/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:31:26,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:31:26,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:31:26,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:31:26,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:31:26,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:31:26,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:31:26,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:31:26,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:31:26,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:31:26,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:31:26,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:31:26,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:31:26,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:31:26,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:31:26,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:31:26,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:31:26,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:31:26,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:31:26,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:31:26,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:31:26,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:31:26,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:31:26,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:31:26,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:31:26,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:31:26,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:31:26,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:31:26,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:31:26,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:31:26,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:31:26,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:31:26,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:31:26,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:31:26,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:31:26,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:31:26,504 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:31:26,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:31:26,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:31:26,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:26,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:31:26,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:31:26,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:31:26,505 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:31:26,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:31:26,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:31:26,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:31:26,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:31:26,820 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:31:26,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2020-08-22 18:31:26,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697ddd333/0d8a20cecbb74b738ca086b1de8a443c/FLAG2300273d0 [2020-08-22 18:31:27,318 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:31:27,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2020-08-22 18:31:27,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697ddd333/0d8a20cecbb74b738ca086b1de8a443c/FLAG2300273d0 [2020-08-22 18:31:27,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697ddd333/0d8a20cecbb74b738ca086b1de8a443c [2020-08-22 18:31:27,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:31:27,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:31:27,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:27,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:31:27,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:31:27,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:27" (1/1) ... [2020-08-22 18:31:27,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d423800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27, skipping insertion in model container [2020-08-22 18:31:27,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:27" (1/1) ... [2020-08-22 18:31:27,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:31:27,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:31:27,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:27,923 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:31:27,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:27,975 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:31:27,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27 WrapperNode [2020-08-22 18:31:27,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:27,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:31:27,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:31:27,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:31:28,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27" (1/1) ... [2020-08-22 18:31:28,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27" (1/1) ... [2020-08-22 18:31:28,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27" (1/1) ... [2020-08-22 18:31:28,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27" (1/1) ... [2020-08-22 18:31:28,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27" (1/1) ... [2020-08-22 18:31:28,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27" (1/1) ... [2020-08-22 18:31:28,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27" (1/1) ... [2020-08-22 18:31:28,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:31:28,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:31:28,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:31:28,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:31:28,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27" (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 [2020-08-22 18:31:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:31:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:31:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 18:31:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-22 18:31:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:31:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:31:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 18:31:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-22 18:31:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:31:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:31:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:31:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:31:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:31:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:31:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:31:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:31:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:31:28,583 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:31:28,583 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 18:31:28,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:28 BoogieIcfgContainer [2020-08-22 18:31:28,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:31:28,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:31:28,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:31:28,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:31:28,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:31:27" (1/3) ... [2020-08-22 18:31:28,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a34d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:28, skipping insertion in model container [2020-08-22 18:31:28,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:27" (2/3) ... [2020-08-22 18:31:28,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a34d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:28, skipping insertion in model container [2020-08-22 18:31:28,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:28" (3/3) ... [2020-08-22 18:31:28,596 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2020-08-22 18:31:28,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:31:28,610 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:31:28,622 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:31:28,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:31:28,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:31:28,640 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:31:28,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:31:28,640 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:31:28,640 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:31:28,640 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:31:28,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:31:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2020-08-22 18:31:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 18:31:28,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:28,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:31:28,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash -270741431, now seen corresponding path program 1 times [2020-08-22 18:31:28,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:28,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450273869] [2020-08-22 18:31:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:28,728 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:28,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:31:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:28,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 18:31:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:31:28,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450273869] [2020-08-22 18:31:28,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:31:28,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:31:28,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079582084] [2020-08-22 18:31:28,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:31:28,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:31:28,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:31:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:31:28,946 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 4 states. [2020-08-22 18:31:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:31:29,213 INFO L93 Difference]: Finished difference Result 165 states and 203 transitions. [2020-08-22 18:31:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:31:29,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-08-22 18:31:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:31:29,229 INFO L225 Difference]: With dead ends: 165 [2020-08-22 18:31:29,229 INFO L226 Difference]: Without dead ends: 85 [2020-08-22 18:31:29,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:31:29,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-08-22 18:31:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-08-22 18:31:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 18:31:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2020-08-22 18:31:29,287 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 28 [2020-08-22 18:31:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:31:29,288 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2020-08-22 18:31:29,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:31:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2020-08-22 18:31:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 18:31:29,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:29,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:31:29,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:31:29,292 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:29,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:29,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1616691539, now seen corresponding path program 1 times [2020-08-22 18:31:29,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:29,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992596096] [2020-08-22 18:31:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:29,296 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:29,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:29,377 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:29,418 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:31:29,418 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:31:29,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:31:29,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:31:29 BoogieIcfgContainer [2020-08-22 18:31:29,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:31:29,464 INFO L168 Benchmark]: Toolchain (without parser) took 1763.36 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 101.7 MB in the beginning and 94.5 MB in the end (delta: 7.2 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:29,465 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:31:29,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.05 ms. Allocated memory is still 144.2 MB. Free memory was 101.2 MB in the beginning and 89.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:29,468 INFO L168 Benchmark]: Boogie Preprocessor took 150.37 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 89.9 MB in the beginning and 180.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:29,469 INFO L168 Benchmark]: RCFGBuilder took 461.11 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 154.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:29,471 INFO L168 Benchmark]: TraceAbstraction took 872.10 ms. Allocated memory is still 202.9 MB. Free memory was 154.0 MB in the beginning and 94.5 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:29,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.05 ms. Allocated memory is still 144.2 MB. Free memory was 101.2 MB in the beginning and 89.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.37 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 89.9 MB in the beginning and 180.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 461.11 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 154.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 872.10 ms. Allocated memory is still 202.9 MB. Free memory was 154.0 MB in the beginning and 94.5 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 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 someBinaryDOUBLEComparisonOperation at line 95, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = 0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [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 [L29] COND FALSE !(j0 < 20) [L51] COND TRUE j0 > 51 [L52] COND TRUE j0 == 0x400 [L53] return x + x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 15 SDslu, 79 SDs, 0 SdLazy, 110 SolverSat, 4 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred 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: No data available, 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...