/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:56:18,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:56:18,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:56:18,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:56:18,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:56:18,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:56:18,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:56:18,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:56:18,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:56:18,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:56:18,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:56:18,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:56:18,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:56:18,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:56:18,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:56:18,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:56:18,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:56:18,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:56:18,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:56:18,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:56:18,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:56:18,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:56:18,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:56:18,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:56:18,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:56:18,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:56:18,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:56:18,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:56:18,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:56:18,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:56:18,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:56:18,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:56:18,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:56:18,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:56:18,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:56:18,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:56:18,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:56:18,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:56:18,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:56:18,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:56:18,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:56:18,489 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 [2020-08-21 22:56:18,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:56:18,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:56:18,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:56:18,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:56:18,532 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:56:18,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:56:18,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:56:18,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:56:18,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:56:18,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:56:18,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:56:18,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:56:18,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:56:18,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:56:18,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:56:18,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:56:18,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:56:18,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:56:18,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:56:18,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:56:18,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:56:18,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:56:18,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:56:18,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:56:18,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:56:18,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:56:18,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:56:18,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:56:18,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:56:18,537 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:56:18,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:56:18,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:56:18,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:56:18,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:56:18,885 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:56:18,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-08-21 22:56:18,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3118c5462/fe53b52994d44089923310a7d9144b0e/FLAG7ad202e7a [2020-08-21 22:56:19,394 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:56:19,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-08-21 22:56:19,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3118c5462/fe53b52994d44089923310a7d9144b0e/FLAG7ad202e7a [2020-08-21 22:56:19,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3118c5462/fe53b52994d44089923310a7d9144b0e [2020-08-21 22:56:19,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:56:19,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:56:19,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:56:19,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:56:19,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:56:19,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7834ca3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19, skipping insertion in model container [2020-08-21 22:56:19,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:56:19,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:56:20,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:56:20,054 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:56:20,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:56:20,237 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:56:20,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20 WrapperNode [2020-08-21 22:56:20,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:56:20,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:56:20,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:56:20,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:56:20,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20" (1/1) ... [2020-08-21 22:56:20,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20" (1/1) ... [2020-08-21 22:56:20,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20" (1/1) ... [2020-08-21 22:56:20,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20" (1/1) ... [2020-08-21 22:56:20,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20" (1/1) ... [2020-08-21 22:56:20,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20" (1/1) ... [2020-08-21 22:56:20,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20" (1/1) ... [2020-08-21 22:56:20,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:56:20,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:56:20,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:56:20,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:56:20,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20" (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 [2020-08-21 22:56:20,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:56:20,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:56:20,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 22:56:20,366 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-08-21 22:56:20,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:56:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:56:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 22:56:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-08-21 22:56:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:56:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 22:56:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:56:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:56:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:56:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 22:56:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:56:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:56:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:56:20,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:56:20,920 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-08-21 22:56:20,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:56:20 BoogieIcfgContainer [2020-08-21 22:56:20,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:56:20,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:56:20,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:56:20,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:56:20,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:56:19" (1/3) ... [2020-08-21 22:56:20,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e7a351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:56:20, skipping insertion in model container [2020-08-21 22:56:20,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:20" (2/3) ... [2020-08-21 22:56:20,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e7a351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:56:20, skipping insertion in model container [2020-08-21 22:56:20,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:56:20" (3/3) ... [2020-08-21 22:56:20,937 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-08-21 22:56:20,948 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:56:20,956 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:56:20,972 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:56:20,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:56:20,997 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:56:20,997 