/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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:37,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:37,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:37,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:37,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:37,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:37,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:37,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:37,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:37,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:37,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:37,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:37,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:37,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:37,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:37,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:37,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:37,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:37,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:37,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:37,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:37,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:37,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:37,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:37,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:37,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:37,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:37,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:37,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:37,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:37,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:37,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:37,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:37,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:37,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:37,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:37,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:37,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:37,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:37,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:37,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:37,532 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 12:20:37,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:37,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:37,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:37,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:37,562 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:37,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:37,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:37,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:37,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:37,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:37,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:37,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:37,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:37,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:37,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:37,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:37,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:37,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:37,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:37,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:37,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:37,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:37,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:37,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:37,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:37,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:37,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:37,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:37,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:37,567 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 12:20:38,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:38,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:38,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:38,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:38,140 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:38,142 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-21 12:20:38,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d223dd70/6b373e3d8d6342069de2ace3319b1caf/FLAGaff3e2c5d [2020-09-21 12:20:38,816 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:38,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-21 12:20:38,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d223dd70/6b373e3d8d6342069de2ace3319b1caf/FLAGaff3e2c5d [2020-09-21 12:20:39,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d223dd70/6b373e3d8d6342069de2ace3319b1caf [2020-09-21 12:20:39,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:39,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:39,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:39,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:39,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:39,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dffe24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39, skipping insertion in model container [2020-09-21 12:20:39,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:39,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:39,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:39,590 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:39,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:39,752 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:39,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39 WrapperNode [2020-09-21 12:20:39,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:39,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:39,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:39,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:39,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:39,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:39,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:39,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:39,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (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 12:20:39,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:39,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:39,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 12:20:39,953 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-21 12:20:39,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-21 12:20:39,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:39,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:39,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 12:20:39,956 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 12:20:39,956 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-21 12:20:39,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:39,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:39,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:39,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:39,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:39,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-21 12:20:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 12:20:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:40,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:40,597 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-21 12:20:40,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:40 BoogieIcfgContainer [2020-09-21 12:20:40,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:40,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:40,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:40,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:40,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:39" (1/3) ... [2020-09-21 12:20:40,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3172c296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:40, skipping insertion in model container [2020-09-21 12:20:40,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (2/3) ... [2020-09-21 12:20:40,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3172c296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:40, skipping insertion in model container [2020-09-21 12:20:40,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:40" (3/3) ... [2020-09-21 12:20:40,613 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-09-21 12:20:40,625 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:40,637 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:40,659 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:40,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:40,688 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:40,688 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:40,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:40,688 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:40,688 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:40,689 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:40,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:40,713 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-21 12:20:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:20:40,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:40,722 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] [2020-09-21 12:20:40,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:40,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-09-21 12:20:40,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:40,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180321611] [2020-09-21 12:20:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:41,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 12:20:41,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:20:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-21 12:20:41,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:20:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:41,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:20:41,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:41,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:20:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:20:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:20:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:20:41,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:41,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:20:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:41,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:41,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:20:41,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:20:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:20:41,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:41,482 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 12:20:41,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180321611] [2020-09-21 12:20:41,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:41,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:41,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347341246] [2020-09-21 12:20:41,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:41,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:41,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:41,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:41,519 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-21 12:20:41,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:41,856 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-09-21 12:20:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:20:41,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 12:20:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:41,872 INFO L225 Difference]: With dead ends: 138 [2020-09-21 12:20:41,873 INFO L226 Difference]: Without dead ends: 68 [2020-09-21 12:20:41,878 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 12:20:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-21 12:20:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-21 12:20:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 12:20:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-09-21 12:20:41,947 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-09-21 12:20:41,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:41,952 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-09-21 12:20:41,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:41,953 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-09-21 12:20:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 12:20:41,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:41,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:41,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:41,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:41,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:41,958 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-09-21 12:20:41,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:41,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396593720] [2020-09-21 12:20:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:42,093 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:42,093 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:42,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:42,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:42 BoogieIcfgContainer [2020-09-21 12:20:42,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:42,150 INFO L168 Benchmark]: Toolchain (without parser) took 3001.57 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 103.6 MB in the beginning and 165.3 MB in the end (delta: -61.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:42,152 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:20:42,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.53 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 103.0 MB in the beginning and 177.7 MB in the end (delta: -74.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:42,155 INFO L168 Benchmark]: Boogie Preprocessor took 120.47 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 174.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:42,156 INFO L168 Benchmark]: RCFGBuilder took 727.36 ms. Allocated memory is still 202.4 MB. Free memory was 174.2 MB in the beginning and 138.8 MB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:42,157 INFO L168 Benchmark]: TraceAbstraction took 1542.60 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 138.2 MB in the beginning and 165.3 MB in the end (delta: -27.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:42,167 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 600.53 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 103.0 MB in the beginning and 177.7 MB in the end (delta: -74.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.47 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 174.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 727.36 ms. Allocated memory is still 202.4 MB. Free memory was 174.2 MB in the beginning and 138.8 MB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1542.60 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 138.2 MB in the beginning and 165.3 MB in the end (delta: -27.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 5 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=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...