/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=LOWLEXORDER --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_1052b.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:30:31,899 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:30:31,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:30:31,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:30:31,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:30:31,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:30:31,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 21:30:31,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 21:30:31,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 21:30:31,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 21:30:31,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 21:30:31,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 21:30:31,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:30:31,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:30:31,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:30:31,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:30:31,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:30:31,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:30:31,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:30:31,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:30:31,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:30:31,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:30:31,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:30:31,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:30:31,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:30:31,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:30:31,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:30:31,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:30:31,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 21:30:31,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 21:30:31,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 21:30:31,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 21:30:31,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 21:30:31,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:30:31,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:30:31,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 21:30:31,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 21:30:31,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 21:30:31,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 21:30:31,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 21:30:31,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:30:31,978 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 21:30:32,005 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 21:30:32,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:30:32,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:30:32,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 21:30:32,007 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 21:30:32,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:30:32,008 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 21:30:32,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 21:30:32,008 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 21:30:32,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 21:30:32,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:30:32,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:30:32,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:30:32,009 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 21:30:32,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 21:30:32,010 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 21:30:32,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:30:32,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:30:32,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 21:30:32,011 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 21:30:32,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 21:30:32,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:30:32,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:30:32,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:30:32,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:30:32,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 21:30:32,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:30:32,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:30:32,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 21:30:32,013 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true;
[2020-09-24 21:30:32,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:30:32,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:30:32,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:30:32,543 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 21:30:32,544 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 21:30:32,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c
[2020-09-24 21:30:32,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c68bd9bf/b6b1a2a9c5984fd8a5275da1445c7461/FLAG3c4c86fcc
[2020-09-24 21:30:33,173 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 21:30:33,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c
[2020-09-24 21:30:33,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c68bd9bf/b6b1a2a9c5984fd8a5275da1445c7461/FLAG3c4c86fcc
[2020-09-24 21:30:33,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c68bd9bf/b6b1a2a9c5984fd8a5275da1445c7461
[2020-09-24 21:30:33,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:30:33,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:30:33,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:30:33,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:30:33,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:30:33,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:33" (1/1) ...
[2020-09-24 21:30:33,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f92ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33, skipping insertion in model container
[2020-09-24 21:30:33,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:33" (1/1) ...
[2020-09-24 21:30:33,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 21:30:33,556 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:30:33,826 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:30:33,831 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 21:30:33,865 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:30:33,919 INFO L208 MainTranslator]: Completed translation
[2020-09-24 21:30:33,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33 WrapperNode
[2020-09-24 21:30:33,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:30:33,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:30:33,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:30:33,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:30:34,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33" (1/1) ...
[2020-09-24 21:30:34,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33" (1/1) ...
[2020-09-24 21:30:34,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33" (1/1) ...
[2020-09-24 21:30:34,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33" (1/1) ...
[2020-09-24 21:30:34,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33" (1/1) ...
[2020-09-24 21:30:34,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33" (1/1) ...
[2020-09-24 21:30:34,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33" (1/1) ...
[2020-09-24 21:30:34,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:30:34,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:30:34,044 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:30:34,044 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:30:34,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33" (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 21:30:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:30:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:30:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float
[2020-09-24 21:30:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float
[2020-09-24 21:30:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:30:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:30:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float
[2020-09-24 21:30:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 21:30:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-24 21:30:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 21:30:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 21:30:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 21:30:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-24 21:30:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float
[2020-09-24 21:30:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:30:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:30:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:30:34,580 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:30:34,581 INFO L295 CfgBuilder]: Removed 6 assume(true) statements.
[2020-09-24 21:30:34,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:34 BoogieIcfgContainer
[2020-09-24 21:30:34,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:30:34,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:30:34,589 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:30:34,592 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:30:34,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:33" (1/3) ...
[2020-09-24 21:30:34,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3569be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:34, skipping insertion in model container
[2020-09-24 21:30:34,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:33" (2/3) ...
[2020-09-24 21:30:34,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3569be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:34, skipping insertion in model container
[2020-09-24 21:30:34,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:34" (3/3) ...
[2020-09-24 21:30:34,597 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052b.c
[2020-09-24 21:30:34,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:30:34,619 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:30:34,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:30:34,667 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:30:34,667 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 21:30:34,668 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:30:34,668 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:30:34,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:30:34,668 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 21:30:34,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:30:34,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:30:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states.
[2020-09-24 21:30:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2020-09-24 21:30:34,700 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 21:30:34,702 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]
[2020-09-24 21:30:34,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:30:34,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:30:34,709 INFO L82 PathProgramCache]: Analyzing trace with hash 270857975, now seen corresponding path program 1 times
[2020-09-24 21:30:34,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:30:34,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810951590]
[2020-09-24 21:30:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:30:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:30:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:30:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:30:35,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:30:35,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48
[2020-09-24 21:30:35,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:30:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258
[2020-09-24 21:30:35,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:30:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:30:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-09-24 21:30:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:30:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 21:30:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:30:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:30:35,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:30:35,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:30:35,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 21:30:35,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:30:35,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-24 21:30:35,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:30:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:30:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:30:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:30:35,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:30:35,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 21:30:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:30:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:30:35,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:30:35,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-09-24 21:30:35,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:30:35,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70
[2020-09-24 21:30:35,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:30:35,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:30:35,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:30:35,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:30:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:30:35,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 21:30:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:30:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:30:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:30:35,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:30:35,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 21:30:35,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:30:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-24 21:30:35,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:30:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:30:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-09-24 21:30:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:30:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:30:35,408 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 21:30:35,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810951590]
[2020-09-24 21:30:35,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:30:35,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 21:30:35,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606319870]
[2020-09-24 21:30:35,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 21:30:35,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:30:35,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 21:30:35,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 21:30:35,443 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states.
