/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_1052a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:27:58,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:27:58,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:27:58,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:27:58,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:27:58,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:27:58,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:27:58,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:27:58,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:27:58,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:27:58,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:27:58,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:27:58,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:27:58,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:27:58,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:27:58,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:27:58,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:27:58,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:27:58,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:27:58,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:27:58,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:27:58,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:27:58,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:27:58,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:27:58,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:27:58,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:27:58,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:27:58,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:27:58,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:27:58,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:27:58,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:27:58,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:27:58,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:27:58,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:27:58,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:27:58,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:27:58,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:27:58,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:27:58,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:27:58,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:27:58,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:27:58,288 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 14:27:58,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:27:58,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:27:58,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:27:58,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:27:58,338 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:27:58,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:27:58,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:27:58,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:27:58,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:27:58,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:27:58,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:27:58,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:27:58,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:27:58,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:27:58,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:27:58,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:27:58,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:27:58,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:27:58,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:27:58,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:27:58,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:27:58,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:27:58,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:27:58,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:27:58,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:27:58,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:27:58,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:27:58,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:27:58,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:27:58,345 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:27:58,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:27:58,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:27:58,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:27:58,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:27:58,819 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:27:58,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-09-25 14:27:58,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c0fd648d/5bdc6c6ec92d4188a3e4f3bd7d890598/FLAGce70e9719 [2020-09-25 14:27:59,431 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:27:59,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-09-25 14:27:59,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c0fd648d/5bdc6c6ec92d4188a3e4f3bd7d890598/FLAGce70e9719 [2020-09-25 14:27:59,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c0fd648d/5bdc6c6ec92d4188a3e4f3bd7d890598 [2020-09-25 14:27:59,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:27:59,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:27:59,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:27:59,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:27:59,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:27:59,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:27:59" (1/1) ... [2020-09-25 14:27:59,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1516d3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:59, skipping insertion in model container [2020-09-25 14:27:59,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:27:59" (1/1) ... [2020-09-25 14:27:59,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:27:59,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:28:00,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:00,103 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:28:00,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:00,272 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:28:00,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00 WrapperNode [2020-09-25 14:28:00,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:00,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:28:00,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:28:00,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:28:00,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00" (1/1) ... [2020-09-25 14:28:00,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00" (1/1) ... [2020-09-25 14:28:00,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00" (1/1) ... [2020-09-25 14:28:00,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00" (1/1) ... [2020-09-25 14:28:00,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00" (1/1) ... [2020-09-25 14:28:00,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00" (1/1) ... [2020-09-25 14:28:00,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00" (1/1) ... [2020-09-25 14:28:00,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:28:00,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:28:00,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:28:00,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:28:00,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00" (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 14:28:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:28:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:28:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-25 14:28:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-25 14:28:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:28:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:28:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-25 14:28:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:28:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 14:28:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:28:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:28:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:28:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 14:28:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-25 14:28:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:28:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:28:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:28:00,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:28:00,993 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 14:28:01,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:01 BoogieIcfgContainer [2020-09-25 14:28:01,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:28:01,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:28:01,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:28:01,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:28:01,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:27:59" (1/3) ... [2020-09-25 14:28:01,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32190160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:01, skipping insertion in model container [2020-09-25 14:28:01,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:00" (2/3) ... [2020-09-25 