/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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:10:43,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:10:43,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:10:43,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:10:43,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:10:43,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:10:43,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:10:43,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:10:43,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:10:43,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:10:43,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:10:43,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:10:43,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:10:43,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:10:43,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:10:43,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:10:43,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:10:43,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:10:43,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:10:43,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:10:43,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:10:43,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:10:43,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:10:43,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:10:43,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:10:43,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:10:43,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:10:43,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:10:43,721 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 16:10:43,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:10:43,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:10:43,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:10:43,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:10:43,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:10:43,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:10:43,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:10:43,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:10:43,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:10:43,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:10:43,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:10:43,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:10:43,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:10:43,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:10:43,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:10:43,762 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:10:43,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:10:43,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:10:43,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:43,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:10:43,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:10:43,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:10:43,763 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:10:44,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:10:44,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:10:44,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:10:44,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:10:44,254 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:10:44,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-09-04 16:10:44,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed4512db8/78c6663bebc94b9b83b0e4314ca5bb6b/FLAG629d9899c [2020-09-04 16:10:44,921 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:10:44,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-09-04 16:10:44,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed4512db8/78c6663bebc94b9b83b0e4314ca5bb6b/FLAG629d9899c [2020-09-04 16:10:45,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed4512db8/78c6663bebc94b9b83b0e4314ca5bb6b [2020-09-04 16:10:45,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:10:45,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:10:45,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:45,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:10:45,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:10:45,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:45" (1/1) ... [2020-09-04 16:10:45,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1592531a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45, skipping insertion in model container [2020-09-04 16:10:45,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:45" (1/1) ... [2020-09-04 16:10:45,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:10:45,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:10:45,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:45,555 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:10:45,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:45,626 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:10:45,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45 WrapperNode [2020-09-04 16:10:45,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:45,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:10:45,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:10:45,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:10:45,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45" (1/1) ... [2020-09-04 16:10:45,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45" (1/1) ... [2020-09-04 16:10:45,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45" (1/1) ... [2020-09-04 16:10:45,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45" (1/1) ... [2020-09-04 16:10:45,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45" (1/1) ... [2020-09-04 16:10:45,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45" (1/1) ... [2020-09-04 16:10:45,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45" (1/1) ... [2020-09-04 16:10:45,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:10:45,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:10:45,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:10:45,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:10:45,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45" (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 16:10:45,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:10:45,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:10:45,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-04 16:10:45,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-09-04 16:10:45,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:10:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:10:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-04 16:10:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-09-04 16:10:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:10:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:10:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:10:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:10:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:10:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:10:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:10:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:10:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:10:46,392 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:10:46,393 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 16:10:46,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:46 BoogieIcfgContainer [2020-09-04 16:10:46,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:10:46,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:10:46,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:10:46,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:10:46,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:10:45" (1/3) ... [2020-09-04 16:10:46,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bae167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:46, skipping insertion in model container [2020-09-04 16:10:46,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:45" (2/3) ... [2020-09-04 16:10:46,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bae167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:46, skipping insertion in model container [2020-09-04 16:10:46,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:46" (3/3) ... [2020-09-04 16:10:46,418 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-09-04 16:10:46,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:10:46,442 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:10:46,465 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:10:46,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:10:46,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:10:46,494 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:10:46,494 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:10:46,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:10:46,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:10:46,494 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:10:46,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:10:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-09-04 16:10:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 16:10:46,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:46,529 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] [2020-09-04 16:10:46,529 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:46,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:46,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1638978420, now seen corresponding path program 1 times [2020-09-04 16:10:46,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:46,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884396139] [2020-09-04 16:10:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:46,615 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:10:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:46,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 16:10:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 16:10:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:46,815 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 16:10:46,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884396139] [2020-09-04 16:10:46,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:10:46,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:10:46,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12515382] [2020-09-04 16:10:46,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:10:46,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:10:46,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:10:46,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:10:46,854 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 4 states. [2020-09-04 16:10:47,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:10:47,199 INFO L93 Difference]: Finished difference Result 181 states and 219 transitions. [2020-09-04 16:10:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:10:47,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-04 16:10:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:10:47,219 INFO L225 Difference]: With dead ends: 181 [2020-09-04 16:10:47,219 INFO L226 Difference]: Without dead ends: 92 [2020-09-04 16:10:47,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 16:10:47,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-04 16:10:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-04 16:10:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-04 16:10:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2020-09-04 16:10:47,292 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 35 [2020-09-04 16:10:47,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:10:47,293 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2020-09-04 16:10:47,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:10:47,293 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2020-09-04 16:10:47,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-04 16:10:47,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:47,296 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, 1, 1, 1] [2020-09-04 16:10:47,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:10:47,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2095488066, now seen corresponding path program 1 times [2020-09-04 16:10:47,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:47,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122745286] [2020-09-04 16:10:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:47,301 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:47,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:47,446 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:47,483 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:10:47,483 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:10:47,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:10:47,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:10:47 BoogieIcfgContainer [2020-09-04 16:10:47,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:10:47,510 INFO L168 Benchmark]: Toolchain (without parser) took 2247.06 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 90.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 76.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:47,511 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:47,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.15 ms. Allocated memory is still 138.4 MB. Free memory was 102.2 MB in the beginning and 90.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:47,513 INFO L168 Benchmark]: Boogie Preprocessor took 149.60 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 90.6 MB in the beginning and 179.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:47,514 INFO L168 Benchmark]: RCFGBuilder took 625.38 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 152.9 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:47,515 INFO L168 Benchmark]: TraceAbstraction took 1100.22 ms. Allocated memory is still 202.4 MB. Free memory was 152.9 MB in the beginning and 90.1 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:47,519 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.15 ms. Allocated memory is still 138.4 MB. Free memory was 102.2 MB in the beginning and 90.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.60 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 90.6 MB in the beginning and 179.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 625.38 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 152.9 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1100.22 ms. Allocated memory is still 202.4 MB. Free memory was 152.9 MB in the beginning and 90.1 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] 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; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 21 SDslu, 82 SDs, 0 SdLazy, 115 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred 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...