/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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:31:24,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:31:24,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:31:24,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:31:24,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:31:24,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:31:24,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:31:24,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:31:24,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:31:24,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:31:24,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:31:24,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:31:24,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:31:24,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:31:24,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:31:24,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:31:24,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:31:24,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:31:24,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:31:24,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:31:24,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:31:24,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:31:24,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:31:24,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:31:24,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:31:24,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:31:24,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:31:24,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:31:24,259 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 18:31:24,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:31:24,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:31:24,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:31:24,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:31:24,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:31:24,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:31:24,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:31:24,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:31:24,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:31:24,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:31:24,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:31:24,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:31:24,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:31:24,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:31:24,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:31:24,279 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:31:24,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:31:24,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:31:24,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:24,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:31:24,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:31:24,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:31:24,280 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:31:24,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:31:24,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:31:24,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:31:24,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:31:24,601 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:31:24,601 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 18:31:24,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a61e05c0/faf7b5ba4e7d48dbbe040f69c1611b12/FLAG1ec1b0e77 [2020-08-22 18:31:25,167 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:31:25,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 18:31:25,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a61e05c0/faf7b5ba4e7d48dbbe040f69c1611b12/FLAG1ec1b0e77 [2020-08-22 18:31:25,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a61e05c0/faf7b5ba4e7d48dbbe040f69c1611b12 [2020-08-22 18:31:25,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:31:25,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:31:25,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:25,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:31:25,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:31:25,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:25" (1/1) ... [2020-08-22 18:31:25,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475eccc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25, skipping insertion in model container [2020-08-22 18:31:25,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:25" (1/1) ... [2020-08-22 18:31:25,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:31:25,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:31:25,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:25,757 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:31:25,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:25,897 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:31:25,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25 WrapperNode [2020-08-22 18:31:25,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:25,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:31:25,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:31:25,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:31:25,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25" (1/1) ... [2020-08-22 18:31:25,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25" (1/1) ... [2020-08-22 18:31:25,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25" (1/1) ... [2020-08-22 18:31:25,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25" (1/1) ... [2020-08-22 18:31:25,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25" (1/1) ... [2020-08-22 18:31:25,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25" (1/1) ... [2020-08-22 18:31:25,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25" (1/1) ... [2020-08-22 18:31:25,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:31:25,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:31:25,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:31:25,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:31:25,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25" (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 18:31:26,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:31:26,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:31:26,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 18:31:26,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-22 18:31:26,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 18:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-22 18:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:31:26,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:31:26,400 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 18:31:26,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:26 BoogieIcfgContainer [2020-08-22 18:31:26,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:31:26,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:31:26,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:31:26,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:31:26,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:31:25" (1/3) ... [2020-08-22 18:31:26,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9c828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:26, skipping insertion in model container [2020-08-22 18:31:26,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:25" (2/3) ... [2020-08-22 18:31:26,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9c828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:26, skipping insertion in model container [2020-08-22 18:31:26,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:26" (3/3) ... [2020-08-22 18:31:26,414 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-22 18:31:26,426 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:31:26,433 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:31:26,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:31:26,505 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:31:26,505 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:31:26,506 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:31:26,507 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:31:26,507 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:31:26,507 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:31:26,507 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:31:26,507 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:31:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2020-08-22 18:31:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 18:31:26,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:26,543 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 18:31:26,543 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:26,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:26,549 INFO L82 PathProgramCache]: Analyzing trace with hash -270741431, now seen corresponding path program 1 times [2020-08-22 18:31:26,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:26,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006237128] [2020-08-22 18:31:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:26,614 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:31:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:26,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 18:31:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:26,778 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 18:31:26,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006237128] [2020-08-22 18:31:26,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:31:26,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:31:26,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505068539] [2020-08-22 18:31:26,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:31:26,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:31:26,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:31:26,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:31:26,808 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 4 states. [2020-08-22 18:31:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:31:27,091 INFO L93 Difference]: Finished difference Result 165 states and 203 transitions. [2020-08-22 18:31:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:31:27,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-08-22 18:31:27,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:31:27,107 INFO L225 Difference]: With dead ends: 165 [2020-08-22 18:31:27,107 INFO L226 Difference]: Without dead ends: 85 [2020-08-22 18:31:27,112 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 18:31:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-08-22 18:31:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-08-22 18:31:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 18:31:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2020-08-22 18:31:27,168 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 28 [2020-08-22 18:31:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:31:27,169 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2020-08-22 18:31:27,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:31:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2020-08-22 18:31:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 18:31:27,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:27,172 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 18:31:27,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:31:27,172 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:27,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1616691539, now seen corresponding path program 1 times [2020-08-22 18:31:27,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:27,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473256672] [2020-08-22 18:31:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:27,177 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:27,262 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:27,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:27,342 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:31:27,342 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:31:27,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:31:27,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:31:27 BoogieIcfgContainer [2020-08-22 18:31:27,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:31:27,365 INFO L168 Benchmark]: Toolchain (without parser) took 1835.94 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.9 MB in the beginning and 93.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:27,366 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 18:31:27,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.70 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 180.1 MB in the end (delta: -76.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:27,369 INFO L168 Benchmark]: Boogie Preprocessor took 48.31 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 178.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:27,369 INFO L168 Benchmark]: RCFGBuilder took 457.97 ms. Allocated memory is still 203.4 MB. Free memory was 178.2 MB in the beginning and 152.8 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:27,370 INFO L168 Benchmark]: TraceAbstraction took 956.13 ms. Allocated memory is still 203.4 MB. Free memory was 151.9 MB in the beginning and 93.6 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:27,375 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.70 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 180.1 MB in the end (delta: -76.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.31 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 178.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.97 ms. Allocated memory is still 203.4 MB. Free memory was 178.2 MB in the beginning and 152.8 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 956.13 ms. Allocated memory is still 203.4 MB. Free memory was 151.9 MB in the beginning and 93.6 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 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 someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. 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: 0.8s, 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...