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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:48,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:48,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:48,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:23:48,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:48,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:48,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:48,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:48,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:48,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:48,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:48,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:48,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:48,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:48,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:48,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:48,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:23:48,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:48,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:48,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:48,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 01:23:48,510 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:48,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:48,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:48,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:48,513 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:48,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:48,513 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:48,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:48,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:48,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:48,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:48,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:48,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:48,516 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:48,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:48,516 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:48,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:48,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:48,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:48,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:48,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:48,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:48,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:48,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:48,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:48,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:48,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:48,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:48,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:48,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:48,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:48,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:48,585 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:48,585 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:48,586 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop2-1.c [2019-09-08 01:23:48,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ce8e2b2/c4e5fde3d54842ee9693f925049012c0/FLAG99e0f1b2a [2019-09-08 01:23:49,080 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:49,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop2-1.c [2019-09-08 01:23:49,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ce8e2b2/c4e5fde3d54842ee9693f925049012c0/FLAG99e0f1b2a [2019-09-08 01:23:49,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ce8e2b2/c4e5fde3d54842ee9693f925049012c0 [2019-09-08 01:23:49,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:49,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:49,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:49,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:49,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:49,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:49" (1/1) ... [2019-09-08 01:23:49,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfd9e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49, skipping insertion in model container [2019-09-08 01:23:49,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:49" (1/1) ... [2019-09-08 01:23:49,529 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:49,547 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:49,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:49,751 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:49,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:49,781 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:49,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49 WrapperNode [2019-09-08 01:23:49,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:49,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:49,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:49,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:49,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49" (1/1) ... [2019-09-08 01:23:49,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49" (1/1) ... [2019-09-08 01:23:49,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49" (1/1) ... [2019-09-08 01:23:49,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49" (1/1) ... [2019-09-08 01:23:49,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49" (1/1) ... [2019-09-08 01:23:49,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49" (1/1) ... [2019-09-08 01:23:49,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49" (1/1) ... [2019-09-08 01:23:49,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:49,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:49,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:49,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:49,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49" (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 [2019-09-08 01:23:49,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:49,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:49,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 01:23:49,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 01:23:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 01:23:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:23:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 01:23:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:50,136 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:50,137 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 01:23:50,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:50 BoogieIcfgContainer [2019-09-08 01:23:50,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:50,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:50,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:50,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:50,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:49" (1/3) ... [2019-09-08 01:23:50,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d459c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:50, skipping insertion in model container [2019-09-08 01:23:50,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:49" (2/3) ... [2019-09-08 01:23:50,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d459c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:50, skipping insertion in model container [2019-09-08 01:23:50,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:50" (3/3) ... [2019-09-08 01:23:50,145 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-09-08 01:23:50,155 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:50,163 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:50,193 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:50,251 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:50,252 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:50,253 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:50,253 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:50,253 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:50,253 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:50,254 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:50,254 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:50,254 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-08 01:23:50,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-08 01:23:50,283 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:50,283 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:50,287 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:50,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:50,293 INFO L82 PathProgramCache]: Analyzing trace with hash 23164375, now seen corresponding path program 1 times [2019-09-08 01:23:50,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:50,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:50,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:50,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:50,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:50,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:50,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:50,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:50,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:50,451 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-08 01:23:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:50,470 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-09-08 01:23:50,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:50,471 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-08 01:23:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:50,478 INFO L225 Difference]: With dead ends: 34 [2019-09-08 01:23:50,478 INFO L226 Difference]: Without dead ends: 15 [2019-09-08 01:23:50,481 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-08 01:23:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-08 01:23:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-08 01:23:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-08 01:23:50,514 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-09-08 01:23:50,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:50,514 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-08 01:23:50,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-08 01:23:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 01:23:50,515 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:50,516 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:50,516 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:50,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:50,517 INFO L82 PathProgramCache]: Analyzing trace with hash -2126491567, now seen corresponding path program 1 times [2019-09-08 01:23:50,517 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:50,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:50,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:50,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:50,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:50,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:50,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 01:23:50,630 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 01:23:50,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 01:23:50,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:23:50,631 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2019-09-08 01:23:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:50,658 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-09-08 01:23:50,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 01:23:50,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-08 01:23:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:50,660 INFO L225 Difference]: With dead ends: 27 [2019-09-08 01:23:50,660 INFO L226 Difference]: Without dead ends: 18 [2019-09-08 01:23:50,661 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:23:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-08 01:23:50,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-09-08 01:23:50,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-08 01:23:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-09-08 01:23:50,667 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-09-08 01:23:50,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:50,667 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-09-08 01:23:50,668 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 01:23:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-09-08 01:23:50,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 01:23:50,668 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:50,669 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:50,669 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:50,669 INFO L82 PathProgramCache]: Analyzing trace with hash -351484205, now seen corresponding path program 1 times [2019-09-08 01:23:50,669 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:50,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:50,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:50,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:50,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:50,730 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:50,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:50 BoogieIcfgContainer [2019-09-08 01:23:50,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:50,759 INFO L168 Benchmark]: Toolchain (without parser) took 1244.05 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 90.9 MB in the beginning and 135.2 MB in the end (delta: -44.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:50,761 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.1 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:50,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.27 ms. Allocated memory is still 143.1 MB. Free memory was 90.7 MB in the beginning and 80.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:50,763 INFO L168 Benchmark]: Boogie Preprocessor took 123.11 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 80.8 MB in the beginning and 178.0 MB in the end (delta: -97.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:50,763 INFO L168 Benchmark]: RCFGBuilder took 232.38 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 165.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:50,764 INFO L168 Benchmark]: TraceAbstraction took 617.44 ms. Allocated memory is still 200.8 MB. Free memory was 165.4 MB in the beginning and 135.2 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:50,768 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 143.1 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.27 ms. Allocated memory is still 143.1 MB. Free memory was 90.7 MB in the beginning and 80.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.11 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 80.8 MB in the beginning and 178.0 MB in the end (delta: -97.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 232.38 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 165.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 617.44 ms. Allocated memory is still 200.8 MB. Free memory was 165.4 MB in the beginning and 135.2 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L9] float pi = 3.14159 ; VAL [\old(pi)=1, pi=314159/100000] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [count=2, evenExp=1, multFactor=0, oddExp=2, pi=314159/100000, term=2, x=2] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [count=2, evenExp=1, multFactor=0, oddExp=2, pi=314159/100000, x=2] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [(count>>1 % 2 == 0) ? 1 : -1=-1, count=2, evenExp=1, multFactor=0, oddExp=2, pi=314159/100000, x=2] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [count=4, multFactor=-1, pi=314159/100000, temp=0, x=2] [L44] CALL __VERIFIER_assert( oddExp >= evenExp ) VAL [\old(cond)=0, pi=314159/100000] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=314159/100000] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0, pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 1 SDslu, 12 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...