/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_1031.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 10:39:46,541 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 10:39:46,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 10:39:46,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 10:39:46,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 10:39:46,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 10:39:46,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 10:39:46,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 10:39:46,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 10:39:46,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 10:39:46,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 10:39:46,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 10:39:46,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 10:39:46,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 10:39:46,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 10:39:46,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 10:39:46,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 10:39:46,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 10:39:46,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 10:39:46,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 10:39:46,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 10:39:46,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 10:39:46,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 10:39:46,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 10:39:46,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 10:39:46,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 10:39:46,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 10:39:46,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 10:39:46,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 10:39:46,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 10:39:46,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 10:39:46,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 10:39:46,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 10:39:46,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 10:39:46,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 10:39:46,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 10:39:46,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 10:39:46,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 10:39:46,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 10:39:46,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 10:39:46,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 10:39:46,596 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 10:39:46,610 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 10:39:46,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 10:39:46,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 10:39:46,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 10:39:46,612 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 10:39:46,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 10:39:46,612 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 10:39:46,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 10:39:46,613 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 10:39:46,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 10:39:46,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 10:39:46,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 10:39:46,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 10:39:46,614 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 10:39:46,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 10:39:46,614 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 10:39:46,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 10:39:46,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 10:39:46,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 10:39:46,615 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 10:39:46,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 10:39:46,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 10:39:46,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 10:39:46,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 10:39:46,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 10:39:46,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 10:39:46,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:46,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 10:39:46,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 10:39:46,617 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 10:39:46,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 10:39:46,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 10:39:46,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 10:39:46,911 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 10:39:46,911 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 10:39:46,912 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c
[2020-07-21 10:39:46,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0ddd6c9/2515cb99918f44628296b1fb2733742e/FLAGb57a722b8
[2020-07-21 10:39:47,343 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 10:39:47,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c
[2020-07-21 10:39:47,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0ddd6c9/2515cb99918f44628296b1fb2733742e/FLAGb57a722b8
[2020-07-21 10:39:47,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0ddd6c9/2515cb99918f44628296b1fb2733742e
[2020-07-21 10:39:47,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 10:39:47,752 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 10:39:47,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 10:39:47,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 10:39:47,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 10:39:47,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:47" (1/1) ...
[2020-07-21 10:39:47,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614eb612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:47, skipping insertion in model container
[2020-07-21 10:39:47,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:47" (1/1) ...
[2020-07-21 10:39:47,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 10:39:47,794 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 10:39:47,972 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:39:47,976 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 10:39:48,007 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:39:48,112 INFO L208 MainTranslator]: Completed translation
[2020-07-21 10:39:48,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48 WrapperNode
[2020-07-21 10:39:48,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 10:39:48,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 10:39:48,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 10:39:48,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 10:39:48,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 10:39:48,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 10:39:48,165 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 10:39:48,165 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 10:39:48,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (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 10:39:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 10:39:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 10:39:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double
[2020-07-21 10:39:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double
[2020-07-21 10:39:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 10:39:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 10:39:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double
[2020-07-21 10:39:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure round_double
[2020-07-21 10:39:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-21 10:39:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-07-21 10:39:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 10:39:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 10:39:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 10:39:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-07-21 10:39:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 10:39:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 10:39:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 10:39:48,680 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 10:39:48,680 INFO L295 CfgBuilder]: Removed 4 assume(true) statements.
[2020-07-21 10:39:48,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:48 BoogieIcfgContainer
[2020-07-21 10:39:48,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 10:39:48,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 10:39:48,686 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 10:39:48,689 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 10:39:48,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:47" (1/3) ...
[2020-07-21 10:39:48,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddb4857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:48, skipping insertion in model container
[2020-07-21 10:39:48,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (2/3) ...
[2020-07-21 10:39:48,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddb4857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:48, skipping insertion in model container
[2020-07-21 10:39:48,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:48" (3/3) ...
[2020-07-21 10:39:48,693 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c
[2020-07-21 10:39:48,703 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 10:39:48,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 10:39:48,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 10:39:48,762 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 10:39:48,763 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 10:39:48,763 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 10:39:48,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 10:39:48,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 10:39:48,763 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 10:39:48,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 10:39:48,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 10:39:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states.
