/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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:45:03,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:03,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:03,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:03,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:03,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:03,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:03,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:03,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:03,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:03,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:03,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:03,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:03,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:03,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:03,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:03,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:03,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:03,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:03,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:03,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:03,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:03,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:03,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:03,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:45:03,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:03,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:03,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:03,576 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 [2020-07-20 10:45:03,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:03,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:03,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:03,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:03,593 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:03,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:03,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:03,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:03,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:03,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:03,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:03,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:03,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:03,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:03,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:03,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:03,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:03,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:03,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:03,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:03,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:03,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:03,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:03,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:03,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:03,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:03,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:03,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:03,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:03,598 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 [2020-07-20 10:45:03,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:03,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:03,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:03,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:03,891 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:03,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-07-20 10:45:03,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155b7271d/96de8555df0149ef9563dfaf1aa4f82b/FLAG1af4047e5 [2020-07-20 10:45:04,416 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:04,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-07-20 10:45:04,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155b7271d/96de8555df0149ef9563dfaf1aa4f82b/FLAG1af4047e5 [2020-07-20 10:45:04,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155b7271d/96de8555df0149ef9563dfaf1aa4f82b [2020-07-20 10:45:04,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:04,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:04,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:04,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:04,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:04,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:04" (1/1) ... [2020-07-20 10:45:04,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c5f245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:04, skipping insertion in model container [2020-07-20 10:45:04,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:04" (1/1) ... [2020-07-20 10:45:04,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:04,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:05,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:05,056 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:05,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:05,205 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:05,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05 WrapperNode [2020-07-20 10:45:05,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:05,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:05,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:05,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:05,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05" (1/1) ... [2020-07-20 10:45:05,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05" (1/1) ... [2020-07-20 10:45:05,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05" (1/1) ... [2020-07-20 10:45:05,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05" (1/1) ... [2020-07-20 10:45:05,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05" (1/1) ... [2020-07-20 10:45:05,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05" (1/1) ... [2020-07-20 10:45:05,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05" (1/1) ... [2020-07-20 10:45:05,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:05,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:05,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:05,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:05,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05" (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 [2020-07-20 10:45:05,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:05,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:05,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 10:45:05,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-07-20 10:45:05,318 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 10:45:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-07-20 10:45:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:45:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:45:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:45:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:45:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:45:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:45:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:05,645 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:05,645 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 10:45:05,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:05 BoogieIcfgContainer [2020-07-20 10:45:05,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:05,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:05,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:05,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:05,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:04" (1/3) ... [2020-07-20 10:45:05,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2137a39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:05, skipping insertion in model container [2020-07-20 10:45:05,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:05" (2/3) ... [2020-07-20 10:45:05,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2137a39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:05, skipping insertion in model container [2020-07-20 10:45:05,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:05" (3/3) ... [2020-07-20 10:45:05,659 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-07-20 10:45:05,672 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:05,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:05,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:05,739 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:05,740 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:05,740 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:05,740 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:05,740 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:05,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:05,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:05,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-20 10:45:05,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 10:45:05,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:05,797 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] [2020-07-20 10:45:05,797 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-07-20 10:45:05,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:05,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031484857] [2020-07-20 10:45:05,811 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 [2020-07-20 10:45:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:05,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:45:05,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:45:05,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:05,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031484857] [2020-07-20 10:45:05,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:05,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:45:05,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145711810] [2020-07-20 10:45:05,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:45:05,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:05,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:45:05,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:05,958 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-20 10:45:05,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:05,986 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-07-20 10:45:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:45:05,988 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-20 10:45:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:06,001 INFO L225 Difference]: With dead ends: 86 [2020-07-20 10:45:06,001 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 10:45:06,005 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 [2020-07-20 10:45:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 10:45:06,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-20 10:45:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 10:45:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-07-20 10:45:06,054 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-07-20 10:45:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:06,055 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-07-20 10:45:06,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:45:06,056 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-07-20 10:45:06,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 10:45:06,057 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:06,057 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] [2020-07-20 10:45:06,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:06,272 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:06,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:06,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-07-20 10:45:06,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:06,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728062805] [2020-07-20 10:45:06,275 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 [2020-07-20 10:45:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:06,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:06,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:06,391 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:45:06,391 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:45:06,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:06,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:06 BoogieIcfgContainer [2020-07-20 10:45:06,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:06,643 INFO L168 Benchmark]: Toolchain (without parser) took 1847.38 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 114.2 MB in the end (delta: -11.3 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:06,643 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:06,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.49 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 179.8 MB in the end (delta: -77.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:06,645 INFO L168 Benchmark]: Boogie Preprocessor took 51.40 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 177.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:06,646 INFO L168 Benchmark]: RCFGBuilder took 391.49 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 154.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:06,647 INFO L168 Benchmark]: TraceAbstraction took 988.61 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 114.2 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:06,651 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 409.49 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 179.8 MB in the end (delta: -77.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.40 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 177.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 391.49 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 154.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 988.61 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 114.2 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L90] double x = 0.0 / 0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] CALL, EXPR ceil_double(x) VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=7719, i1=2147483647, x=4] [L29] COND TRUE j0 < 20 VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=7719, i1=2147483647, j0=0, x=4] [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=7719, i1=2147483647, j0=0, x=4] [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; VAL [\old(x)=4, \result=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=7719, i1=2147483647, j0=0, x=4] [L91] RET, EXPR ceil_double(x) VAL [ceil_double(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L15] return x != x; VAL [\old(x)=4, \result=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L94] RET, EXPR isnan_double(res) VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=4, x=4] [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 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=47occurred 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, 78 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...