/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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:10:36,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:10:36,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:10:36,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:10:36,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:10:36,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:10:36,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:10:36,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:10:36,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:10:36,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:10:36,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:10:36,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:10:36,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:10:36,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:10:36,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:10:36,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:10:36,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:10:36,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:10:36,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:10:36,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:10:36,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:10:36,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:10:36,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:10:36,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:10:36,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:10:36,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:10:36,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:10:36,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:10:36,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:10:36,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:10:36,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:10:36,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:10:36,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:10:36,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:10:36,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:10:36,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:10:36,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:10:36,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:10:36,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:10:36,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:10:36,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:10:36,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:10:36,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:10:36,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:10:36,945 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:10:36,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:10:36,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:10:36,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:36,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:10:36,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:10:36,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:10:36,947 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:10:37,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:10:37,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:10:37,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:10:37,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:10:37,413 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:10:37,414 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-04 16:10:37,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/831b9f9bf/0633b5c65c6e438ea63eb20ecc8d2795/FLAGadba4fdce [2020-09-04 16:10:38,070 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:10:38,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-04 16:10:38,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/831b9f9bf/0633b5c65c6e438ea63eb20ecc8d2795/FLAGadba4fdce [2020-09-04 16:10:38,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/831b9f9bf/0633b5c65c6e438ea63eb20ecc8d2795 [2020-09-04 16:10:38,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:10:38,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:10:38,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:38,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:10:38,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:10:38,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:38" (1/1) ... [2020-09-04 16:10:38,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd22e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38, skipping insertion in model container [2020-09-04 16:10:38,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:38" (1/1) ... [2020-09-04 16:10:38,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:10:38,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:10:38,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:38,676 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:10:38,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:38,737 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:10:38,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38 WrapperNode [2020-09-04 16:10:38,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:38,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:10:38,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:10:38,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:10:38,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38" (1/1) ... [2020-09-04 16:10:38,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38" (1/1) ... [2020-09-04 16:10:38,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38" (1/1) ... [2020-09-04 16:10:38,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38" (1/1) ... [2020-09-04 16:10:38,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38" (1/1) ... [2020-09-04 16:10:38,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38" (1/1) ... [2020-09-04 16:10:38,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38" (1/1) ... [2020-09-04 16:10:38,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:10:38,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:10:38,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:10:38,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:10:38,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:10:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:10:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:10:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-04 16:10:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-04 16:10:38,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:10:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:10:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-04 16:10:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:10:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:10:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:10:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:10:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:10:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:10:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-04 16:10:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:10:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:10:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:10:39,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:10:39,494 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 16:10:39,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:39 BoogieIcfgContainer [2020-09-04 16:10:39,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:10:39,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:10:39,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:10:39,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:10:39,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:10:38" (1/3) ... [2020-09-04 16:10:39,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b740d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:39, skipping insertion in model container [2020-09-04 16:10:39,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:38" (2/3) ... [2020-09-04 16:10:39,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b740d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:39, skipping insertion in model container [2020-09-04 16:10:39,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:39" (3/3) ... [2020-09-04 16:10:39,510 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-09-04 16:10:39,521 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:10:39,530 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:10:39,548 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:10:39,573 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:10:39,573 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:10:39,573 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:10:39,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:10:39,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:10:39,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:10:39,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:10:39,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:10:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-09-04 16:10:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-04 16:10:39,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:39,608 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] [2020-09-04 16:10:39,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:39,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1852514461, now seen corresponding path program 1 times [2020-09-04 16:10:39,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:39,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376452197] [2020-09-04 16:10:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:39,691 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:10:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 16:10:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:10:39,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376452197] [2020-09-04 16:10:39,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:10:39,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:10:39,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994468133] [2020-09-04 16:10:39,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:10:39,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:10:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:10:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:10:39,904 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 4 states. [2020-09-04 16:10:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:10:40,275 INFO L93 Difference]: Finished difference Result 213 states and 258 transitions. [2020-09-04 16:10:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:10:40,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-04 16:10:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:10:40,292 INFO L225 Difference]: With dead ends: 213 [2020-09-04 16:10:40,292 INFO L226 Difference]: Without dead ends: 107 [2020-09-04 16:10:40,298 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 [2020-09-04 16:10:40,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-04 16:10:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-04 16:10:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-04 16:10:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-09-04 16:10:40,360 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 32 [2020-09-04 16:10:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:10:40,361 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-09-04 16:10:40,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:10:40,361 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-09-04 16:10:40,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-04 16:10:40,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:40,364 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, 1, 1, 1, 1] [2020-09-04 16:10:40,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:10:40,365 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:40,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1065550425, now seen corresponding path program 1 times [2020-09-04 16:10:40,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:40,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130982862] [2020-09-04 16:10:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:40,384 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:40,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:40,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:40,520 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:10:40,520 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:10:40,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:10:40,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:10:40 BoogieIcfgContainer [2020-09-04 16:10:40,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:10:40,548 INFO L168 Benchmark]: Toolchain (without parser) took 2155.82 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 102.7 MB in the beginning and 199.0 MB in the end (delta: -96.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:40,549 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:40,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.97 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 90.7 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:40,551 INFO L168 Benchmark]: Boogie Preprocessor took 138.07 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 90.7 MB in the beginning and 179.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:40,552 INFO L168 Benchmark]: RCFGBuilder took 623.57 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 151.2 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:40,553 INFO L168 Benchmark]: TraceAbstraction took 1042.60 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 150.5 MB in the beginning and 199.0 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:40,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.97 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 90.7 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.07 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 90.7 MB in the beginning and 179.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 623.57 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 151.2 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1042.60 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 150.5 MB in the beginning and 199.0 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND FALSE !(j0 < 20) [L47] COND TRUE j0 > 51 [L48] COND TRUE j0 == 0x400 [L49] return x + x; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 19 SDslu, 97 SDs, 0 SdLazy, 137 SolverSat, 6 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=115occurred 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...