/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_1032c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:51:21,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:51:21,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:51:21,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:51:21,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:51:21,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:51:21,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:51:21,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:51:21,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:51:21,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:51:21,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:51:21,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:51:21,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:51:21,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:51:21,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:51:21,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:51:21,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:51:21,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:51:21,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:51:21,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:51:21,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:51:21,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:51:21,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:51:21,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:51:21,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:51:21,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:51:21,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:51:21,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:51:21,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:51:21,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:51:21,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:51:21,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:51:21,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:51:21,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:51:21,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:51:21,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:51:21,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:51:21,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:51:21,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:51:21,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:51:21,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:51:21,721 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 08:51:21,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:51:21,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:51:21,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:51:21,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:51:21,768 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:51:21,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:51:21,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:51:21,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:51:21,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:51:21,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:51:21,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:51:21,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:51:21,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:51:21,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:51:21,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:51:21,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:51:21,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:51:21,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:51:21,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:51:21,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:51:21,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:51:21,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:51:21,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:51:21,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:51:21,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:51:21,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:51:21,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:51:21,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:51:21,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:51:21,775 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:51:22,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:51:22,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:51:22,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:51:22,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:51:22,268 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:51:22,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-09-25 08:51:22,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/052de7278/b5ca66af0d6e448e8147185309b86c92/FLAG23fb768c9 [2020-09-25 08:51:22,955 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:51:22,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-09-25 08:51:22,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/052de7278/b5ca66af0d6e448e8147185309b86c92/FLAG23fb768c9 [2020-09-25 08:51:23,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/052de7278/b5ca66af0d6e448e8147185309b86c92 [2020-09-25 08:51:23,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:51:23,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:51:23,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:51:23,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:51:23,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:51:23,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f71d04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23, skipping insertion in model container [2020-09-25 08:51:23,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:51:23,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:51:23,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:51:23,643 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:51:23,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:51:23,799 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:51:23,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23 WrapperNode [2020-09-25 08:51:23,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:51:23,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:51:23,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:51:23,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:51:23,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:51:23,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:51:23,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:51:23,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:51:23,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (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 08:51:23,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:51:23,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:51:23,945 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-09-25 08:51:23,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-25 08:51:23,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:51:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:51:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-09-25 08:51:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:51:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 08:51:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:51:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:51:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:51:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 08:51:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-25 08:51:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:51:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:51:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:51:24,467 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:51:24,467 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 08:51:24,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:51:24 BoogieIcfgContainer [2020-09-25 08:51:24,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:51:24,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:51:24,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:51:24,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:51:24,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:51:23" (1/3) ... [2020-09-25 08:51:24,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d942fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:51:24, skipping insertion in model container [2020-09-25 08:51:24,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (2/3) ... [2020-09-25 08:51:24,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d942fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:51:24, skipping insertion in model container [2020-09-25 08:51:24,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:51:24" (3/3) ... [2020-09-25 08:51:24,484 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-09-25 08:51:24,496 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:51:24,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:51:24,528 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:51:24,556 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:51:24,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:51:24,556 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:51:24,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:51:24,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:51:24,556 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:51:24,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:51:24,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:51:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-09-25 08:51:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 08:51:24,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:24,593 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] [2020-09-25 08:51:24,594 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash 223530101, now seen corresponding path program 1 times [2020-09-25 08:51:24,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:24,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606202867] [2020-09-25 08:51:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:25,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:25,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:51:25,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:51:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 08:51:25,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:25,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 08:51:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:51:25,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:51:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:25,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:25,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:51:25,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:51:25,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:25,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:25,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:51:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:25,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:25,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:25,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:51:25,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:51:25,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 08:51:25,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:25,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:25,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:51:25,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:25,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:25,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:51:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:25,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:25,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 08:51:25,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:25,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 08:51:25,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:25,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:51:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:25,357 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 08:51:25,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606202867] [2020-09-25 08:51:25,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:51:25,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:51:25,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753806230] [2020-09-25 08:51:25,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:51:25,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:51:25,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:51:25,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:51:25,394 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 4 states. [2020-09-25 08:51:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:51:25,739 INFO L93 Difference]: Finished difference Result 202 states and 231 transitions. [2020-09-25 08:51:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:51:25,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-25 08:51:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:51:25,756 INFO L225 Difference]: With dead ends: 202 [2020-09-25 08:51:25,756 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 08:51:25,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:51:25,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 08:51:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-09-25 08:51:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 08:51:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-09-25 08:51:25,822 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 38 [2020-09-25 08:51:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:51:25,823 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-09-25 08:51:25,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:51:25,823 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-09-25 08:51:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 08:51:25,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:25,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:51:25,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:51:25,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:25,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash 32877217, now seen corresponding path program 1 times [2020-09-25 08:51:25,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:25,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32332062] [2020-09-25 08:51:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:51:25,916 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:51:25,918 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:51:25,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:51:25,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:51:25 BoogieIcfgContainer [2020-09-25 08:51:25,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:51:25,972 INFO L168 Benchmark]: Toolchain (without parser) took 2656.55 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 100.5 MB in the beginning and 187.1 MB in the end (delta: -86.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:25,973 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 08:51:25,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.37 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.8 MB in the beginning and 181.1 MB in the end (delta: -81.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:25,975 INFO L168 Benchmark]: Boogie Preprocessor took 57.95 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:25,976 INFO L168 Benchmark]: RCFGBuilder took 613.70 ms. Allocated memory is still 202.4 MB. Free memory was 178.1 MB in the beginning and 151.2 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:25,977 INFO L168 Benchmark]: TraceAbstraction took 1491.21 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 150.5 MB in the beginning and 187.1 MB in the end (delta: -36.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:51:25,980 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 481.37 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.8 MB in the beginning and 181.1 MB in the end (delta: -81.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.95 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 613.70 ms. Allocated memory is still 202.4 MB. Free memory was 178.1 MB in the beginning and 151.2 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1491.21 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 150.5 MB in the beginning and 187.1 MB in the end (delta: -36.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 40, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L87] CALL, EXPR round_double(x) [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND FALSE !(exponent_less_1023 < 20) [L38] COND TRUE exponent_less_1023 > 51 [L39] COND TRUE exponent_less_1023 == 1024 [L40] return x + x; [L87] RET, EXPR round_double(x) [L87] double res = round_double(x); [L90] CALL, EXPR isinf_double(res) [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] RET, EXPR isinf_double(res) [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 17 SDslu, 82 SDs, 0 SdLazy, 124 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred 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, 0.6s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2590 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...