/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/float_req_bl_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:55:47,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:55:47,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:55:47,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:55:47,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:55:47,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:55:47,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:55:47,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:55:47,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:55:47,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:55:47,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:55:47,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:55:47,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:55:47,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:55:47,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:55:47,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:55:47,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:55:47,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:55:47,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:55:47,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:55:47,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:55:47,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:55:47,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:55:47,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:55:47,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 10:55:47,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:55:47,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:55:47,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:55:47,687 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 10:55:47,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:55:47,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:55:47,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:55:47,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:55:47,716 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:55:47,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:55:47,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:55:47,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:55:47,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:55:47,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:55:47,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:55:47,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:55:47,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:55:47,719 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:55:47,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:55:47,720 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:55:47,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:55:47,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:55:47,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:55:47,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:55:47,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:55:47,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:55:47,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:55:47,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:55:47,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:55:47,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:55:47,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:55:47,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:55:47,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:55:47,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:55:47,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:55:47,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:55:47,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:55:47,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:55:47,998 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:55:47,999 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2020-07-07 10:55:48,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da4f80bc/f73dadf590264b1b9115dd8455fe804b/FLAGb380febc2 [2020-07-07 10:55:48,492 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:55:48,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2020-07-07 10:55:48,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da4f80bc/f73dadf590264b1b9115dd8455fe804b/FLAGb380febc2 [2020-07-07 10:55:48,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da4f80bc/f73dadf590264b1b9115dd8455fe804b [2020-07-07 10:55:48,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:55:48,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:55:48,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:48,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:55:48,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:55:48,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:48" (1/1) ... [2020-07-07 10:55:48,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a9796e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:48, skipping insertion in model container [2020-07-07 10:55:48,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:48" (1/1) ... [2020-07-07 10:55:48,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:55:48,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:55:49,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:49,196 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:55:49,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:49,365 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:55:49,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49 WrapperNode [2020-07-07 10:55:49,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:49,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:55:49,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:55:49,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:55:49,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49" (1/1) ... [2020-07-07 10:55:49,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49" (1/1) ... [2020-07-07 10:55:49,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49" (1/1) ... [2020-07-07 10:55:49,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49" (1/1) ... [2020-07-07 10:55:49,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49" (1/1) ... [2020-07-07 10:55:49,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49" (1/1) ... [2020-07-07 10:55:49,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49" (1/1) ... [2020-07-07 10:55:49,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:55:49,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:55:49,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:55:49,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:55:49,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49" (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 [2020-07-07 10:55:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:55:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:55:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-07-07 10:55:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-07 10:55:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:55:49,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:55:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-07-07 10:55:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 10:55:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 10:55:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 10:55:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 10:55:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 10:55:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 10:55:49,484 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-07 10:55:49,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:55:49,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:55:49,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:55:49,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:55:49,799 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-07 10:55:49,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:49 BoogieIcfgContainer [2020-07-07 10:55:49,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:55:49,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:55:49,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:55:49,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:55:49,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:55:48" (1/3) ... [2020-07-07 10:55:49,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d309c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:49, skipping insertion in model container [2020-07-07 10:55:49,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:49" (2/3) ... [2020-07-07 10:55:49,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d309c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:49, skipping insertion in model container [2020-07-07 10:55:49,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:49" (3/3) ... [2020-07-07 10:55:49,812 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d.c [2020-07-07 10:55:49,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:55:49,829 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:55:49,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:55:49,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:55:49,868 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:55:49,869 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:55:49,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:55:49,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:55:49,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:55:49,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:55:49,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:55:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-07-07 10:55:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 10:55:49,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:49,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:55:49,898 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:49,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:49,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2053199230, now seen corresponding path program 1 times [2020-07-07 10:55:49,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:49,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545822288] [2020-07-07 10:55:49,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:50,123 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 10:55:50,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545822288] [2020-07-07 10:55:50,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:55:50,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 10:55:50,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990008499] [2020-07-07 10:55:50,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 10:55:50,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:55:50,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 10:55:50,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:55:50,146 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-07-07 10:55:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:55:50,349 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2020-07-07 10:55:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 10:55:50,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-07-07 10:55:50,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:55:50,361 INFO L225 Difference]: With dead ends: 78 [2020-07-07 10:55:50,362 INFO L226 Difference]: Without dead ends: 39 [2020-07-07 10:55:50,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 10:55:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-07 10:55:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-07 10:55:50,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-07 10:55:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2020-07-07 10:55:50,409 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2020-07-07 10:55:50,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:55:50,410 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2020-07-07 10:55:50,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 10:55:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2020-07-07 10:55:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 10:55:50,411 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:50,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:55:50,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:55:50,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2027240245, now seen corresponding path program 1 times [2020-07-07 10:55:50,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:50,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671133099] [2020-07-07 10:55:50,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:50,622 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 10:55:50,623 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 10:55:50,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:55:50,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 10:55:50 BoogieIcfgContainer [2020-07-07 10:55:50,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 10:55:50,703 INFO L168 Benchmark]: Toolchain (without parser) took 1827.55 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 103.2 MB in the beginning and 109.6 MB in the end (delta: -6.5 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:50,704 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 10:55:50,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.76 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 102.7 MB in the beginning and 183.0 MB in the end (delta: -80.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:50,708 INFO L168 Benchmark]: Boogie Preprocessor took 56.80 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 180.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:50,709 INFO L168 Benchmark]: RCFGBuilder took 379.02 ms. Allocated memory is still 204.5 MB. Free memory was 180.7 MB in the beginning and 160.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:50,710 INFO L168 Benchmark]: TraceAbstraction took 893.15 ms. Allocated memory is still 204.5 MB. Free memory was 159.8 MB in the beginning and 109.6 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:50,721 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 493.76 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 102.7 MB in the beginning and 183.0 MB in the end (delta: -80.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.80 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 180.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 379.02 ms. Allocated memory is still 204.5 MB. Free memory was 180.7 MB in the beginning and 160.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 893.15 ms. Allocated memory is still 204.5 MB. Free memory was 159.8 MB in the beginning and 109.6 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000] [L75] float x = 0.0f; VAL [huge_floor=1000000000000000000000000000000, x=0] [L76] CALL, EXPR floor_float(x) VAL [\old(x)=0, huge_floor=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, x=0] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=-1, j0=2147483264, x=0] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=-1, j0=2147483264, x=0] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=-1, j0=2147483264, x=0] [L76] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=0] [L76] float res = floor_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000002, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000002, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 41 SDslu, 5 SDs, 0 SdLazy, 51 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...