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_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:43:28,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:43:28,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:43:28,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:43:28,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:43:28,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:43:28,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:43:28,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:43:28,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:43:28,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:43:28,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:43:28,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:43:28,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:43:28,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:43:28,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:43:28,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:43:28,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:43:28,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:43:28,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:43:28,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:43:28,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:43:28,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:43:28,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:43:28,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:43:28,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:43:28,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:43:28,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:43:28,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:43:28,400 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 01:43:28,418 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:43:28,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:43:28,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:43:28,418 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:43:28,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:43:28,419 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:43:28,420 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:43:28,420 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:43:28,420 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:43:28,422 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:43:28,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:43:28,423 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:43:28,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:43:28,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:43:28,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:43:28,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:43:28,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:43:28,425 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:43:28,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:43:28,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:43:28,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:43:28,427 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:43:28,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:43:28,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:43:28,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:43:28,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:43:28,428 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:43:28,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:43:28,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:43:28,428 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:43:28,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:43:28,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:43:28,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:43:28,496 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:43:28,497 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:43:28,498 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2019-09-10 01:43:28,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ba27094/30f68f31675345859e3dac120dac1c52/FLAGe09e3e93f [2019-09-10 01:43:29,018 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:43:29,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2019-09-10 01:43:29,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ba27094/30f68f31675345859e3dac120dac1c52/FLAGe09e3e93f [2019-09-10 01:43:29,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ba27094/30f68f31675345859e3dac120dac1c52 [2019-09-10 01:43:29,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:43:29,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:43:29,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:43:29,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:43:29,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:43:29,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:43:29" (1/1) ... [2019-09-10 01:43:29,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d455d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29, skipping insertion in model container [2019-09-10 01:43:29,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:43:29" (1/1) ... [2019-09-10 01:43:29,423 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:43:29,443 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:43:29,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:43:29,760 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:43:29,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:43:29,815 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:43:29,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29 WrapperNode [2019-09-10 01:43:29,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:43:29,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:43:29,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:43:29,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:43:29,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29" (1/1) ... [2019-09-10 01:43:29,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29" (1/1) ... [2019-09-10 01:43:29,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29" (1/1) ... [2019-09-10 01:43:29,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29" (1/1) ... [2019-09-10 01:43:29,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29" (1/1) ... [2019-09-10 01:43:29,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29" (1/1) ... [2019-09-10 01:43:29,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29" (1/1) ... [2019-09-10 01:43:29,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:43:29,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:43:29,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:43:29,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:43:29,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29" (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 01:43:29,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:43:29,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:43:29,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2019-09-10 01:43:29,927 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2019-09-10 01:43:29,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2019-09-10 01:43:29,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:43:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:43:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2019-09-10 01:43:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2019-09-10 01:43:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:43:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:43:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:43:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:43:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:43:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:43:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2019-09-10 01:43:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:43:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:43:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:43:30,392 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:43:30,392 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-10 01:43:30,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:43:30 BoogieIcfgContainer [2019-09-10 01:43:30,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:43:30,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:43:30,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:43:30,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:43:30,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:43:29" (1/3) ... [2019-09-10 01:43:30,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62129d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:43:30, skipping insertion in model container [2019-09-10 01:43:30,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:29" (2/3) ... [2019-09-10 01:43:30,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62129d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:43:30, skipping insertion in model container [2019-09-10 01:43:30,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:43:30" (3/3) ... [2019-09-10 01:43:30,402 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072c.c [2019-09-10 01:43:30,411 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:43:30,420 