/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 10:39:51,928 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 10:39:51,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 10:39:51,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 10:39:51,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 10:39:51,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 10:39:51,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 10:39:51,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 10:39:51,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 10:39:51,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 10:39:51,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 10:39:51,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 10:39:51,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 10:39:51,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 10:39:51,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 10:39:51,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 10:39:51,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 10:39:51,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 10:39:51,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 10:39:51,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 10:39:51,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 10:39:52,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 10:39:52,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 10:39:52,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 10:39:52,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 10:39:52,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 10:39:52,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 10:39:52,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 10:39:52,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2020-07-21 10:39:52,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 10:39:52,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 10:39:52,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-07-21 10:39:52,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 10:39:52,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 10:39:52,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 10:39:52,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 10:39:52,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 10:39:52,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 10:39:52,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 10:39:52,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-21 10:39:52,042 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 10:39:52,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 10:39:52,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 10:39:52,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 10:39:52,044 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 10:39:52,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 10:39:52,045 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 10:39:52,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 10:39:52,045 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 10:39:52,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 10:39:52,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 10:39:52,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 10:39:52,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 10:39:52,046 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 10:39:52,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 10:39:52,046 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 10:39:52,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 10:39:52,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 10:39:52,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 10:39:52,047 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 10:39:52,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 10:39:52,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 10:39:52,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 10:39:52,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 10:39:52,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 10:39:52,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 10:39:52,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:52,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 10:39:52,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 10:39:52,049 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 -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY
[2020-07-21 10:39:52,333 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 10:39:52,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 10:39:52,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 10:39:52,351 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 10:39:52,351 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 10:39:52,352 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c
[2020-07-21 10:39:52,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29461c64d/1ff9783c45524c85a8457ef93d6b26d0/FLAGa96029d16
[2020-07-21 10:39:52,919 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 10:39:52,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c
[2020-07-21 10:39:52,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29461c64d/1ff9783c45524c85a8457ef93d6b26d0/FLAGa96029d16
[2020-07-21 10:39:53,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29461c64d/1ff9783c45524c85a8457ef93d6b26d0
[2020-07-21 10:39:53,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 10:39:53,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 10:39:53,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 10:39:53,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 10:39:53,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 10:39:53,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:53" (1/1) ...
[2020-07-21 10:39:53,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e0f48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53, skipping insertion in model container
[2020-07-21 10:39:53,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:53" (1/1) ...
[2020-07-21 10:39:53,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 10:39:53,338 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 10:39:53,584 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:39:53,588 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 10:39:53,619 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:39:53,735 INFO L208 MainTranslator]: Completed translation
[2020-07-21 10:39:53,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53 WrapperNode
[2020-07-21 10:39:53,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 10:39:53,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 10:39:53,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 10:39:53,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 10:39:53,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53" (1/1) ...
[2020-07-21 10:39:53,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53" (1/1) ...
[2020-07-21 10:39:53,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53" (1/1) ...
[2020-07-21 10:39:53,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53" (1/1) ...
[2020-07-21 10:39:53,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53" (1/1) ...
[2020-07-21 10:39:53,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53" (1/1) ...
[2020-07-21 10:39:53,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53" (1/1) ...
[2020-07-21 10:39:53,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 10:39:53,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 10:39:53,785 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 10:39:53,785 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 10:39:53,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53" (1/1) ...
No working directory specified, using /storage/repos/ultimate/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
[2020-07-21 10:39:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 10:39:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 10:39:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double
[2020-07-21 10:39:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double
[2020-07-21 10:39:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double
[2020-07-21 10:39:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 10:39:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 10:39:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double
[2020-07-21 10:39:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double
[2020-07-21 10:39:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-21 10:39:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-07-21 10:39:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 10:39:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 10:39:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 10:39:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-07-21 10:39:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double
[2020-07-21 10:39:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 10:39:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 10:39:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 10:39:54,255 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 10:39:54,255 INFO L295 CfgBuilder]: Removed 10 assume(true) statements.
[2020-07-21 10:39:54,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:54 BoogieIcfgContainer
[2020-07-21 10:39:54,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 10:39:54,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 10:39:54,261 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 10:39:54,264 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 10:39:54,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:53" (1/3) ...
[2020-07-21 10:39:54,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b2345a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:54, skipping insertion in model container
[2020-07-21 10:39:54,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:53" (2/3) ...
[2020-07-21 10:39:54,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b2345a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:54, skipping insertion in model container
[2020-07-21 10:39:54,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:54" (3/3) ...
[2020-07-21 10:39:54,268 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c
[2020-07-21 10:39:54,278 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 10:39:54,286 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 10:39:54,300 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 10:39:54,323 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 10:39:54,324 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 10:39:54,324 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 10:39:54,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 10:39:54,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 10:39:54,324 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 10:39:54,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 10:39:54,324 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 10:39:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states.
