/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 00:30:31,910 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 00:30:31,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 00:30:31,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 00:30:31,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 00:30:31,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 00:30:31,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 00:30:31,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 00:30:31,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 00:30:31,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 00:30:31,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 00:30:31,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 00:30:31,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 00:30:31,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 00:30:31,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 00:30:31,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 00:30:31,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 00:30:31,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 00:30:31,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 00:30:31,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 00:30:31,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 00:30:31,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 00:30:31,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 00:30:31,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 00:30:31,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 00:30:31,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 00:30:31,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 00:30:31,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 00:30:31,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 00:30:31,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 00:30:31,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 00:30:31,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 00:30:31,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 00:30:31,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 00:30:31,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 00:30:31,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 00:30:31,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 00:30:31,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 00:30:31,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 00:30:31,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 00:30:31,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 00:30:31,960 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 00:30:31,975 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 00:30:31,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 00:30:31,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 00:30:31,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 00:30:31,977 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 00:30:31,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 00:30:31,977 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 00:30:31,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 00:30:31,978 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 00:30:31,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 00:30:31,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 00:30:31,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 00:30:31,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 00:30:31,979 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 00:30:31,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 00:30:31,979 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 00:30:31,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 00:30:31,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 00:30:31,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 00:30:31,980 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 00:30:31,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 00:30:31,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 00:30:31,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 00:30:31,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 00:30:31,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 00:30:31,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 00:30:31,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 00:30:31,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 00:30:31,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 00:30:31,982 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 -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-21 00:30:32,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 00:30:32,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 00:30:32,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 00:30:32,289 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 00:30:32,289 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 00:30:32,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c
[2020-07-21 00:30:32,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b804ed337/251fa5faa7034a078186a1ad05d2fc17/FLAG9d3ddb9ce
[2020-07-21 00:30:32,814 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 00:30:32,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly2.c
[2020-07-21 00:30:32,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b804ed337/251fa5faa7034a078186a1ad05d2fc17/FLAG9d3ddb9ce
[2020-07-21 00:30:33,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b804ed337/251fa5faa7034a078186a1ad05d2fc17
[2020-07-21 00:30:33,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 00:30:33,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 00:30:33,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 00:30:33,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 00:30:33,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 00:30:33,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:33" (1/1) ...
[2020-07-21 00:30:33,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65136dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33, skipping insertion in model container
[2020-07-21 00:30:33,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:33" (1/1) ...
[2020-07-21 00:30:33,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 00:30:33,246 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 00:30:33,445 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 00:30:33,450 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 00:30:33,478 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 00:30:33,586 INFO L208 MainTranslator]: Completed translation
[2020-07-21 00:30:33,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33 WrapperNode
[2020-07-21 00:30:33,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 00:30:33,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 00:30:33,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 00:30:33,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 00:30:33,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33" (1/1) ...
[2020-07-21 00:30:33,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33" (1/1) ...
[2020-07-21 00:30:33,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33" (1/1) ...
[2020-07-21 00:30:33,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33" (1/1) ...
[2020-07-21 00:30:33,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33" (1/1) ...
[2020-07-21 00:30:33,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33" (1/1) ...
[2020-07-21 00:30:33,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33" (1/1) ...
[2020-07-21 00:30:33,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 00:30:33,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 00:30:33,629 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 00:30:33,629 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 00:30:33,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33" (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 00:30:33,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 00:30:33,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 00:30:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-21 00:30:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-21 00:30:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom
[2020-07-21 00:30:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 00:30:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 00:30:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double
[2020-07-21 00:30:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-07-21 00:30:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-21 00:30:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-21 00:30:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom
[2020-07-21 00:30:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-21 00:30:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-07-21 00:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 00:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 00:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-07-21 00:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 00:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 00:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 00:30:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 00:30:34,062 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 00:30:34,063 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-21 00:30:34,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:34 BoogieIcfgContainer
[2020-07-21 00:30:34,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 00:30:34,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 00:30:34,068 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 00:30:34,071 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 00:30:34,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:30:33" (1/3) ...
[2020-07-21 00:30:34,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43062c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:34, skipping insertion in model container
[2020-07-21 00:30:34,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:33" (2/3) ...
[2020-07-21 00:30:34,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43062c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:34, skipping insertion in model container
[2020-07-21 00:30:34,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:34" (3/3) ...
[2020-07-21 00:30:34,075 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c
[2020-07-21 00:30:34,086 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 00:30:34,093 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 00:30:34,107 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 00:30:34,132 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 00:30:34,132 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 00:30:34,133 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 00:30:34,133 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 00:30:34,133 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 00:30:34,133 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 00:30:34,133 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 00:30:34,133 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 00:30:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states.
