/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:55:03,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:55:03,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:55:03,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:55:03,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:55:03,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:55:03,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:55:03,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:55:03,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:55:03,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:55:03,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:55:03,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:55:03,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:55:03,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:55:03,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:55:03,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:55:03,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:55:03,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:55:03,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:55:03,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:55:03,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:55:03,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:55:03,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:55:03,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:55:03,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 10:55:03,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:55:03,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:55:03,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:55:03,594 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 [2020-07-07 10:55:03,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:55:03,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:55:03,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:55:03,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:55:03,636 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:55:03,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:55:03,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:55:03,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:55:03,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:55:03,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:55:03,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:55:03,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:55:03,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:55:03,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:55:03,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:55:03,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:55:03,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:55:03,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:55:03,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:55:03,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:55:03,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:55:03,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:55:03,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:55:03,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:55:03,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:55:03,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:55:03,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:55:03,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:55:03,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:55:03,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:55:03,941 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:55:03,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:55:03,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:55:03,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:55:03,959 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:55:03,960 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-07-07 10:55:04,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22324c6f6/12cd8907758748389c522b17ffb819c6/FLAG5287ba6a1 [2020-07-07 10:55:04,512 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:55:04,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-07-07 10:55:04,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22324c6f6/12cd8907758748389c522b17ffb819c6/FLAG5287ba6a1 [2020-07-07 10:55:04,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22324c6f6/12cd8907758748389c522b17ffb819c6 [2020-07-07 10:55:04,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:55:04,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:55:04,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:04,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:55:04,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:55:04,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:04" (1/1) ... [2020-07-07 10:55:04,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bac4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:04, skipping insertion in model container [2020-07-07 10:55:04,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:04" (1/1) ... [2020-07-07 10:55:04,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:55:04,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:55:05,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:05,161 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:55:05,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:05,331 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:55:05,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05 WrapperNode [2020-07-07 10:55:05,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:05,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:55:05,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:55:05,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:55:05,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05" (1/1) ... [2020-07-07 10:55:05,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05" (1/1) ... [2020-07-07 10:55:05,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05" (1/1) ... [2020-07-07 10:55:05,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05" (1/1) ... [2020-07-07 10:55:05,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05" (1/1) ... [2020-07-07 10:55:05,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05" (1/1) ... [2020-07-07 10:55:05,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05" (1/1) ... [2020-07-07 10:55:05,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:55:05,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:55:05,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:55:05,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:55:05,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05" (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 [2020-07-07 10:55:05,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:55:05,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:55:05,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-07 10:55:05,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-07-07 10:55:05,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:55:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:55:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-07 10:55:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-07 10:55:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-07-07 10:55:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 10:55:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 10:55:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 10:55:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 10:55:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 10:55:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 10:55:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:55:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:55:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:55:05,953 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:55:05,954 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-07 10:55:05,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:05 BoogieIcfgContainer [2020-07-07 10:55:05,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:55:05,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:55:05,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:55:05,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:55:05,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:55:04" (1/3) ... [2020-07-07 10:55:05,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db77fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:05, skipping insertion in model container [2020-07-07 10:55:05,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:05" (2/3) ... [2020-07-07 10:55:05,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db77fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:05, skipping insertion in model container [2020-07-07 10:55:05,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:05" (3/3) ... [2020-07-07 10:55:05,968 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2020-07-07 10:55:05,978 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:55:05,984 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:55:05,997 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:55:06,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:55:06,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:55:06,021 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:55:06,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:55:06,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:55:06,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:55:06,022 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:55:06,022 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:55:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-07-07 10:55:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 10:55:06,047 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:06,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:55:06,048 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:06,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:06,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1131346129, now seen corresponding path program 1 times [2020-07-07 10:55:06,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:06,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494477323] [2020-07-07 10:55:06,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:55:06,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494477323] [2020-07-07 10:55:06,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:55:06,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 10:55:06,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008122745] [2020-07-07 10:55:06,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 10:55:06,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:55:06,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 10:55:06,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:55:06,343 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 4 states. [2020-07-07 10:55:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:55:06,658 INFO L93 Difference]: Finished difference Result 116 states and 172 transitions. [2020-07-07 10:55:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 10:55:06,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-07-07 10:55:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:55:06,672 INFO L225 Difference]: With dead ends: 116 [2020-07-07 10:55:06,672 INFO L226 Difference]: Without dead ends: 58 [2020-07-07 10:55:06,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 10:55:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-07 10:55:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-07-07 10:55:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-07 10:55:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2020-07-07 10:55:06,723 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 20 [2020-07-07 10:55:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:55:06,724 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2020-07-07 10:55:06,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 10:55:06,725 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2020-07-07 10:55:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 10:55:06,727 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:06,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:55:06,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:55:06,728 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:06,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2124284734, now seen corresponding path program 1 times [2020-07-07 10:55:06,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:06,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119113832] [2020-07-07 10:55:06,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:06,892 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 10:55:06,892 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 10:55:06,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:55:06,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 10:55:06 BoogieIcfgContainer [2020-07-07 10:55:06,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 10:55:06,940 INFO L168 Benchmark]: Toolchain (without parser) took 2064.22 ms. Allocated memory was 145.8 MB in the beginning and 235.4 MB in the end (delta: 89.7 MB). Free memory was 103.8 MB in the beginning and 204.9 MB in the end (delta: -101.1 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:06,941 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 10:55:06,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.28 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 103.6 MB in the beginning and 181.2 MB in the end (delta: -77.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:06,943 INFO L168 Benchmark]: Boogie Preprocessor took 69.47 ms. Allocated memory is still 205.0 MB. Free memory was 181.2 MB in the beginning and 179.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:06,944 INFO L168 Benchmark]: RCFGBuilder took 550.64 ms. Allocated memory is still 205.0 MB. Free memory was 179.2 MB in the beginning and 150.6 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:06,945 INFO L168 Benchmark]: TraceAbstraction took 977.80 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 149.9 MB in the beginning and 204.9 MB in the end (delta: -55.0 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:06,949 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 455.28 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 103.6 MB in the beginning and 181.2 MB in the end (delta: -77.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.47 ms. Allocated memory is still 205.0 MB. Free memory was 181.2 MB in the beginning and 179.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 550.64 ms. Allocated memory is still 205.0 MB. Free memory was 179.2 MB in the beginning and 150.6 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 977.80 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 149.9 MB in the beginning and 204.9 MB in the end (delta: -55.0 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 145]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [\old(one_sqrt)=4294967302, \old(tiny_sqrt)=4294967298, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L139] double x = 0.0 / 0.0; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L141] CALL, EXPR __ieee754_sqrt(x) VAL [\old(x)=4294967303, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; VAL [\old(x)=4294967303, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967303] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; VAL [\old(x)=4294967303, ix0=0, ix1=4294967300, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967303] [L141] RET, EXPR __ieee754_sqrt(x) VAL [__ieee754_sqrt(x)=4294967301, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967303] [L141] double res = __ieee754_sqrt(x); [L144] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967301, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L18] return x != x; VAL [\old(x)=4294967301, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967301] [L144] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, one_sqrt=1, res=4294967301, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967303] [L144] COND TRUE !isnan_double(res) [L145] __VERIFIER_error() VAL [one_sqrt=1, res=4294967301, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967303] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 72 SDslu, 5 SDs, 0 SdLazy, 78 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...