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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:43:30,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:43:30,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:43:30,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:43:30,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:43:30,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:43:30,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:43:30,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:43:30,642 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:43:30,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:43:30,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:43:30,643 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:43:30,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:43:30,644 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:43:30,644 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:43:30,645 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:43:30,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:43:30,645 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:43:30,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:43:30,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:43:30,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:43:30,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:43:30,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:43:30,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:43:30,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:43:30,649 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:43:30,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:43:30,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:43:30,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:43:30,650 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:43:30,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:43:30,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:43:30,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:43:30,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:43:30,651 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:43:30,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:43:30,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:43:30,652 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:43:30,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:43:30,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:43:30,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:43:30,727 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:43:30,727 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:43:30,728 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2019-09-10 01:43:30,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf9fefd1/cdde563d671b40d0824ef8d0bd1922a6/FLAGbbfe1ca4d [2019-09-10 01:43:31,216 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:43:31,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2019-09-10 01:43:31,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf9fefd1/cdde563d671b40d0824ef8d0bd1922a6/FLAGbbfe1ca4d [2019-09-10 01:43:31,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf9fefd1/cdde563d671b40d0824ef8d0bd1922a6 [2019-09-10 01:43:31,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:43:31,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:43:31,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:43:31,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:43:31,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:43:31,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:43:31" (1/1) ... [2019-09-10 01:43:31,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73803bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31, skipping insertion in model container [2019-09-10 01:43:31,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:43:31" (1/1) ... [2019-09-10 01:43:31,613 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:43:31,633 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:43:31,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:43:31,824 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:43:31,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:43:31,974 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:43:31,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31 WrapperNode [2019-09-10 01:43:31,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:43:31,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:43:31,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:43:31,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:43:31,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31" (1/1) ... [2019-09-10 01:43:31,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31" (1/1) ... [2019-09-10 01:43:31,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31" (1/1) ... [2019-09-10 01:43:31,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31" (1/1) ... [2019-09-10 01:43:32,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31" (1/1) ... [2019-09-10 01:43:32,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31" (1/1) ... [2019-09-10 01:43:32,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31" (1/1) ... [2019-09-10 01:43:32,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:43:32,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:43:32,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:43:32,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:43:32,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31" (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 [2019-09-10 01:43:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:43:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:43:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2019-09-10 01:43:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2019-09-10 01:43:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:43:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:43:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2019-09-10 01:43:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2019-09-10 01:43:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:43:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:43:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:43:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:43:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:43:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:43:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:43:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:43:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:43:32,428 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:43:32,429 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-10 01:43:32,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:43:32 BoogieIcfgContainer [2019-09-10 01:43:32,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:43:32,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:43:32,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:43:32,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:43:32,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:43:31" (1/3) ... [2019-09-10 01:43:32,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497eee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:43:32, skipping insertion in model container [2019-09-10 01:43:32,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:31" (2/3) ... [2019-09-10 01:43:32,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497eee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:43:32, skipping insertion in model container [2019-09-10 01:43:32,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:43:32" (3/3) ... [2019-09-10 01:43:32,441 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2019-09-10 01:43:32,451 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:43:32,460 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:43:32,479 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:43:32,509 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:43:32,509 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:43:32,509 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:43:32,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:43:32,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:43:32,510 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:43:32,510 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:43:32,510 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:43:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-09-10 01:43:32,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:43:32,541 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:32,542 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:32,544 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:32,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:32,550 INFO L82 PathProgramCache]: Analyzing trace with hash -982046229, now seen corresponding path program 1 times [2019-09-10 01:43:32,551 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:32,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:32,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:32,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:32,596 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:43:32,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:32,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:43:32,872 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:32,877 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:43:32,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:43:32,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:43:32,896 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2019-09-10 01:43:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:33,059 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2019-09-10 01:43:33,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 01:43:33,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-09-10 