/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 interpolation-heuristic=FIRST --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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:38,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:38,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:38,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:38,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:38,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:38,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:38,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:38,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:38,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:38,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:38,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:38,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:38,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:38,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:38,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:38,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:38,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:38,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:38,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:38,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:38,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:38,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:38,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:38,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:38,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:38,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:38,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:38,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:38,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:38,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:38,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:38,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:38,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:38,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:38,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:38,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:38,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:38,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:38,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:38,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:38,401 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 11:18:38,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:38,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:38,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:38,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:38,449 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:38,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:38,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:38,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:38,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:38,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:38,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:38,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:38,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:38,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:38,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:38,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:38,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:38,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:38,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:38,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:38,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:38,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:38,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:38,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:38,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:38,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:38,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:38,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:38,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:38,456 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:38,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:38,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:38,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:38,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:38,954 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:38,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-09-21 11:18:39,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/528c95332/2499bcec1d594f87a6ca44f362f9ccca/FLAGe4eab99e0 [2020-09-21 11:18:39,556 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:39,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-09-21 11:18:39,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/528c95332/2499bcec1d594f87a6ca44f362f9ccca/FLAGe4eab99e0 [2020-09-21 11:18:39,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/528c95332/2499bcec1d594f87a6ca44f362f9ccca [2020-09-21 11:18:39,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:39,909 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:39,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:39,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:39,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:39,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:39" (1/1) ... [2020-09-21 11:18:39,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134cd7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:39, skipping insertion in model container [2020-09-21 11:18:39,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:39" (1/1) ... [2020-09-21 11:18:39,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:39,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:40,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:40,264 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:40,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:40,428 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:40,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40 WrapperNode [2020-09-21 11:18:40,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:40,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:40,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:40,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:40,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40" (1/1) ... [2020-09-21 11:18:40,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40" (1/1) ... [2020-09-21 11:18:40,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40" (1/1) ... [2020-09-21 11:18:40,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40" (1/1) ... [2020-09-21 11:18:40,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40" (1/1) ... [2020-09-21 11:18:40,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40" (1/1) ... [2020-09-21 11:18:40,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40" (1/1) ... [2020-09-21 11:18:40,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:40,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:40,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:40,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:40,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40" (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 11:18:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-21 11:18:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 11:18:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-21 11:18:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 11:18:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:40,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:40,926 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 11:18:40,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:40 BoogieIcfgContainer [2020-09-21 11:18:40,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:40,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:40,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:40,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:40,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:39" (1/3) ... [2020-09-21 11:18:40,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd56d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:40, skipping insertion in model container [2020-09-21 11:18:40,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40" (2/3) ... [2020-09-21 11:18:40,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd56d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:40, skipping insertion in model container [2020-09-21 11:18:40,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:40" (3/3) ... [2020-09-21 11:18:40,943 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-09-21 11:18:40,958 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:40,971 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:40,999 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:41,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:41,038 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:41,038 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:41,038 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:41,039 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:41,039 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:41,039 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:41,039 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-21 11:18:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:18:41,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:41,085 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] [2020-09-21 11:18:41,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:41,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:41,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-09-21 11:18:41,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:41,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902870486] [2020-09-21 11:18:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:41,255 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:41,255 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:41,256 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:41,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:41,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:18:41,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:41,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:18:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:41,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:41,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:41,347 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:41,348 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:41,348 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:41,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:41,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:41,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:41,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:41,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:41,390 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:41,390 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:41,391 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:41,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:18:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:41,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:18:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:41,408 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:41,408 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:41,408 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:41,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:41,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:41,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:41,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:41,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:41,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:41,422 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 11:18:41,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902870486] [2020-09-21 11:18:41,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:41,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:41,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765774970] [2020-09-21 11:18:41,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:41,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:41,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:41,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:41,456 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-09-21 11:18:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:41,713 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-09-21 11:18:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:18:41,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-21 11:18:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:41,732 INFO L225 Difference]: With dead ends: 86 [2020-09-21 11:18:41,733 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 11:18:41,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 11:18:41,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 11:18:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-21 11:18:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 11:18:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-09-21 11:18:41,799 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-09-21 11:18:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:41,799 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-09-21 11:18:41,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-09-21 11:18:41,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:18:41,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:41,802 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] [2020-09-21 11:18:41,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:41,803 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:41,803 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-09-21 11:18:41,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:41,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820122380] [2020-09-21 11:18:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:41,870 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:41,870 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:41,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:41,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:41 BoogieIcfgContainer [2020-09-21 11:18:41,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:41,932 INFO L168 Benchmark]: Toolchain (without parser) took 2017.10 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.4 MB in the beginning and 102.6 MB in the end (delta: -236.6 kB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:41,933 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:18:41,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.78 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 182.8 MB in the end (delta: -81.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:41,936 INFO L168 Benchmark]: Boogie Preprocessor took 53.99 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:41,938 INFO L168 Benchmark]: RCFGBuilder took 450.02 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 158.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:41,939 INFO L168 Benchmark]: TraceAbstraction took 984.62 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 102.6 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:41,945 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 518.78 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 182.8 MB in the end (delta: -81.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.99 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.02 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 158.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 984.62 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 102.6 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: 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 someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] 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; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...