/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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:30,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:30,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:30,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:30,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:30,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:30,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:30,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:30,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:30,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:30,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:30,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:30,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:30,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:30,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:30,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:30,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:30,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:30,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:30,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:30,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:30,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:30,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:30,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:30,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:30,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:30,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:30,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:30,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:30,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:30,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:30,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:30,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:30,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:30,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:30,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:30,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:30,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:30,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:30,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:30,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:30,900 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 12:20:30,926 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:30,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:30,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:30,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:30,928 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:30,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:30,929 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:30,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:30,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:30,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:30,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:30,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:30,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:30,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:30,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:30,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:30,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:30,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:30,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:30,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:30,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:30,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:30,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:30,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:30,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:30,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:30,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:30,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:30,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:30,934 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 12:20:31,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:31,462 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:31,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:31,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:31,469 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:31,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-21 12:20:31,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce0e10773/2afca503d0234de1b5a7e91996e5b922/FLAGfa295bb4d [2020-09-21 12:20:32,123 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:32,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-21 12:20:32,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce0e10773/2afca503d0234de1b5a7e91996e5b922/FLAGfa295bb4d [2020-09-21 12:20:32,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce0e10773/2afca503d0234de1b5a7e91996e5b922 [2020-09-21 12:20:32,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:32,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:32,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:32,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:32,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:32,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43889371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32, skipping insertion in model container [2020-09-21 12:20:32,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:32,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:32,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:32,772 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:32,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:32,931 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:32,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32 WrapperNode [2020-09-21 12:20:32,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:32,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:32,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:32,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:32,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:32,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:32,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:32,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:32,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (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 12:20:33,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:33,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:33,074 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-21 12:20:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-21 12:20:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:33,076 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-21 12:20:33,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-21 12:20:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:33,505 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:33,505 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 12:20:33,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:33 BoogieIcfgContainer [2020-09-21 12:20:33,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:33,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:33,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:33,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:33,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:32" (1/3) ... [2020-09-21 12:20:33,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503d9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:33, skipping insertion in model container [2020-09-21 12:20:33,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (2/3) ... [2020-09-21 12:20:33,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503d9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:33, skipping insertion in model container [2020-09-21 12:20:33,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:33" (3/3) ... [2020-09-21 12:20:33,531 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-09-21 12:20:33,559 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:33,574 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:33,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:33,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:33,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:33,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:33,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:33,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:33,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:33,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:33,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-21 12:20:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:20:33,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:33,658 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 12:20:33,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:33,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:33,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-09-21 12:20:33,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:33,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265823054] [2020-09-21 12:20:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:33,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:33,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:20:33,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:33,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-21 12:20:33,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:20:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:33,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:20:34,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:34,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:34,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:34,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:34,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:20:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:34,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:34,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:20:34,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:34,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:20:34,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:20:34,136 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 12:20:34,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265823054] [2020-09-21 12:20:34,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:34,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:34,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886606519] [2020-09-21 12:20:34,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:34,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:34,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:34,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:34,173 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-09-21 12:20:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:34,445 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-09-21 12:20:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:20:34,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 12:20:34,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:34,462 INFO L225 Difference]: With dead ends: 94 [2020-09-21 12:20:34,462 INFO L226 Difference]: Without dead ends: 47 [2020-09-21 12:20:34,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:20:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-21 12:20:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-21 12:20:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-21 12:20:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-09-21 12:20:34,525 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-09-21 12:20:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:34,526 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-09-21 12:20:34,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:34,526 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-09-21 12:20:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:20:34,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:34,528 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] [2020-09-21 12:20:34,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:34,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:34,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:34,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-09-21 12:20:34,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:34,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755661506] [2020-09-21 12:20:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:34,591 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:34,592 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:34,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:34,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:34 BoogieIcfgContainer [2020-09-21 12:20:34,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:34,622 INFO L168 Benchmark]: Toolchain (without parser) took 2160.05 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 95.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,623 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.34 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.3 MB in the beginning and 179.2 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,625 INFO L168 Benchmark]: Boogie Preprocessor took 55.96 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 176.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,626 INFO L168 Benchmark]: RCFGBuilder took 527.05 ms. Allocated memory is still 201.3 MB. Free memory was 176.5 MB in the beginning and 152.6 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,627 INFO L168 Benchmark]: TraceAbstraction took 1101.43 ms. Allocated memory is still 201.3 MB. Free memory was 151.9 MB in the beginning and 95.0 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,631 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 463.34 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.3 MB in the beginning and 179.2 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.96 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 176.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 527.05 ms. Allocated memory is still 201.3 MB. Free memory was 176.5 MB in the beginning and 152.6 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1101.43 ms. Allocated memory is still 201.3 MB. Free memory was 151.9 MB in the beginning and 95.0 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] 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 TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 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: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...