/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-benchs/cast_union_tight.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 23:43:39,658 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 23:43:39,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 23:43:39,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 23:43:39,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 23:43:39,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 23:43:39,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 23:43:39,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 23:43:39,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 23:43:39,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 23:43:39,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 23:43:39,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 23:43:39,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 23:43:39,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 23:43:39,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 23:43:39,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 23:43:39,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 23:43:39,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 23:43:39,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 23:43:39,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 23:43:39,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 23:43:39,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 23:43:39,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 23:43:39,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 23:43:39,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 23:43:39,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 23:43:39,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 23:43:39,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 23:43:39,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 23:43:39,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 23:43:39,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 23:43:39,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 23:43:39,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 23:43:39,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 23:43:39,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 23:43:39,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 23:43:39,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 23:43:39,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 23:43:39,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 23:43:39,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 23:43:39,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 23:43:39,792 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 23:43:39,819 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 23:43:39,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 23:43:39,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 23:43:39,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 23:43:39,821 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 23:43:39,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 23:43:39,822 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 23:43:39,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 23:43:39,822 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 23:43:39,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 23:43:39,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 23:43:39,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 23:43:39,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 23:43:39,823 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 23:43:39,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 23:43:39,823 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 23:43:39,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 23:43:39,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 23:43:39,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 23:43:39,824 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 23:43:39,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 23:43:39,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 23:43:39,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 23:43:39,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 23:43:39,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 23:43:39,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 23:43:39,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 23:43:39,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 23:43:39,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 23:43:39,826 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=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 23:43:40,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 23:43:40,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 23:43:40,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 23:43:40,391 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 23:43:40,392 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 23:43:40,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c
[2020-09-24 23:43:40,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04e0b3b43/c1d01d219fa141e68b6e54e03ffdb107/FLAG7a67715c3
[2020-09-24 23:43:40,985 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 23:43:40,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/cast_union_tight.c
[2020-09-24 23:43:40,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04e0b3b43/c1d01d219fa141e68b6e54e03ffdb107/FLAG7a67715c3
[2020-09-24 23:43:41,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04e0b3b43/c1d01d219fa141e68b6e54e03ffdb107
[2020-09-24 23:43:41,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 23:43:41,357 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 23:43:41,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 23:43:41,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 23:43:41,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 23:43:41,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:43:41" (1/1) ...
[2020-09-24 23:43:41,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321fecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41, skipping insertion in model container
[2020-09-24 23:43:41,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:43:41" (1/1) ...
[2020-09-24 23:43:41,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 23:43:41,409 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 23:43:41,630 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:43:41,635 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 23:43:41,660 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:43:41,682 INFO L208 MainTranslator]: Completed translation
[2020-09-24 23:43:41,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41 WrapperNode
[2020-09-24 23:43:41,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 23:43:41,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 23:43:41,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 23:43:41,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 23:43:41,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41" (1/1) ...
[2020-09-24 23:43:41,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41" (1/1) ...
[2020-09-24 23:43:41,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41" (1/1) ...
[2020-09-24 23:43:41,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41" (1/1) ...
[2020-09-24 23:43:41,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41" (1/1) ...
[2020-09-24 23:43:41,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41" (1/1) ...
[2020-09-24 23:43:41,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41" (1/1) ...
[2020-09-24 23:43:41,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 23:43:41,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 23:43:41,805 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 23:43:41,805 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 23:43:41,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41" (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 23:43:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 23:43:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 23:43:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 23:43:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure cast
[2020-09-24 23:43:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 23:43:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 23:43:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 23:43:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 23:43:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure cast
[2020-09-24 23:43:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 23:43:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 23:43:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 23:43:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-24 23:43:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 23:43:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 23:43:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 23:43:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 23:43:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-24 23:43:42,180 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 23:43:42,181 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 23:43:42,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:43:42 BoogieIcfgContainer
[2020-09-24 23:43:42,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 23:43:42,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 23:43:42,188 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 23:43:42,192 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 23:43:42,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:43:41" (1/3) ...
[2020-09-24 23:43:42,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d511bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:43:42, skipping insertion in model container
[2020-09-24 23:43:42,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:41" (2/3) ...
[2020-09-24 23:43:42,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d511bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:43:42, skipping insertion in model container
[2020-09-24 23:43:42,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:43:42" (3/3) ...
[2020-09-24 23:43:42,196 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c
[2020-09-24 23:43:42,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 23:43:42,217 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 23:43:42,241 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 23:43:42,269 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 23:43:42,269 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 23:43:42,269 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 23:43:42,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 23:43:42,269 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 23:43:42,270 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 23:43:42,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 23:43:42,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 23:43:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states.
[2020-09-24 23:43:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-09-24 23:43:42,303 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 23:43:42,304 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]
[2020-09-24 23:43:42,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:43:42,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:43:42,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1594393316, now seen corresponding path program 1 times
[2020-09-24 23:43:42,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:43:42,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194057482]
[2020-09-24 23:43:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:43:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 23:43:42,546 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 23:43:42,547 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 23:43:42,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 23:43:42,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:43:42 BoogieIcfgContainer
[2020-09-24 23:43:42,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 23:43:42,579 INFO L168 Benchmark]: Toolchain (without parser) took 1225.22 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 148.5 MB in the end (delta: -45.8 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB.
[2020-09-24 23:43:42,580 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 23:43:42,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.55 ms. Allocated memory is still 140.0 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
[2020-09-24 23:43:42,582 INFO L168 Benchmark]: Boogie Preprocessor took 121.29 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB.
[2020-09-24 23:43:42,584 INFO L168 Benchmark]: RCFGBuilder took 381.71 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 162.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB.
[2020-09-24 23:43:42,585 INFO L168 Benchmark]: TraceAbstraction took 387.62 ms. Allocated memory is still 202.9 MB. Free memory was 162.6 MB in the beginning and 148.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
[2020-09-24 23:43:42,589 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 322.55 ms. Allocated memory is still 140.0 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 121.29 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 381.71 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 162.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 387.62 ms. Allocated memory is still 202.9 MB. Free memory was 162.6 MB in the beginning and 148.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of bitwiseXor at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21.
Possible FailurePath:
[L26] int a;
[L27] double r;
[L29] a = __VERIFIER_nondet_int()
[L31] CALL, EXPR cast(a)
[L16] union u x, y;
[L17] x.i[0] = 0x43300000
[L18] EXPR x.i[0]
[L18] y.i[0] = x.i[0]
[L19] x.i[1] = 0x80000000
[L20] EXPR x.i[1]
[L20] y.i[1] = i ^ x.i[1]
[L21] EXPR y.d
[L21] EXPR x.d
[L21] return y.d - x.d;
[L21] return y.d - x.d;
[L21] return y.d - x.d;
[L31] RET, EXPR cast(a)
[L31] r = cast(a)
[L32] CALL __VERIFIER_assert(r == a)
[L7] COND TRUE !(cond)
[L7] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...