/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:59:34,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:59:34,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:59:34,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:59:34,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:59:34,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:59:34,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:59:34,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:59:34,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:59:34,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:59:34,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:59:34,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:59:34,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:59:34,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:59:34,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:59:34,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:59:34,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:59:34,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:59:34,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:59:34,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:59:34,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:59:34,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:59:34,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:59:34,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:59:34,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:59:34,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:59:34,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:59:34,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:59:34,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:59:34,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:59:34,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:59:34,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:59:34,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:59:34,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:59:34,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:59:34,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:59:34,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:59:34,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:59:34,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:59:34,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:59:34,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:59:34,700 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 [2020-09-25 01:59:34,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:59:34,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:59:34,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:59:34,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:59:34,754 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:59:34,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:59:34,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:59:34,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:59:34,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:59:34,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:59:34,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:59:34,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:59:34,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:59:34,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:59:34,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:59:34,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:59:34,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:59:34,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:59:34,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:59:34,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:59:34,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:59:34,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:59:34,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:59:34,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:59:34,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:59:34,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:59:34,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:59:34,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:59:34,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:59:34,761 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.rcfgbuilder: Size of a code block -> SingleStatement 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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 01:59:35,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:59:35,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:59:35,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:59:35,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:59:35,276 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:59:35,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-25 01:59:35,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22a7693aa/9c5be2e6681c4072bcad334be6452b0b/FLAG07698b46a [2020-09-25 01:59:35,946 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:59:35,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-25 01:59:35,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22a7693aa/9c5be2e6681c4072bcad334be6452b0b/FLAG07698b46a [2020-09-25 01:59:36,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22a7693aa/9c5be2e6681c4072bcad334be6452b0b [2020-09-25 01:59:36,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:59:36,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:59:36,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:36,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:59:36,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:59:36,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:36" (1/1) ... [2020-09-25 01:59:36,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c194a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36, skipping insertion in model container [2020-09-25 01:59:36,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:36" (1/1) ... [2020-09-25 01:59:36,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:59:36,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:59:36,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:36,625 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:59:36,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:36,855 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:59:36,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36 WrapperNode [2020-09-25 01:59:36,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:36,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:59:36,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:59:36,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:59:36,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36" (1/1) ... [2020-09-25 01:59:36,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36" (1/1) ... [2020-09-25 01:59:36,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36" (1/1) ... [2020-09-25 01:59:36,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36" (1/1) ... [2020-09-25 01:59:36,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36" (1/1) ... [2020-09-25 01:59:36,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36" (1/1) ... [2020-09-25 01:59:36,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36" (1/1) ... [2020-09-25 01:59:36,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:59:36,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:59:36,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:59:36,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:59:36,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36" (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 [2020-09-25 01:59:37,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:59:37,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:59:37,010 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-25 01:59:37,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 01:59:37,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:59:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:59:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-25 01:59:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:59:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 01:59:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:59:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:59:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:59:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 01:59:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 01:59:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:59:37,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:59:37,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:59:37,543 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:59:37,544 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 01:59:37,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:37 BoogieIcfgContainer [2020-09-25 01:59:37,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:59:37,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:59:37,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:59:37,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:59:37,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:59:36" (1/3) ... [2020-09-25 01:59:37,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35adb983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:37, skipping insertion in model container [2020-09-25 01:59:37,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:36" (2/3) ... [2020-09-25 01:59:37,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35adb983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:37, skipping insertion in model container [2020-09-25 01:59:37,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:37" (3/3) ... [2020-09-25 01:59:37,563 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-09-25 01:59:37,575 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:59:37,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:59:37,606 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:59:37,635 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:59:37,635 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:59:37,636 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:59:37,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:59:37,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:59:37,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:59:37,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:59:37,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:59:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-09-25 01:59:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 01:59:37,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:37,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:37,673 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:37,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:37,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1852514461, now seen corresponding path program 1 times [2020-09-25 01:59:37,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:37,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726750307] [2020-09-25 01:59:37,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:37,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:37,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 01:59:37,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 01:59:37,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 01:59:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:59:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:38,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:38,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:38,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:59:38,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:38,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 01:59:38,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:38,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:38,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:38,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 01:59:38,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 01:59:38,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 01:59:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:38,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726750307] [2020-09-25 01:59:38,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:38,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:59:38,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027330960] [2020-09-25 01:59:38,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:59:38,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:38,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:59:38,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:59:38,188 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 4 states. [2020-09-25 01:59:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:38,637 INFO L93 Difference]: Finished difference Result 213 states and 258 transitions. [2020-09-25 01:59:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:59:38,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 01:59:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:38,659 INFO L225 Difference]: With dead ends: 213 [2020-09-25 01:59:38,660 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 01:59:38,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:59:38,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 01:59:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-25 01:59:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 01:59:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-09-25 01:59:38,763 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 32 [2020-09-25 01:59:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:38,764 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-09-25 01:59:38,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:59:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-09-25 01:59:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 01:59:38,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:38,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:38,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:59:38,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:38,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1065550425, now seen corresponding path program 1 times [2020-09-25 01:59:38,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:38,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596991656] [2020-09-25 01:59:38,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:59:38,880 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:59:38,880 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:59:38,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:59:38,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:59:38 BoogieIcfgContainer [2020-09-25 01:59:38,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:59:38,914 INFO L168 Benchmark]: Toolchain (without parser) took 2627.06 ms. Allocated memory was 142.1 MB in the beginning and 230.7 MB in the end (delta: 88.6 MB). Free memory was 104.6 MB in the beginning and 186.5 MB in the end (delta: -82.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:38,915 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 142.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:59:38,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.17 ms. Allocated memory was 142.1 MB in the beginning and 207.6 MB in the end (delta: 65.5 MB). Free memory was 103.9 MB in the beginning and 186.0 MB in the end (delta: -82.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:38,917 INFO L168 Benchmark]: Boogie Preprocessor took 63.15 ms. Allocated memory is still 207.6 MB. Free memory was 186.0 MB in the beginning and 183.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:38,918 INFO L168 Benchmark]: RCFGBuilder took 633.75 ms. Allocated memory is still 207.6 MB. Free memory was 183.3 MB in the beginning and 154.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:38,919 INFO L168 Benchmark]: TraceAbstraction took 1354.81 ms. Allocated memory was 207.6 MB in the beginning and 230.7 MB in the end (delta: 23.1 MB). Free memory was 154.3 MB in the beginning and 186.5 MB in the end (delta: -32.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:59:38,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 142.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 565.17 ms. Allocated memory was 142.1 MB in the beginning and 207.6 MB in the end (delta: 65.5 MB). Free memory was 103.9 MB in the beginning and 186.0 MB in the end (delta: -82.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.15 ms. Allocated memory is still 207.6 MB. Free memory was 186.0 MB in the beginning and 183.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 633.75 ms. Allocated memory is still 207.6 MB. Free memory was 183.3 MB in the beginning and 154.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1354.81 ms. Allocated memory was 207.6 MB in the beginning and 230.7 MB in the end (delta: 23.1 MB). Free memory was 154.3 MB in the beginning and 186.5 MB in the end (delta: -32.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND FALSE !(j0 < 20) [L47] COND TRUE j0 > 51 [L48] COND TRUE j0 == 0x400 [L49] return x + x; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 19 SDslu, 97 SDs, 0 SdLazy, 137 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred 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, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1705 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...