/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_1092b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:34,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:34,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:34,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:34,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:34,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:34,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:34,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:34,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:34,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:34,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:34,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:34,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:34,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:34,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:34,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:34,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:34,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:34,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:34,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:34,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:34,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:34,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:34,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:34,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:34,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:34,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:34,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:34,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:34,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:34,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:34,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:34,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:34,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:34,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:34,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:34,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:34,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:34,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:34,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:34,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:34,990 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 [2020-09-21 12:20:35,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:35,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:35,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:35,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:35,025 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:35,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:35,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:35,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:35,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:35,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:35,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:35,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:35,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:35,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:35,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:35,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:35,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:35,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:35,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:35,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:35,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:35,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:35,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:35,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:35,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:35,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:35,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:35,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:35,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:35,033 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:20:35,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:35,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:35,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:35,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:35,567 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:35,569 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2020-09-21 12:20:35,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e36ecf4d/5156d28850e44f4eb80b4435be9be416/FLAG4989f0ad1 [2020-09-21 12:20:36,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:36,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2020-09-21 12:20:36,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e36ecf4d/5156d28850e44f4eb80b4435be9be416/FLAG4989f0ad1 [2020-09-21 12:20:36,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e36ecf4d/5156d28850e44f4eb80b4435be9be416 [2020-09-21 12:20:36,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:36,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:36,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:36,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:36,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:36,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fd97d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36, skipping insertion in model container [2020-09-21 12:20:36,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:36,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:36,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:36,910 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:37,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:37,102 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:37,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37 WrapperNode [2020-09-21 12:20:37,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:37,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:37,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:37,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:37,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37" (1/1) ... [2020-09-21 12:20:37,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37" (1/1) ... [2020-09-21 12:20:37,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37" (1/1) ... [2020-09-21 12:20:37,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37" (1/1) ... [2020-09-21 12:20:37,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37" (1/1) ... [2020-09-21 12:20:37,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37" (1/1) ... [2020-09-21 12:20:37,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37" (1/1) ... [2020-09-21 12:20:37,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:37,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:37,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:37,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:37,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37" (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 [2020-09-21 12:20:37,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 12:20:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-09-21 12:20:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 12:20:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-09-21 12:20:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:37,795 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:37,796 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 12:20:37,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:37 BoogieIcfgContainer [2020-09-21 12:20:37,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:37,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:37,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:37,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:37,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:36" (1/3) ... [2020-09-21 12:20:37,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4a6b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:37, skipping insertion in model container [2020-09-21 12:20:37,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:37" (2/3) ... [2020-09-21 12:20:37,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4a6b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:37, skipping insertion in model container [2020-09-21 12:20:37,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:37" (3/3) ... [2020-09-21 12:20:37,812 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2020-09-21 12:20:37,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:37,835 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:37,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:37,891 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:37,891 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:37,892 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:37,892 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:37,892 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:37,892 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:37,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:37,892 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-21 12:20:37,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 12:20:37,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:37,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:37,929 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:37,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:37,937 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-09-21 12:20:37,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:37,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65051946] [2020-09-21 12:20:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:38,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:38,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:20:38,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:20:38,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:20:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:20:38,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:38,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:38,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:38,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:38,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:38,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:20:38,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:38,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:38,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:38,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:20:38,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:38,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:20:38,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:38,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65051946] [2020-09-21 12:20:38,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:38,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:38,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265348538] [2020-09-21 12:20:38,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:38,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:38,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:38,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:38,360 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-09-21 12:20:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:38,618 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-09-21 12:20:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:20:38,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-21 12:20:38,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:38,638 INFO L225 Difference]: With dead ends: 76 [2020-09-21 12:20:38,638 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 12:20:38,643 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 [2020-09-21 12:20:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 12:20:38,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-21 12:20:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-21 12:20:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-09-21 12:20:38,695 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-09-21 12:20:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:38,695 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-09-21 12:20:38,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:38,696 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-09-21 12:20:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:20:38,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:38,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:38,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:38,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:38,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:38,698 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-09-21 12:20:38,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:38,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402742048] [2020-09-21 12:20:38,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:38,788 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:38,789 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:38,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:38,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:38 BoogieIcfgContainer [2020-09-21 12:20:38,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:38,839 INFO L168 Benchmark]: Toolchain (without parser) took 2256.53 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 100.4 MB in the beginning and 98.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,840 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.86 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 99.8 MB in the beginning and 176.6 MB in the end (delta: -76.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,842 INFO L168 Benchmark]: Boogie Preprocessor took 123.51 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 174.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,843 INFO L168 Benchmark]: RCFGBuilder took 571.25 ms. Allocated memory is still 198.7 MB. Free memory was 174.5 MB in the beginning and 151.9 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,844 INFO L168 Benchmark]: TraceAbstraction took 1032.17 ms. Allocated memory is still 198.7 MB. Free memory was 151.3 MB in the beginning and 98.9 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,849 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 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 518.86 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 99.8 MB in the beginning and 176.6 MB in the end (delta: -76.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.51 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 174.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 571.25 ms. Allocated memory is still 198.7 MB. Free memory was 174.5 MB in the beginning and 151.9 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1032.17 ms. Allocated memory is still 198.7 MB. Free memory was 151.3 MB in the beginning and 98.9 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 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 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: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.1s 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...