[2020-09-24 21:30:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:30:35,712 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions.
[2020-09-24 21:30:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-24 21:30:35,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37
[2020-09-24 21:30:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:30:35,728 INFO L225 Difference]: With dead ends: 160
[2020-09-24 21:30:35,729 INFO L226 Difference]: Without dead ends: 81
[2020-09-24 21:30:35,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 21:30:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2020-09-24 21:30:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81.
[2020-09-24 21:30:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-09-24 21:30:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions.
[2020-09-24 21:30:35,792 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 37
[2020-09-24 21:30:35,792 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:30:35,792 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions.
[2020-09-24 21:30:35,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 21:30:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions.
[2020-09-24 21:30:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2020-09-24 21:30:35,796 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 21:30:35,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:30:35,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:30:35,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:30:35,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:30:35,797 INFO L82 PathProgramCache]: Analyzing trace with hash 822923104, now seen corresponding path program 1 times
[2020-09-24 21:30:35,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:30:35,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733630829]
[2020-09-24 21:30:35,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:30:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 21:30:35,867 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 21:30:35,872 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 21:30:35,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 21:30:35,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:30:35 BoogieIcfgContainer
[2020-09-24 21:30:35,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 21:30:35,946 INFO L168 Benchmark]: Toolchain (without parser) took 2440.45 ms. Allocated memory was 138.9 MB in the beginning and 222.3 MB in the end (delta: 83.4 MB). Free memory was 102.5 MB in the beginning and 109.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB.
[2020-09-24 21:30:35,947 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 21:30:35,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.26 ms. Allocated memory was 138.9 MB in the beginning and 169.9 MB in the end (delta: 30.9 MB). Free memory was 101.8 MB in the beginning and 145.5 MB in the end (delta: -43.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB.
[2020-09-24 21:30:35,951 INFO L168 Benchmark]: Boogie Preprocessor took 122.26 ms. Allocated memory was 169.9 MB in the beginning and 222.3 MB in the end (delta: 52.4 MB). Free memory was 145.5 MB in the beginning and 206.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 748.9 kB. Max. memory is 7.1 GB.
[2020-09-24 21:30:35,953 INFO L168 Benchmark]: RCFGBuilder took 542.85 ms. Allocated memory is still 222.3 MB. Free memory was 206.9 MB in the beginning and 182.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB.
[2020-09-24 21:30:35,955 INFO L168 Benchmark]: TraceAbstraction took 1352.69 ms. Allocated memory is still 222.3 MB. Free memory was 181.1 MB in the beginning and 109.2 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB.
[2020-09-24 21:30:35,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 413.26 ms. Allocated memory was 138.9 MB in the beginning and 169.9 MB in the end (delta: 30.9 MB). Free memory was 101.8 MB in the beginning and 145.5 MB in the end (delta: -43.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 122.26 ms. Allocated memory was 169.9 MB in the beginning and 222.3 MB in the end (delta: 52.4 MB). Free memory was 145.5 MB in the beginning and 206.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 748.9 kB. Max. memory is 7.1 GB.
* RCFGBuilder took 542.85 ms. Allocated memory is still 222.3 MB. Free memory was 206.9 MB in the beginning and 182.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1352.69 ms. Allocated memory is still 222.3 MB. Free memory was 181.1 MB in the beginning and 109.2 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64.
Possible FailurePath:
[L11] static const float huge_floor = 1.0e30;
[L75] float x = -1.0f / 0.0f;
[L76] CALL, EXPR floor_float(x)
[L14] __int32_t i0, j0;
[L15] __uint32_t i, ix;
[L17] ieee_float_shape_type gf_u;
[L18] gf_u.value = (x)
[L19] EXPR gf_u.word
[L19] (i0) = gf_u.word
[L21] ix = (i0 & 0x7fffffff)
[L22] j0 = (ix >> 23) - 0x7f
[L23] COND FALSE !(j0 < 23)
[L43] COND TRUE !((ix) < 0x7f800000L)
[L44] return x + x;
[L76] RET, EXPR floor_float(x)
[L76] float res = floor_float(x);
[L79] CALL, EXPR isinf_float(res)
[L58] __int32_t ix;
[L60] ieee_float_shape_type gf_u;
[L61] gf_u.value = (x)
[L62] EXPR gf_u.word
[L62] (ix) = gf_u.word
[L64] ix &= 0x7fffffff
[L65] return ((ix) == 0x7f800000L);
[L79] RET, EXPR isinf_float(res)
[L79] COND TRUE !isinf_float(res)
[L80] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 17 SDslu, 68 SDs, 0 SdLazy, 100 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred 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, 0.5s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2592 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...