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:43:30,437 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:43:30,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:43:30,465 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:43:30,465 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:43:30,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:43:30,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:43:30,466 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:43:30,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:43:30,466 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:43:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-09-10 01:43:30,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:43:30,493 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:30,494 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:30,496 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:30,501 INFO L82 PathProgramCache]: Analyzing trace with hash -554068093, now seen corresponding path program 1 times [2019-09-10 01:43:30,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:30,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:30,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:30,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:30,547 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:30,807 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 01:43:30,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:30,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:43:30,811 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:30,817 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:43:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:43:30,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:43:30,841 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 7 states. [2019-09-10 01:43:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:31,041 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2019-09-10 01:43:31,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:43:31,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-09-10 01:43:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:31,056 INFO L225 Difference]: With dead ends: 45 [2019-09-10 01:43:31,057 INFO L226 Difference]: Without dead ends: 41 [2019-09-10 01:43:31,060 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 01:43:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-10 01:43:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-09-10 01:43:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-10 01:43:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-09-10 01:43:31,115 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 19 [2019-09-10 01:43:31,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:31,115 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-09-10 01:43:31,116 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:43:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-09-10 01:43:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:43:31,117 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:31,117 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 01:43:31,118 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash 578102191, now seen corresponding path program 1 times [2019-09-10 01:43:31,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:31,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:31,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:31,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:31,121 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:31,291 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 01:43:31,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:31,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:43:31,292 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:31,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:43:31,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:43:31,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:43:31,294 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2019-09-10 01:43:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:31,428 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-09-10 01:43:31,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:43:31,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-09-10 01:43:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:31,430 INFO L225 Difference]: With dead ends: 43 [2019-09-10 01:43:31,430 INFO L226 Difference]: Without dead ends: 43 [2019-09-10 01:43:31,431 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:43:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-10 01:43:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-09-10 01:43:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-10 01:43:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-09-10 01:43:31,444 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 20 [2019-09-10 01:43:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:31,445 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-09-10 01:43:31,445 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:43:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-09-10 01:43:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:43:31,448 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:31,449 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 01:43:31,449 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:31,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:31,450 INFO L82 PathProgramCache]: Analyzing trace with hash 332788532, now seen corresponding path program 1 times [2019-09-10 01:43:31,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:31,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:31,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:31,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:31,453 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:43:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:43:31,595 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:43:31,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:43:31 BoogieIcfgContainer [2019-09-10 01:43:31,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:43:31,631 INFO L168 Benchmark]: Toolchain (without parser) took 2223.83 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 87.4 MB in the beginning and 80.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:31,632 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:43:31,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.80 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 87.2 MB in the beginning and 174.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:31,634 INFO L168 Benchmark]: Boogie Preprocessor took 57.82 ms. Allocated memory is still 199.8 MB. Free memory was 174.7 MB in the beginning and 172.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:31,635 INFO L168 Benchmark]: RCFGBuilder took 519.51 ms. Allocated memory is still 199.8 MB. Free memory was 172.2 MB in the beginning and 149.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:31,636 INFO L168 Benchmark]: TraceAbstraction took 1233.15 ms. Allocated memory is still 199.8 MB. Free memory was 149.3 MB in the beginning and 80.3 MB in the end (delta: 69.0 MB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:31,640 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 132.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 408.80 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 87.2 MB in the beginning and 174.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.82 ms. Allocated memory is still 199.8 MB. Free memory was 174.7 MB in the beginning and 172.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 519.51 ms. Allocated memory is still 199.8 MB. Free memory was 172.2 MB in the beginning and 149.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1233.15 ms. Allocated memory is still 199.8 MB. Free memory was 149.3 MB in the beginning and 80.3 MB in the end (delta: 69.0 MB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 55. Possible FailurePath: [L81] double x = -0.0; VAL [x=0] [L82] CALL, EXPR trunc_double(x) VAL [\old(x)=0] [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; VAL [\old(x)=0, x=0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=0, exponent_less_1023=20, lsw=10, msw=0, signbit=-1, x=0] [L30] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=0, exponent_less_1023=20, lsw=10, msw=0, signbit=-1, x=0] [L47] COND FALSE !(exponent_less_1023 > 51) VAL [\old(x)=0, exponent_less_1023=20, lsw=10, msw=0, signbit=-1, x=0] [L53] ieee_double_shape_type iw_u; [L54] iw_u.parts.msw = (msw) [L55] iw_u.parts.lsw = (lsw & ~(0xffffffffu >> (exponent_less_1023 - 20))) [L56] EXPR iw_u.value [L56] (x) = iw_u.value [L59] return x; VAL [\old(x)=0, \result=1/2, exponent_less_1023=20, lsw=10, msw=0, signbit=-1, x=1/2] [L82] RET, EXPR trunc_double(x) VAL [trunc_double(x)=1/2, x=0] [L82] double res = trunc_double(x); [L85] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=1/2, res == -0.0 && __signbit_double(res) == 1=0, x=0] [L85] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L86] __VERIFIER_error() VAL [res=1/2, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 32 SDslu, 301 SDs, 0 SdLazy, 82 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2941 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...