/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:19:02,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:19:02,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:19:02,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:19:02,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:19:02,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:19:02,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:19:02,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:19:02,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:19:02,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:19:02,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:19:02,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:19:02,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:19:02,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:19:02,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:19:02,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:19:02,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:19:02,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:19:02,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:19:02,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:19:02,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:19:02,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:19:02,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:19:02,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:19:02,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:19:02,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:19:02,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:19:02,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:19:02,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:19:02,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:19:02,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:19:02,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:19:02,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:19:02,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:19:02,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:19:02,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:19:02,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:19:02,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:19:02,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:19:02,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:19:02,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:19:02,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:19:02,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:19:02,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:19:02,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:19:02,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:19:02,786 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:19:02,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:19:02,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:19:02,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:19:02,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:19:02,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:19:02,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:19:02,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:19:02,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:19:02,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:19:02,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:19:02,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:19:02,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:19:02,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:19:02,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:19:02,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:19:02,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:19:02,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:19:02,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:19:02,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:19:02,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:19:02,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:19:02,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:19:02,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:19:02,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:19:02,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:19:03,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:19:03,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:19:03,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:19:03,295 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:19:03,296 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:19:03,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c [2020-09-21 11:19:03,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43a6aa08f/e17e36ad4d564ccc8fa488c2c4ea1319/FLAGffe046471 [2020-09-21 11:19:03,894 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:19:03,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c [2020-09-21 11:19:03,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43a6aa08f/e17e36ad4d564ccc8fa488c2c4ea1319/FLAGffe046471 [2020-09-21 11:19:04,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43a6aa08f/e17e36ad4d564ccc8fa488c2c4ea1319 [2020-09-21 11:19:04,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:19:04,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:19:04,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:04,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:19:04,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:19:04,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:04" (1/1) ... [2020-09-21 11:19:04,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e48a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04, skipping insertion in model container [2020-09-21 11:19:04,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:04" (1/1) ... [2020-09-21 11:19:04,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:19:04,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:19:04,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:04,563 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:19:04,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:04,619 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:19:04,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04 WrapperNode [2020-09-21 11:19:04,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:04,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:19:04,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:19:04,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:19:04,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04" (1/1) ... [2020-09-21 11:19:04,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04" (1/1) ... [2020-09-21 11:19:04,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04" (1/1) ... [2020-09-21 11:19:04,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04" (1/1) ... [2020-09-21 11:19:04,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04" (1/1) ... [2020-09-21 11:19:04,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04" (1/1) ... [2020-09-21 11:19:04,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04" (1/1) ... [2020-09-21 11:19:04,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:19:04,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:19:04,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:19:04,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:19:04,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 11:19:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:19:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:19:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-09-21 11:19:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-21 11:19:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-09-21 11:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:19:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:19:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:19:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:19:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:19:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-21 11:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:19:05,208 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:19:05,208 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 11:19:05,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:05 BoogieIcfgContainer [2020-09-21 11:19:05,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:19:05,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:19:05,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:19:05,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:19:05,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:19:04" (1/3) ... [2020-09-21 11:19:05,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d234e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:05, skipping insertion in model container [2020-09-21 11:19:05,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:04" (2/3) ... [2020-09-21 11:19:05,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d234e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:05, skipping insertion in model container [2020-09-21 11:19:05,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:05" (3/3) ... [2020-09-21 11:19:05,223 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a.c [2020-09-21 11:19:05,236 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:19:05,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:19:05,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:19:05,315 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:19:05,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:19:05,316 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:19:05,316 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:19:05,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:19:05,316 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:19:05,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:19:05,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:19:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-21 11:19:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:19:05,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:05,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:05,347 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:05,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:05,353 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2020-09-21 11:19:05,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:05,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615906137] [2020-09-21 11:19:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:05,506 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:05,506 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:05,506 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:05,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:05,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:19:05,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:05,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:19:05,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:19:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:05,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:05,598 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:05,598 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:05,599 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:05,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:19:05,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:05,640 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:05,641 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:05,641 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:05,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:05,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:19:05,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:05,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:19:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:05,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615906137] [2020-09-21 11:19:05,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:05,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:19:05,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170766324] [2020-09-21 11:19:05,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:19:05,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:05,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:19:05,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:19:05,684 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-09-21 11:19:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:05,897 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2020-09-21 11:19:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:19:05,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-21 11:19:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:05,912 INFO L225 Difference]: With dead ends: 78 [2020-09-21 11:19:05,912 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 11:19:05,917 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 [2020-09-21 11:19:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 11:19:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 11:19:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 11:19:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2020-09-21 11:19:05,971 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2020-09-21 11:19:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:05,972 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2020-09-21 11:19:05,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:19:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2020-09-21 11:19:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:19:05,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:05,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:05,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:19:05,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:05,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:05,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2020-09-21 11:19:05,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:05,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105582742] [2020-09-21 11:19:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:19:06,063 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:19:06,064 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:19:06,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:19:06,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:19:06 BoogieIcfgContainer [2020-09-21 11:19:06,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:19:06,119 INFO L168 Benchmark]: Toolchain (without parser) took 1854.20 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 108.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:06,123 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:19:06,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.78 ms. Allocated memory is still 141.0 MB. Free memory was 102.0 MB in the beginning and 90.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:06,127 INFO L168 Benchmark]: Boogie Preprocessor took 137.99 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 90.4 MB in the beginning and 181.3 MB in the end (delta: -90.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:06,128 INFO L168 Benchmark]: RCFGBuilder took 455.05 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 160.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:06,129 INFO L168 Benchmark]: TraceAbstraction took 900.39 ms. Allocated memory is still 203.9 MB. Free memory was 160.1 MB in the beginning and 108.9 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:06,137 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.78 ms. Allocated memory is still 141.0 MB. Free memory was 102.0 MB in the beginning and 90.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.99 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 90.4 MB in the beginning and 181.3 MB in the end (delta: -90.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.05 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 160.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 900.39 ms. Allocated memory is still 203.9 MB. Free memory was 160.1 MB in the beginning and 108.9 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of bitwiseAnd at line 21, overapproximation of someUnaryFLOAToperation at line 76, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; [L76] float x = -0.0f; [L77] CALL, EXPR ceil_float(x) [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; [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 [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; [L77] RET, EXPR ceil_float(x) [L77] float res = ceil_float(x); [L80] EXPR res == -0.0f && __signbit_float(res) == 1 [L80] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L81] __VERIFIER_error() - 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...