[2020-07-21 10:39:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-07-21 10:39:48,805 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:39:48,806 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]
[2020-07-21 10:39:48,807 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:39:48,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:39:48,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1071653874, now seen corresponding path program 1 times
[2020-07-21 10:39:48,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:39:48,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064633167]
[2020-07-21 10:39:48,825 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 10:39:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:39:48,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 10:39:48,991 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:39:49,017 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 10:39:49,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:39:49,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064633167]
[2020-07-21 10:39:49,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:39:49,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 10:39:49,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49962964]
[2020-07-21 10:39:49,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 10:39:49,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:39:49,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 10:39:49,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 10:39:49,046 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states.
[2020-07-21 10:39:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:39:49,072 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions.
[2020-07-21 10:39:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-21 10:39:49,073 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23
[2020-07-21 10:39:49,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:39:49,085 INFO L225 Difference]: With dead ends: 70
[2020-07-21 10:39:49,086 INFO L226 Difference]: Without dead ends: 35
[2020-07-21 10:39:49,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 10:39:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-07-21 10:39:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2020-07-21 10:39:49,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-07-21 10:39:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions.
[2020-07-21 10:39:49,136 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 23
[2020-07-21 10:39:49,137 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:39:49,137 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions.
[2020-07-21 10:39:49,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 10:39:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions.
[2020-07-21 10:39:49,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-07-21 10:39:49,139 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:39:49,139 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]
[2020-07-21 10:39:49,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:49,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:39:49,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:39:49,356 INFO L82 PathProgramCache]: Analyzing trace with hash -308920579, now seen corresponding path program 1 times
[2020-07-21 10:39:49,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:39:49,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015025001]
[2020-07-21 10:39:49,358 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 10:39:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:39:49,433 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:39:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:39:49,462 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:39:49,488 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 10:39:49,488 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 10:39:49,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:49,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:39:49 BoogieIcfgContainer
[2020-07-21 10:39:49,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 10:39:49,737 INFO L168 Benchmark]: Toolchain (without parser) took 1984.61 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.1 MB in the beginning and 120.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:49,738 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
[2020-07-21 10:39:49,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.11 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.7 MB in the beginning and 182.4 MB in the end (delta: -79.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:49,740 INFO L168 Benchmark]: Boogie Preprocessor took 51.29 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 180.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:49,741 INFO L168 Benchmark]: RCFGBuilder took 519.30 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 160.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:49,742 INFO L168 Benchmark]: TraceAbstraction took 1048.73 ms. Allocated memory is still 203.9 MB. Free memory was 159.9 MB in the beginning and 120.8 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:49,746 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 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 360.11 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.7 MB in the beginning and 182.4 MB in the end (delta: -79.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 51.29 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 180.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 519.30 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 160.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1048.73 ms. Allocated memory is still 203.9 MB. Free memory was 159.9 MB in the beginning and 120.8 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of shiftRight at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 74, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 15.
Possible FailurePath:
[L74] double x = 0.0 / 0.0;
[L75] CALL, EXPR round_double(x)
VAL [\old(x)=3]
[L18] __int32_t msw, exponent_less_1023;
[L19] __uint32_t lsw;
VAL [\old(x)=3, x=3]
[L21] ieee_double_shape_type ew_u;
[L22] ew_u.value = (x)
[L23] EXPR ew_u.parts.msw
[L23] (msw) = ew_u.parts.msw
[L24] EXPR ew_u.parts.lsw
[L24] (lsw) = ew_u.parts.lsw
[L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023
VAL [\old(x)=3, exponent_less_1023=0, lsw=0, msw=2147483647, x=3]
[L27] COND TRUE exponent_less_1023 < 20
VAL [\old(x)=3, exponent_less_1023=0, lsw=0, msw=2147483647, x=3]
[L28] COND FALSE !(exponent_less_1023 < 0)
[L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023;
VAL [\old(x)=3, exponent_less_1023=0, lsw=0, msw=2147483647, x=3]
[L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0
[L36] return x;
VAL [\old(x)=3, \result=3, exponent_less_1023=0, lsw=0, msw=2147483647, x=3]
[L75] RET, EXPR round_double(x)
VAL [round_double(x)=3, x=3]
[L75] double res = round_double(x);
[L78] CALL, EXPR isnan_double(res)
VAL [\old(x)=3]
[L15] return x != x;
VAL [\old(x)=3, \result=0, x=3]
[L78] RET, EXPR isnan_double(res)
VAL [isnan_double(res)=0, res=3, x=3]
[L78] COND TRUE !isnan_double(res)
[L79] __VERIFIER_error()
VAL [res=3, x=3]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 39 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: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 75 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...