/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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:53,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:53,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:53,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:53,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:53,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:53,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:53,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:53,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:53,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:53,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:53,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:53,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:53,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:53,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:53,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:53,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:53,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:53,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:53,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:53,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:53,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:53,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:53,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:53,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:53,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:53,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:53,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:53,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:53,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:53,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:53,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:53,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:53,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:53,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:53,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:53,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:53,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:53,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:53,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:53,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:53,563 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 10:18:53,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:53,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:53,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:53,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:53,593 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:53,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:53,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:53,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:53,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:53,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:53,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:53,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:53,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:53,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:53,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:53,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:53,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:53,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:53,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:53,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:53,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:53,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:53,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:53,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:53,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:53,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:53,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:53,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:53,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:53,605 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 10:18:53,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:53,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:53,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:53,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:53,970 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:53,970 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-10-13 10:18:54,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9750c6980/e2d0fbcf4d2047f88f3363ae4f049074/FLAG53159c967 [2020-10-13 10:18:54,453 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:18:54,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-10-13 10:18:54,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9750c6980/e2d0fbcf4d2047f88f3363ae4f049074/FLAG53159c967 [2020-10-13 10:18:54,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9750c6980/e2d0fbcf4d2047f88f3363ae4f049074 [2020-10-13 10:18:54,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:18:54,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:18:54,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:54,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:18:54,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:18:54,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:54" (1/1) ... [2020-10-13 10:18:54,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d44f655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:54, skipping insertion in model container [2020-10-13 10:18:54,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:54" (1/1) ... [2020-10-13 10:18:54,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:18:54,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:18:55,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:55,061 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:18:55,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:55,259 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:18:55,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55 WrapperNode [2020-10-13 10:18:55,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:55,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:18:55,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:18:55,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:18:55,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55" (1/1) ... [2020-10-13 10:18:55,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55" (1/1) ... [2020-10-13 10:18:55,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55" (1/1) ... [2020-10-13 10:18:55,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55" (1/1) ... [2020-10-13 10:18:55,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55" (1/1) ... [2020-10-13 10:18:55,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55" (1/1) ... [2020-10-13 10:18:55,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55" (1/1) ... [2020-10-13 10:18:55,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:18:55,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:18:55,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:18:55,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:18:55,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55" (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 10:18:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:18:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:18:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-13 10:18:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-10-13 10:18:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:18:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:18:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-13 10:18:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-10-13 10:18:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:18:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:18:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:18:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:18:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:18:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:18:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:18:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:18:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:18:55,711 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:18:55,712 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 10:18:55,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:55 BoogieIcfgContainer [2020-10-13 10:18:55,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:18:55,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:18:55,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:18:55,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:18:55,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:54" (1/3) ... [2020-10-13 10:18:55,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757a046f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:55, skipping insertion in model container [2020-10-13 10:18:55,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:55" (2/3) ... [2020-10-13 10:18:55,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757a046f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:55, skipping insertion in model container [2020-10-13 10:18:55,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:55" (3/3) ... [2020-10-13 10:18:55,728 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-10-13 10:18:55,742 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:18:55,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:18:55,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:18:55,830 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:18:55,830 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:18:55,830 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:18:55,830 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:18:55,831 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:18:55,831 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:18:55,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:18:55,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:18:55,858 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-13 10:18:55,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:18:55,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:55,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:55,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:55,872 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-10-13 10:18:55,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:55,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896810737] [2020-10-13 10:18:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:56,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:56,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:56,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:18:56,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 10:18:56,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:56,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:56,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:18:56,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:56,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 10:18:56,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:56,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:56,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:56,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:56,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:18:56,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:56,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:56,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:56,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:18:56,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:18:56,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:56,242 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 10:18:56,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896810737] [2020-10-13 10:18:56,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:56,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:18:56,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453062340] [2020-10-13 10:18:56,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:18:56,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:56,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:18:56,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:18:56,268 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-13 10:18:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:56,483 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-10-13 10:18:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:18:56,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-13 10:18:56,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:56,498 INFO L225 Difference]: With dead ends: 76 [2020-10-13 10:18:56,498 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 10:18:56,502 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 [2020-10-13 10:18:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 10:18:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-13 10:18:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 10:18:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-10-13 10:18:56,550 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-10-13 10:18:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:56,551 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-13 10:18:56,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:18:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-10-13 10:18:56,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:18:56,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:56,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:56,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:18:56,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:56,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:56,554 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-10-13 10:18:56,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:56,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156239088] [2020-10-13 10:18:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:18:56,629 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:18:56,629 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:18:56,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:18:56,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:18:56 BoogieIcfgContainer [2020-10-13 10:18:56,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:18:56,679 INFO L168 Benchmark]: Toolchain (without parser) took 1843.26 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 102.1 MB in the end (delta: -877.1 kB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:56,682 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:18:56,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.05 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 180.8 MB in the end (delta: -79.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:56,684 INFO L168 Benchmark]: Boogie Preprocessor took 44.90 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:56,685 INFO L168 Benchmark]: RCFGBuilder took 410.15 ms. Allocated memory is still 202.9 MB. Free memory was 178.7 MB in the beginning and 156.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:56,688 INFO L168 Benchmark]: TraceAbstraction took 957.33 ms. Allocated memory is still 202.9 MB. Free memory was 155.7 MB in the beginning and 102.1 MB in the end (delta: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:56,698 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 426.05 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 180.8 MB in the end (delta: -79.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.90 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.15 ms. Allocated memory is still 202.9 MB. Free memory was 178.7 MB in the beginning and 156.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 957.33 ms. Allocated memory is still 202.9 MB. Free memory was 155.7 MB in the beginning and 102.1 MB in the end (delta: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 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=42occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.2s 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...