/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0971.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:40,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:40,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:40,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:40,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:40,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:40,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:40,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:40,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:40,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:40,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:40,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:40,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:40,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:40,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:40,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:40,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:40,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:40,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:40,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:40,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:40,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:40,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:40,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:40,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:40,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:40,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:40,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:40,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:40,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:40,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:40,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:40,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:40,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:40,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:40,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:40,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:40,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:40,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:40,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:40,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:40,542 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 [2020-10-13 10:18:40,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:40,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:40,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:40,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:40,589 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:40,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:40,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:40,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:40,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:40,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:40,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:40,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:40,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:40,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:40,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:40,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:40,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:40,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:40,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:40,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:40,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:40,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:40,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:40,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:40,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:40,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:40,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:40,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:40,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:40,595 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-13 10:18:40,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:40,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:40,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:40,921 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:40,921 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:40,922 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0971.c [2020-10-13 10:18:40,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d79e2f13/0cfdd512da28409299af711236a419d3/FLAG6fd81be71 [2020-10-13 10:18:41,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:18:41,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0971.c [2020-10-13 10:18:41,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d79e2f13/0cfdd512da28409299af711236a419d3/FLAG6fd81be71 [2020-10-13 10:18:41,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d79e2f13/0cfdd512da28409299af711236a419d3 [2020-10-13 10:18:41,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:18:41,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:18:41,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:41,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:18:41,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:18:41,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:41" (1/1) ... [2020-10-13 10:18:41,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fc9fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:41, skipping insertion in model container [2020-10-13 10:18:41,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:41" (1/1) ... [2020-10-13 10:18:41,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:18:41,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:18:42,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:42,189 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:18:42,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:42,356 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:18:42,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42 WrapperNode [2020-10-13 10:18:42,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:42,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:18:42,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:18:42,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:18:42,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42" (1/1) ... [2020-10-13 10:18:42,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42" (1/1) ... [2020-10-13 10:18:42,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42" (1/1) ... [2020-10-13 10:18:42,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42" (1/1) ... [2020-10-13 10:18:42,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42" (1/1) ... [2020-10-13 10:18:42,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42" (1/1) ... [2020-10-13 10:18:42,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42" (1/1) ... [2020-10-13 10:18:42,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:18:42,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:18:42,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:18:42,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:18:42,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42" (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 [2020-10-13 10:18:42,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:18:42,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:18:42,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2020-10-13 10:18:42,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10 [2020-10-13 10:18:42,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-13 10:18:42,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:18:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:18:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:18:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2020-10-13 10:18:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:18:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:18:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:18:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:18:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:18:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:18:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10 [2020-10-13 10:18:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-13 10:18:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:18:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:18:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:18:42,955 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:18:42,956 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-13 10:18:42,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:42 BoogieIcfgContainer [2020-10-13 10:18:42,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:18:42,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:18:42,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:18:42,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:18:42,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:41" (1/3) ... [2020-10-13 10:18:42,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b73ef5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:42, skipping insertion in model container [2020-10-13 10:18:42,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:42" (2/3) ... [2020-10-13 10:18:42,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b73ef5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:42, skipping insertion in model container [2020-10-13 10:18:42,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:42" (3/3) ... [2020-10-13 10:18:42,970 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0971.c [2020-10-13 10:18:42,981 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:18:42,990 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:18:43,005 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:18:43,034 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:18:43,034 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:18:43,034 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:18:43,034 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:18:43,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:18:43,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:18:43,035 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:18:43,035 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:18:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-13 10:18:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 10:18:43,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:43,066 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] [2020-10-13 10:18:43,066 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:43,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1314877079, now seen corresponding path program 1 times [2020-10-13 10:18:43,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:43,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115463703] [2020-10-13 10:18:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:43,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:43,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:43,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:18:43,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:43,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 10:18:43,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:18:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:43,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:18:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:43,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:43,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:43,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:18:43,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:43,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:43,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:43,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:43,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:18:43,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:43,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:18:43,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:43,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:43,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:43,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:43,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:18:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:43,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:18:43,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:18:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:18:43,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115463703] [2020-10-13 10:18:43,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:43,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:18:43,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385993367] [2020-10-13 10:18:43,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:18:43,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:43,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:18:43,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:18:43,650 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-10-13 10:18:44,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:44,026 INFO L93 Difference]: Finished difference Result 108 states and 163 transitions. [2020-10-13 10:18:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:18:44,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-13 10:18:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:44,039 INFO L225 Difference]: With dead ends: 108 [2020-10-13 10:18:44,040 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:18:44,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:18:44,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:18:44,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-13 10:18:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:18:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-10-13 10:18:44,095 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 22 [2020-10-13 10:18:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:44,096 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-10-13 10:18:44,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:18:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-10-13 10:18:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:18:44,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:44,098 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] [2020-10-13 10:18:44,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:18:44,098 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:44,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1448493112, now seen corresponding path program 1 times [2020-10-13 10:18:44,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:44,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9153721] [2020-10-13 10:18:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:18:44,175 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:18:44,176 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:18:44,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:18:44,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:18:44 BoogieIcfgContainer [2020-10-13 10:18:44,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:18:44,230 INFO L168 Benchmark]: Toolchain (without parser) took 2381.76 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 101.8 MB in the beginning and 163.0 MB in the end (delta: -61.2 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:44,231 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-13 10:18:44,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.45 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 101.6 MB in the beginning and 178.7 MB in the end (delta: -77.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:44,235 INFO L168 Benchmark]: Boogie Preprocessor took 60.10 ms. Allocated memory is still 202.9 MB. Free memory was 178.7 MB in the beginning and 175.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:44,236 INFO L168 Benchmark]: RCFGBuilder took 542.76 ms. Allocated memory is still 202.9 MB. Free memory was 175.6 MB in the beginning and 145.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:44,237 INFO L168 Benchmark]: TraceAbstraction took 1263.20 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 145.2 MB in the beginning and 163.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:44,249 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 510.45 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 101.6 MB in the beginning and 178.7 MB in the end (delta: -77.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.10 ms. Allocated memory is still 202.9 MB. Free memory was 178.7 MB in the beginning and 175.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 542.76 ms. Allocated memory is still 202.9 MB. Free memory was 175.6 MB in the beginning and 145.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1263.20 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 145.2 MB in the beginning and 163.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 175]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 161, overapproximation of bitwiseOr at line 132, overapproximation of someBinaryArithmeticDOUBLEoperation at line 133. Possible FailurePath: [L17-L26] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L28] static const double zero = 0.0; [L111-L114] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L116] static const double zero_log10 = 0.0; [L170] double x = 0.0 / 0.0; [L171] CALL, EXPR __ieee754_log10(x) [L119] double y, z; [L120] __int32_t i, k, hx; [L121] __uint32_t lx; [L124] ieee_double_shape_type ew_u; [L125] ew_u.value = (x) [L126] EXPR ew_u.parts.msw [L126] (hx) = ew_u.parts.msw [L127] EXPR ew_u.parts.lsw [L127] (lx) = ew_u.parts.lsw [L130] k = 0 [L131] COND TRUE hx < 0x00100000 [L132] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L133] return -two54_log10 / zero_log10; [L171] RET, EXPR __ieee754_log10(x) [L171] double res = __ieee754_log10(x); [L174] CALL, EXPR isnan_double(res) [L161] return x != x; [L174] RET, EXPR isnan_double(res) [L174] COND TRUE !isnan_double(res) [L175] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 58 SDslu, 5 SDs, 0 SdLazy, 73 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1890 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...