[2020-07-21 00:30:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-07-21 00:30:34,159 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 00:30:34,160 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]
[2020-07-21 00:30:34,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 00:30:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 00:30:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash -306508764, now seen corresponding path program 1 times
[2020-07-21 00:30:34,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 00:30:34,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817872161]
[2020-07-21 00:30:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
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 00:30:34,303 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 00:30:34,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 00:30:34,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 00:30:34,313 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 00:30:34,336 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 00:30:34,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 00:30:34,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817872161]
[2020-07-21 00:30:34,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 00:30:34,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 00:30:34,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080608144]
[2020-07-21 00:30:34,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 00:30:34,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 00:30:34,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 00:30:34,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 00:30:34,363 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states.
[2020-07-21 00:30:34,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 00:30:34,388 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions.
[2020-07-21 00:30:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-21 00:30:34,390 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22
[2020-07-21 00:30:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 00:30:34,400 INFO L225 Difference]: With dead ends: 51
[2020-07-21 00:30:34,400 INFO L226 Difference]: Without dead ends: 23
[2020-07-21 00:30:34,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 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 00:30:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2020-07-21 00:30:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2020-07-21 00:30:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2020-07-21 00:30:34,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions.
[2020-07-21 00:30:34,447 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22
[2020-07-21 00:30:34,448 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 00:30:34,448 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions.
[2020-07-21 00:30:34,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 00:30:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions.
[2020-07-21 00:30:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-07-21 00:30:34,450 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 00:30:34,450 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]
[2020-07-21 00:30:34,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 00:30:34,665 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 00:30:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 00:30:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1317626014, now seen corresponding path program 1 times
[2020-07-21 00:30:34,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 00:30:34,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484470537]
[2020-07-21 00:30:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
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 00:30:34,768 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-21 00:30:34,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-21 00:30:34,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 00:30:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 00:30:34,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 00:30:34,828 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 00:30:34,828 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 00:30:35,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 00:30:35,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:30:35 BoogieIcfgContainer
[2020-07-21 00:30:35,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 00:30:35,089 INFO L168 Benchmark]: Toolchain (without parser) took 1883.70 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.7 MB in the beginning and 115.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB.
[2020-07-21 00:30:35,090 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-21 00:30:35,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.97 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.3 MB in the beginning and 181.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB.
[2020-07-21 00:30:35,092 INFO L168 Benchmark]: Boogie Preprocessor took 40.85 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 180.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB.
[2020-07-21 00:30:35,093 INFO L168 Benchmark]: RCFGBuilder took 437.64 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 161.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB.
[2020-07-21 00:30:35,094 INFO L168 Benchmark]: TraceAbstraction took 1017.87 ms. Allocated memory is still 203.4 MB. Free memory was 161.8 MB in the beginning and 115.0 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB.
[2020-07-21 00:30:35,098 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 380.97 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.3 MB in the beginning and 181.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 40.85 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 180.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 437.64 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 161.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1017.87 ms. Allocated memory is still 203.4 MB. Free memory was 161.8 MB in the beginning and 115.0 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of bitwiseOr at line 36, overapproximation of someUnaryDOUBLEoperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 63.
Possible FailurePath:
[L15] double C0 = 1.414213538;
[L16] double C1 = 0.229761391;
[L17] double C2 = 1.296735525;
[L18] double C3 = -0.901098370;
[L19] double C4 = 0.493553400;
[L20] double C5 = -0.118958666;
VAL [\old(C0)=4, \old(C1)=2, \old(C2)=5, \old(C3)=1, \old(C4)=0, \old(C5)=3, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000]
[L56] double x,y;
[L58] x = __VERIFIER_nondet_double()
[L59] CALL assume_abort_if_not(x >= 1. && x <= 1e10)
VAL [\old(cond)=1, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000]
[L10] COND FALSE !(!cond)
VAL [\old(cond)=1, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=1]
[L59] RET assume_abort_if_not(x >= 1. && x <= 1e10)
VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x=6]
[L61] CALL, EXPR sqrt_custom(x)
VAL [\old(a)=6, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000]
[L29] union u x;
[L30] double r;
[L31] int exp;
[L33] x.d = a
[L35] EXPR x.i[0]
[L35] exp = (x.i[0] & 0x7FF00000) >> 20
[L36] EXPR x.i[0]
[L36] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000
[L37] EXPR x.d
[L37] r = x.d * 0.5
[L39] r = C1+C2+(C3+(C4+C5*r)*r)*r
VAL [\old(a)=6, a=6, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=-2, x={2:0}]
[L41] COND TRUE exp % 2 == 0
[L42] exp++
VAL [\old(a)=6, a=6, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=-1, x={2:0}]
[L48] x.i[0] = (exp/2 + 511) << 20
[L49] EXPR x.d
[L49] r = r * x.d
[L51] return r;
[L51] return r;
VAL [\old(a)=6, \result=9, a=6, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=-1, r=9]
[L61] RET, EXPR sqrt_custom(x)
VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, sqrt_custom(x)=9, x=6]
[L61] y = sqrt_custom(x)
[L63] CALL __VERIFIER_assert(y >= 0. && y <= 1e6)
VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000]
[L12] COND TRUE !(cond)
VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0]
[L12] __VERIFIER_error()
VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 30 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: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 83 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...