01:43:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:33,076 INFO L225 Difference]: With dead ends: 46 [2019-09-10 01:43:33,076 INFO L226 Difference]: Without dead ends: 38 [2019-09-10 01:43:33,079 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:43:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-10 01:43:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-09-10 01:43:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-10 01:43:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2019-09-10 01:43:33,131 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 18 [2019-09-10 01:43:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:33,132 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2019-09-10 01:43:33,133 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:43:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2019-09-10 01:43:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:43:33,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:33,136 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:33,137 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:33,137 INFO L82 PathProgramCache]: Analyzing trace with hash 433786594, now seen corresponding path program 1 times [2019-09-10 01:43:33,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:33,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:33,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:33,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:33,140 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:43:33,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:33,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:43:33,330 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:33,332 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:43:33,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:43:33,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:43:33,333 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand 7 states. [2019-09-10 01:43:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:33,467 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-09-10 01:43:33,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:43:33,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-09-10 01:43:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:33,469 INFO L225 Difference]: With dead ends: 40 [2019-09-10 01:43:33,469 INFO L226 Difference]: Without dead ends: 35 [2019-09-10 01:43:33,471 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:43:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-10 01:43:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-09-10 01:43:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-10 01:43:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2019-09-10 01:43:33,477 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 18 [2019-09-10 01:43:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:33,478 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2019-09-10 01:43:33,478 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:43:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2019-09-10 01:43:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:43:33,479 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:33,479 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:33,480 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:33,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1574798190, now seen corresponding path program 1 times [2019-09-10 01:43:33,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:33,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:33,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:33,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:33,482 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:43:33,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:33,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:43:33,620 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:33,621 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:43:33,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:43:33,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:43:33,623 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand 6 states. [2019-09-10 01:43:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:33,772 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-09-10 01:43:33,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:43:33,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-09-10 01:43:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:33,774 INFO L225 Difference]: With dead ends: 39 [2019-09-10 01:43:33,775 INFO L226 Difference]: Without dead ends: 35 [2019-09-10 01:43:33,775 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:43:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-10 01:43:33,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-09-10 01:43:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-10 01:43:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2019-09-10 01:43:33,780 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2019-09-10 01:43:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:33,781 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-09-10 01:43:33,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:43:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2019-09-10 01:43:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-10 01:43:33,782 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:33,782 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:33,782 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash 49971604, now seen corresponding path program 1 times [2019-09-10 01:43:33,783 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:33,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:33,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:33,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:33,784 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:43:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:43:33,890 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:43:33,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:43:33 BoogieIcfgContainer [2019-09-10 01:43:33,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:43:33,922 INFO L168 Benchmark]: Toolchain (without parser) took 2325.16 ms. Allocated memory was 138.9 MB in the beginning and 222.8 MB in the end (delta: 83.9 MB). Free memory was 86.6 MB in the beginning and 178.6 MB in the end (delta: -91.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:43:33,923 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 106.2 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:43:33,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.20 ms. Allocated memory was 138.9 MB in the beginning and 197.7 MB in the end (delta: 58.7 MB). Free memory was 86.4 MB in the beginning and 174.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:33,925 INFO L168 Benchmark]: Boogie Preprocessor took 39.43 ms. Allocated memory is still 197.7 MB. Free memory was 174.6 MB in the beginning and 172.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:33,927 INFO L168 Benchmark]: RCFGBuilder took 416.49 ms. Allocated memory is still 197.7 MB. Free memory was 172.2 MB in the beginning and 151.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:33,929 INFO L168 Benchmark]: TraceAbstraction took 1488.02 ms. Allocated memory was 197.7 MB in the beginning and 222.8 MB in the end (delta: 25.2 MB). Free memory was 151.1 MB in the beginning and 178.6 MB in the end (delta: -27.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:43:33,939 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 106.2 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.20 ms. Allocated memory was 138.9 MB in the beginning and 197.7 MB in the end (delta: 58.7 MB). Free memory was 86.4 MB in the beginning and 174.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.43 ms. Allocated memory is still 197.7 MB. Free memory was 174.6 MB in the beginning and 172.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.49 ms. Allocated memory is still 197.7 MB. Free memory was 172.2 MB in the beginning and 151.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1488.02 ms. Allocated memory was 197.7 MB in the beginning and 222.8 MB in the end (delta: 25.2 MB). Free memory was 151.1 MB in the beginning and 178.6 MB in the end (delta: -27.5 MB). There was no memory consumed. 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 bitwiseAnd at line 28. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=8589934594, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] double x = 0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L92] CALL, EXPR ceil_double(x) VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-4, i1=-2, x=0] [L29] COND TRUE j0 < 20 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-4, i1=-2, j0=-1, x=0] [L30] COND TRUE j0 < 0 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-4, i1=-2, j0=-1, x=0] [L31] COND TRUE huge_ceil + x > 0.0 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-4, i1=-2, j0=-1, x=0] [L32] COND TRUE i0 < 0 [L33] i0 = 0x80000000 [L34] i1 = 0 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=0, j0=-1, x=0] [L75] ieee_double_shape_type iw_u; [L76] iw_u.parts.msw = (i0) [L77] iw_u.parts.lsw = (i1) [L78] EXPR iw_u.value [L78] (x) = iw_u.value [L80] return x; VAL [\old(x)=0, \result=8589934590, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=0, j0=-1, x=8589934590] [L92] RET, EXPR ceil_double(x) VAL [ceil_double(x)=8589934590, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L92] double res = ceil_double(x); [L95] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=8589934590, x=0] [L96] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=8589934590, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. UNSAFE Result, 1.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 115 SDtfs, 138 SDslu, 348 SDs, 0 SdLazy, 151 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 3735 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...