[2020-07-21 10:39:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-07-21 10:39:54,348 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:39:54,349 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]
[2020-07-21 10:39:54,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:39:54,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:39:54,355 INFO L82 PathProgramCache]: Analyzing trace with hash -48260949, now seen corresponding path program 1 times
[2020-07-21 10:39:54,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:39:54,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59676745]
[2020-07-21 10:39:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:39:54,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 10:39:54,512 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:39:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:39:54,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:39:54,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59676745]
[2020-07-21 10:39:54,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:39:54,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 10:39:54,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166938339]
[2020-07-21 10:39:54,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 10:39:54,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:39:54,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 10:39:54,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 10:39:54,576 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states.
[2020-07-21 10:39:54,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:39:54,600 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions.
[2020-07-21 10:39:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-21 10:39:54,602 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25
[2020-07-21 10:39:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:39:54,612 INFO L225 Difference]: With dead ends: 72
[2020-07-21 10:39:54,612 INFO L226 Difference]: Without dead ends: 36
[2020-07-21 10:39:54,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 10:39:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2020-07-21 10:39:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2020-07-21 10:39:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-07-21 10:39:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions.
[2020-07-21 10:39:54,656 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25
[2020-07-21 10:39:54,657 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:39:54,657 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions.
[2020-07-21 10:39:54,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 10:39:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions.
[2020-07-21 10:39:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-07-21 10:39:54,659 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:39:54,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:39:54,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:54,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:39:54,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:39:54,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1916763246, now seen corresponding path program 1 times
[2020-07-21 10:39:54,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:39:54,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652736826]
[2020-07-21 10:39:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:39:54,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:39:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:39:54,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:39:55,005 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 10:39:55,006 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 10:39:55,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:55,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:39:55 BoogieIcfgContainer
[2020-07-21 10:39:55,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 10:39:55,261 INFO L168 Benchmark]: Toolchain (without parser) took 1973.11 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.2 MB in the beginning and 110.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:55,262 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-21 10:39:55,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.54 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 182.3 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:55,264 INFO L168 Benchmark]: Boogie Preprocessor took 47.22 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 179.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:55,265 INFO L168 Benchmark]: RCFGBuilder took 475.21 ms. Allocated memory is still 203.4 MB. Free memory was 179.3 MB in the beginning and 155.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:55,266 INFO L168 Benchmark]: TraceAbstraction took 997.59 ms. Allocated memory is still 203.4 MB. Free memory was 154.7 MB in the beginning and 110.8 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:55,270 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 447.54 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 182.3 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 47.22 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 179.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 475.21 ms. Allocated memory is still 203.4 MB. Free memory was 179.3 MB in the beginning and 155.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 997.59 ms. Allocated memory is still 203.4 MB. Free memory was 154.7 MB in the beginning and 110.8 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of bitwiseOr at line 72, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71.
Possible FailurePath:
[L84] double x = -1.0 / 0.0;
[L85] CALL, EXPR trunc_double(x)
VAL [\old(x)=0]
[L18] int signbit;
[L19] int msw;
[L20] unsigned int lsw;
[L21] int exponent_less_1023;
VAL [\old(x)=0, x=0]
[L23] ieee_double_shape_type ew_u;
[L24] ew_u.value = (x)
[L25] EXPR ew_u.parts.msw
[L25] (msw) = ew_u.parts.msw
[L26] EXPR ew_u.parts.lsw
[L26] (lsw) = ew_u.parts.lsw
[L28] signbit = msw & 0x80000000
[L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023
VAL [\old(x)=0, exponent_less_1023=1024, lsw=11, msw=0, signbit=28100, x=0]
[L30] COND FALSE !(exponent_less_1023 < 20)
VAL [\old(x)=0, exponent_less_1023=1024, lsw=11, msw=0, signbit=28100, x=0]
[L47] COND TRUE exponent_less_1023 > 51
VAL [\old(x)=0, exponent_less_1023=1024, lsw=11, msw=0, signbit=28100, x=0]
[L48] COND TRUE exponent_less_1023 == 1024
[L49] return x + x;
VAL [\old(x)=0, exponent_less_1023=1024, lsw=11, msw=0, signbit=28100, x=0]
[L85] RET, EXPR trunc_double(x)
VAL [trunc_double(x)=2, x=0]
[L85] double res = trunc_double(x);
[L88] CALL, EXPR isinf_double(res)
VAL [\old(x)=2]
[L64] __int32_t hx, lx;
VAL [\old(x)=2, x=2]
[L66] ieee_double_shape_type ew_u;
[L67] ew_u.value = (x)
[L68] EXPR ew_u.parts.msw
[L68] (hx) = ew_u.parts.msw
[L69] EXPR ew_u.parts.lsw
[L69] (lx) = ew_u.parts.lsw
[L71] hx &= 0x7fffffff
[L72] hx |= (__uint32_t)(lx | (-lx)) >> 31
[L73] hx = 0x7ff00000 - hx
[L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31);
VAL [\old(x)=2, \result=0, hx=2146435072, lx=2147483647, x=2]
[L88] RET, EXPR isinf_double(res)
VAL [isinf_double(res)=0, res=2, x=0]
[L88] COND TRUE !isinf_double(res)
[L89] __VERIFIER_error()
VAL [res=2, x=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 0.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 1 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...