14:28:01,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32190160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:01, skipping insertion in model container [2020-09-25 14:28:01,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:01" (3/3) ... [2020-09-25 14:28:01,022 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2020-09-25 14:28:01,035 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:28:01,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:28:01,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:28:01,099 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:28:01,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:28:01,099 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:28:01,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:28:01,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:28:01,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:28:01,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:28:01,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:28:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-09-25 14:28:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 14:28:01,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:01,138 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] [2020-09-25 14:28:01,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:01,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:01,145 INFO L82 PathProgramCache]: Analyzing trace with hash -603915510, now seen corresponding path program 1 times [2020-09-25 14:28:01,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:01,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748231900] [2020-09-25 14:28:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:01,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:01,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:28:01,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 14:28:01,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:01,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 14:28:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:28:01,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:01,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:01,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:28:01,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:28:01,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:01,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:28:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:01,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:01,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:01,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:28:01,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 14:28:01,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:01,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 14:28:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:28:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:01,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:01,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:01,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 14:28:01,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:01,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 14:28:01,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:01,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 14:28:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:01,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:01,883 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 14:28:01,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748231900] [2020-09-25 14:28:01,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:01,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:28:01,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593251896] [2020-09-25 14:28:01,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:28:01,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:01,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:28:01,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:28:01,916 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 4 states. [2020-09-25 14:28:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:02,408 INFO L93 Difference]: Finished difference Result 221 states and 264 transitions. [2020-09-25 14:28:02,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:28:02,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-25 14:28:02,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:02,425 INFO L225 Difference]: With dead ends: 221 [2020-09-25 14:28:02,426 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 14:28:02,431 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 14:28:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 14:28:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-09-25 14:28:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 14:28:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-09-25 14:28:02,495 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 41 [2020-09-25 14:28:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:02,496 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-09-25 14:28:02,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:28:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-09-25 14:28:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 14:28:02,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:02,500 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, 1, 1, 1] [2020-09-25 14:28:02,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:28:02,501 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:02,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:02,501 INFO L82 PathProgramCache]: Analyzing trace with hash -640308234, now seen corresponding path program 1 times [2020-09-25 14:28:02,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:02,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127057454] [2020-09-25 14:28:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:28:02,595 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:28:02,595 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:28:02,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:28:02,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:28:02 BoogieIcfgContainer [2020-09-25 14:28:02,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:28:02,630 INFO L168 Benchmark]: Toolchain (without parser) took 2847.17 ms. Allocated memory was 141.0 MB in the beginning and 235.4 MB in the end (delta: 94.4 MB). Free memory was 102.6 MB in the beginning and 174.7 MB in the end (delta: -72.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:02,631 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:28:02,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.99 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 181.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:02,633 INFO L168 Benchmark]: Boogie Preprocessor took 57.73 ms. Allocated memory is still 205.0 MB. Free memory was 181.9 MB in the beginning and 180.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:02,633 INFO L168 Benchmark]: RCFGBuilder took 673.80 ms. Allocated memory is still 205.0 MB. Free memory was 180.0 MB in the beginning and 150.7 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:02,634 INFO L168 Benchmark]: TraceAbstraction took 1615.73 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 150.0 MB in the beginning and 174.7 MB in the end (delta: -24.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:02,638 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 482.99 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 181.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.73 ms. Allocated memory is still 205.0 MB. Free memory was 181.9 MB in the beginning and 180.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 673.80 ms. Allocated memory is still 205.0 MB. Free memory was 180.0 MB in the beginning and 150.7 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1615.73 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 150.0 MB in the beginning and 174.7 MB in the end (delta: -24.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 91, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L101] double x = 1.0 / 0.0; [L102] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND FALSE !(j0 < 20) [L47] COND TRUE j0 > 51 [L48] COND TRUE j0 == 0x400 [L49] return x + x; [L102] RET, EXPR floor_double(x) [L102] double res = floor_double(x); [L105] CALL, EXPR isinf_double(res) [L81] __int32_t hx, lx; [L83] ieee_double_shape_type ew_u; [L84] ew_u.value = (x) [L85] EXPR ew_u.parts.msw [L85] (hx) = ew_u.parts.msw [L86] EXPR ew_u.parts.lsw [L86] (lx) = ew_u.parts.lsw [L88] hx &= 0x7fffffff [L89] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L90] hx = 0x7ff00000 - hx [L91] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L105] RET, EXPR isinf_double(res) [L105] COND TRUE !isinf_double(res) [L106] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 119 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 21 SDslu, 97 SDs, 0 SdLazy, 141 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=119occurred 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, 0.5s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3040 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...