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:56:20,997 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:56:20,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:56:20,998 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:56:20,998 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:56:20,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:56:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-08-21 22:56:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 22:56:21,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:56:21,030 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] [2020-08-21 22:56:21,031 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:56:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:56:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash 204549601, now seen corresponding path program 1 times [2020-08-21 22:56:21,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:56:21,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481940613] [2020-08-21 22:56:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:56:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:21,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:56:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:21,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:56:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:21,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 22:56:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:56:21,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481940613] [2020-08-21 22:56:21,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:56:21,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:56:21,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485226864] [2020-08-21 22:56:21,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:56:21,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:56:21,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:56:21,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:56:21,396 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-08-21 22:56:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:56:21,662 INFO L93 Difference]: Finished difference Result 108 states and 162 transitions. [2020-08-21 22:56:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:56:21,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 22:56:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:56:21,677 INFO L225 Difference]: With dead ends: 108 [2020-08-21 22:56:21,678 INFO L226 Difference]: Without dead ends: 54 [2020-08-21 22:56:21,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:56:21,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-21 22:56:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-21 22:56:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 22:56:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-08-21 22:56:21,740 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 25 [2020-08-21 22:56:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:56:21,741 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-08-21 22:56:21,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:56:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-08-21 22:56:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 22:56:21,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:56:21,744 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] [2020-08-21 22:56:21,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:56:21,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:56:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:56:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482264, now seen corresponding path program 1 times [2020-08-21 22:56:21,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:56:21,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933635393] [2020-08-21 22:56:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:56:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:21,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:56:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:21,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:56:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:21,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:56:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:56:21,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933635393] [2020-08-21 22:56:21,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:56:21,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:56:21,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198180670] [2020-08-21 22:56:21,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:56:21,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:56:21,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:56:21,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:56:21,985 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-08-21 22:56:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:56:22,219 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-08-21 22:56:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:56:22,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-21 22:56:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:56:22,224 INFO L225 Difference]: With dead ends: 57 [2020-08-21 22:56:22,224 INFO L226 Difference]: Without dead ends: 54 [2020-08-21 22:56:22,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:56:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-21 22:56:22,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-21 22:56:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 22:56:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-08-21 22:56:22,248 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 27 [2020-08-21 22:56:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:56:22,253 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-08-21 22:56:22,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:56:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-08-21 22:56:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-21 22:56:22,255 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:56:22,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-08-21 22:56:22,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:56:22,257 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:56:22,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:56:22,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1590755806, now seen corresponding path program 1 times [2020-08-21 22:56:22,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:56:22,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183237780] [2020-08-21 22:56:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:56:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:56:22,325 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:56:22,325 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:56:22,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:56:22,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:56:22 BoogieIcfgContainer [2020-08-21 22:56:22,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:56:22,353 INFO L168 Benchmark]: Toolchain (without parser) took 2564.73 ms. Allocated memory was 148.4 MB in the beginning and 235.9 MB in the end (delta: 87.6 MB). Free memory was 103.7 MB in the beginning and 167.8 MB in the end (delta: -64.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:22,354 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:56:22,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.55 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.5 MB in the beginning and 182.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:22,356 INFO L168 Benchmark]: Boogie Preprocessor took 60.58 ms. Allocated memory is still 205.0 MB. Free memory was 182.2 MB in the beginning and 179.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:22,356 INFO L168 Benchmark]: RCFGBuilder took 625.85 ms. Allocated memory is still 205.0 MB. Free memory was 179.6 MB in the beginning and 147.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:22,358 INFO L168 Benchmark]: TraceAbstraction took 1423.45 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 146.9 MB in the beginning and 167.8 MB in the end (delta: -20.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:22,361 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 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 449.55 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.5 MB in the beginning and 182.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.58 ms. Allocated memory is still 205.0 MB. Free memory was 182.2 MB in the beginning and 179.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 625.85 ms. Allocated memory is still 205.0 MB. Free memory was 179.6 MB in the beginning and 147.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1423.45 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 146.9 MB in the beginning and 167.8 MB in the end (delta: -20.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; [L116] double x = 0.0 / 0.0; [L117] double iptr; [L118] CALL, EXPR modf_double(x, &iptr) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; [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 TRUE j0 < 0 [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; [L118] RET, EXPR modf_double(x, &iptr) [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) [L121] CALL, EXPR isnan_double(iptr) [L15] return x != x; [L121] RET, EXPR isnan_double(iptr) [L121] isnan_double(iptr) && !isnan_double(res) [L121] CALL, EXPR isnan_double(res) [L15] return x != x; [L121] RET, EXPR isnan_double(res) [L121] isnan_double(iptr) && !isnan_double(res) [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 68 SDslu, 35 SDs, 0 SdLazy, 188 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...