11:05:10,030 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 11:05:10,273 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 11:05:10,278 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 11:05:10,319 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 11:05:10,437 INFO L208 MainTranslator]: Completed translation
[2020-09-25 11:05:10,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10 WrapperNode
[2020-09-25 11:05:10,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 11:05:10,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 11:05:10,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 11:05:10,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 11:05:10,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10" (1/1) ...
[2020-09-25 11:05:10,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10" (1/1) ...
[2020-09-25 11:05:10,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10" (1/1) ...
[2020-09-25 11:05:10,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10" (1/1) ...
[2020-09-25 11:05:10,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10" (1/1) ...
[2020-09-25 11:05:10,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10" (1/1) ...
[2020-09-25 11:05:10,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10" (1/1) ...
[2020-09-25 11:05:10,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 11:05:10,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 11:05:10,494 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 11:05:10,494 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 11:05:10,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10" (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
[2020-09-25 11:05:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 11:05:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 11:05:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double
[2020-09-25 11:05:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double
[2020-09-25 11:05:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 11:05:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 11:05:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double
[2020-09-25 11:05:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double
[2020-09-25 11:05:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 11:05:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-25 11:05:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 11:05:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 11:05:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 11:05:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-25 11:05:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 11:05:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 11:05:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 11:05:11,009 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 11:05:11,009 INFO L295 CfgBuilder]: Removed 4 assume(true) statements.
[2020-09-25 11:05:11,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:11 BoogieIcfgContainer
[2020-09-25 11:05:11,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 11:05:11,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 11:05:11,019 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 11:05:11,023 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 11:05:11,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:05:09" (1/3) ...
[2020-09-25 11:05:11,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4241d951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:11, skipping insertion in model container
[2020-09-25 11:05:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:10" (2/3) ...
[2020-09-25 11:05:11,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4241d951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:11, skipping insertion in model container
[2020-09-25 11:05:11,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:11" (3/3) ...
[2020-09-25 11:05:11,027 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c
[2020-09-25 11:05:11,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 11:05:11,050 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 11:05:11,076 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 11:05:11,116 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 11:05:11,116 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 11:05:11,116 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 11:05:11,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 11:05:11,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 11:05:11,117 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 11:05:11,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 11:05:11,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 11:05:11,143 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states.
[2020-09-25 11:05:11,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-09-25 11:05:11,152 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 11:05:11,154 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]
[2020-09-25 11:05:11,154 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 11:05:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 11:05:11,163 INFO L82 PathProgramCache]: Analyzing trace with hash -270741431, now seen corresponding path program 1 times
[2020-09-25 11:05:11,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 11:05:11,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122998523]
[2020-09-25 11:05:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 11:05:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 11:05:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 11:05:11,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 11:05:11,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37
[2020-09-25 11:05:11,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 11:05:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117
[2020-09-25 11:05:11,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 11:05:11,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 11:05:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 11:05:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25
[2020-09-25 11:05:11,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 11:05:11,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 11:05:11,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 11:05:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 11:05:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 11:05:11,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 11:05:11,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 11:05:11,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 11:05:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-25 11:05:11,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 11:05:11,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 11:05:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 11:05:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 11:05:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 11:05:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 11:05:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 11:05:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 11:05:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 11:05:11,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 11:05:11,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20
[2020-09-25 11:05:11,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 11:05:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-25 11:05:11,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 11:05:11,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 11:05:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 11:05:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9
[2020-09-25 11:05:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 11:05:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 11:05:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 11:05:11,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122998523]
[2020-09-25 11:05:11,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 11:05:11,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-25 11:05:11,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208911816]
[2020-09-25 11:05:11,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-25 11:05:11,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 11:05:11,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-25 11:05:11,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-25 11:05:11,690 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 4 states.
[2020-09-25 11:05:12,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 11:05:12,067 INFO L93 Difference]: Finished difference Result 165 states and 203 transitions.
[2020-09-25 11:05:12,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-25 11:05:12,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28
[2020-09-25 11:05:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 11:05:12,089 INFO L225 Difference]: With dead ends: 165
[2020-09-25 11:05:12,089 INFO L226 Difference]: Without dead ends: 85
[2020-09-25 11:05:12,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-25 11:05:12,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2020-09-25 11:05:12,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2020-09-25 11:05:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-25 11:05:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions.
[2020-09-25 11:05:12,160 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 28
[2020-09-25 11:05:12,161 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 11:05:12,161 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions.
[2020-09-25 11:05:12,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-25 11:05:12,161 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions.
[2020-09-25 11:05:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-09-25 11:05:12,164 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 11:05:12,164 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]
[2020-09-25 11:05:12,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 11:05:12,165 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 11:05:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 11:05:12,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1616691539, now seen corresponding path program 1 times
[2020-09-25 11:05:12,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 11:05:12,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092045847]
[2020-09-25 11:05:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 11:05:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 11:05:12,230 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 11:05:12,230 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 11:05:12,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 11:05:12,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:05:12 BoogieIcfgContainer
[2020-09-25 11:05:12,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 11:05:12,263 INFO L168 Benchmark]: Toolchain (without parser) took 2284.96 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 87.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB.
[2020-09-25 11:05:12,264 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
[2020-09-25 11:05:12,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.82 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 179.5 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB.
[2020-09-25 11:05:12,266 INFO L168 Benchmark]: Boogie Preprocessor took 55.41 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 177.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
[2020-09-25 11:05:12,267 INFO L168 Benchmark]: RCFGBuilder took 523.18 ms. Allocated memory is still 201.3 MB. Free memory was 177.6 MB in the beginning and 151.1 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB.
[2020-09-25 11:05:12,268 INFO L168 Benchmark]: TraceAbstraction took 1241.07 ms. Allocated memory is still 201.3 MB. Free memory was 151.1 MB in the beginning and 87.0 MB in the end (delta: 64.1 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB.
[2020-09-25 11:05:12,272 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 455.82 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 179.5 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 55.41 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 177.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 523.18 ms. Allocated memory is still 201.3 MB. Free memory was 177.6 MB in the beginning and 151.1 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1241.07 ms. Allocated memory is still 201.3 MB. Free memory was 151.1 MB in the beginning and 87.0 MB in the end (delta: 64.1 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53, overapproximation of someBinaryDOUBLEComparisonOperation at line 95.
Possible FailurePath:
[L17] static const double huge_ceil = 1.0e300;
[L91] double x = -0.0;
[L92] CALL, EXPR ceil_double(x)
[L20] __int32_t i0, i1, j0;
[L21] __uint32_t i, j;
[L23] ieee_double_shape_type ew_u;
[L24] ew_u.value = (x)
[L25] EXPR ew_u.parts.msw
[L25] (i0) = ew_u.parts.msw
[L26] EXPR ew_u.parts.lsw
[L26] (i1) = ew_u.parts.lsw
[L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff
[L29] COND FALSE !(j0 < 20)
[L51] COND TRUE j0 > 51
[L52] COND TRUE j0 == 0x400
[L53] return x + x;
[L92] RET, EXPR ceil_double(x)
[L92] double res = ceil_double(x);
[L95] COND TRUE res != x
[L96] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 15 SDslu, 79 SDs, 0 SdLazy, 110 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred 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, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1377 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...