/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:55:21,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:55:21,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:55:21,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:55:21,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:55:21,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:55:21,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:55:21,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:55:21,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:55:21,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:55:21,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:55:21,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:55:21,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:55:21,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:55:21,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:55:21,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:55:21,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:55:21,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:55:21,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:55:21,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:55:21,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:55:21,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:55:21,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:55:21,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:55:21,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 10:55:21,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:55:21,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:55:21,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:55:21,359 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 [2020-07-07 10:55:21,393 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:55:21,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:55:21,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:55:21,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:55:21,397 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:55:21,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:55:21,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:55:21,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:55:21,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:55:21,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:55:21,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:55:21,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:55:21,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:55:21,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:55:21,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:55:21,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:55:21,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:55:21,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:55:21,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:55:21,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:55:21,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:55:21,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:55:21,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:55:21,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:55:21,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:55:21,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:55:21,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:55:21,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:55:21,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:55:21,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:55:21,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:55:21,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:55:21,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:55:21,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:55:21,727 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:55:21,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-07-07 10:55:21,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2e01982/4e290ddbe11048ee86299e90e2362d2b/FLAG70719246d [2020-07-07 10:55:22,264 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:55:22,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-07-07 10:55:22,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2e01982/4e290ddbe11048ee86299e90e2362d2b/FLAG70719246d [2020-07-07 10:55:22,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2e01982/4e290ddbe11048ee86299e90e2362d2b [2020-07-07 10:55:22,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:55:22,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:55:22,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:22,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:55:22,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:55:22,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:22" (1/1) ... [2020-07-07 10:55:22,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5a55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:22, skipping insertion in model container [2020-07-07 10:55:22,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:22" (1/1) ... [2020-07-07 10:55:22,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:55:22,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:55:22,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:22,891 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:55:22,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:23,037 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:55:23,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23 WrapperNode [2020-07-07 10:55:23,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:23,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:55:23,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:55:23,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:55:23,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23" (1/1) ... [2020-07-07 10:55:23,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23" (1/1) ... [2020-07-07 10:55:23,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23" (1/1) ... [2020-07-07 10:55:23,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23" (1/1) ... [2020-07-07 10:55:23,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23" (1/1) ... [2020-07-07 10:55:23,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23" (1/1) ... [2020-07-07 10:55:23,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23" (1/1) ... [2020-07-07 10:55:23,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:55:23,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:55:23,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:55:23,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:55:23,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23" (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 [2020-07-07 10:55:23,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:55:23,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:55:23,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-07 10:55:23,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-07-07 10:55:23,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:55:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:55:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-07 10:55:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-07-07 10:55:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 10:55:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 10:55:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 10:55:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 10:55:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 10:55:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 10:55:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:55:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:55:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:55:23,541 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:55:23,541 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 10:55:23,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:23 BoogieIcfgContainer [2020-07-07 10:55:23,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:55:23,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:55:23,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:55:23,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:55:23,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:55:22" (1/3) ... [2020-07-07 10:55:23,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70deb83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:23, skipping insertion in model container [2020-07-07 10:55:23,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:23" (2/3) ... [2020-07-07 10:55:23,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70deb83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:23, skipping insertion in model container [2020-07-07 10:55:23,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:23" (3/3) ... [2020-07-07 10:55:23,553 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-07-07 10:55:23,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:55:23,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:55:23,585 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:55:23,611 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:55:23,611 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:55:23,611 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:55:23,611 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:55:23,612 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:55:23,612 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:55:23,612 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:55:23,612 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:55:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-07 10:55:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 10:55:23,641 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:23,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:55:23,643 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:23,648 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-07-07 10:55:23,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:23,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537124985] [2020-07-07 10:55:23,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:55:23,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537124985] [2020-07-07 10:55:23,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:55:23,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 10:55:23,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812509679] [2020-07-07 10:55:23,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 10:55:23,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:55:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 10:55:23,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:55:23,967 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-07-07 10:55:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:55:24,228 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-07-07 10:55:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 10:55:24,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-07-07 10:55:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:55:24,242 INFO L225 Difference]: With dead ends: 76 [2020-07-07 10:55:24,242 INFO L226 Difference]: Without dead ends: 38 [2020-07-07 10:55:24,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 10:55:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-07 10:55:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-07 10:55:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-07 10:55:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-07-07 10:55:24,295 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-07-07 10:55:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:55:24,296 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-07-07 10:55:24,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 10:55:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-07-07 10:55:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 10:55:24,297 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:24,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:55:24,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:55:24,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:24,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:24,299 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-07-07 10:55:24,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:24,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534468437] [2020-07-07 10:55:24,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:24,460 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 10:55:24,461 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 10:55:24,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:55:24,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 10:55:24 BoogieIcfgContainer [2020-07-07 10:55:24,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 10:55:24,499 INFO L168 Benchmark]: Toolchain (without parser) took 1845.49 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.3 MB in the beginning and 106.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:24,500 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 10:55:24,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.50 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.1 MB in the beginning and 180.8 MB in the end (delta: -79.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:24,503 INFO L168 Benchmark]: Boogie Preprocessor took 45.65 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:24,504 INFO L168 Benchmark]: RCFGBuilder took 460.39 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 157.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:24,505 INFO L168 Benchmark]: TraceAbstraction took 950.29 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 106.8 MB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:24,509 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 384.50 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.1 MB in the beginning and 180.8 MB in the end (delta: -79.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.65 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.39 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 157.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 950.29 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 106.8 MB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: 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 someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] double x = -0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L92] CALL, EXPR ceil_double(x) VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006] [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)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006] [L29] COND TRUE j0 < 20 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006] [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006] [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, \result=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006] [L92] RET, EXPR ceil_double(x) VAL [ceil_double(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006] [L92] double res = ceil_double(x); [L95] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006] [L96] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...