/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:26:51,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:26:51,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:26:51,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:26:51,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:26:51,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:26:51,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:26:51,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:26:51,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:26:51,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:26:51,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:26:51,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:26:51,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:26:51,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:26:51,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:26:51,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:26:51,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:26:51,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:26:51,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:26:51,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:26:51,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:26:51,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:26:51,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:26:51,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:26:51,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:26:51,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:26:51,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:26:51,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:26:51,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:26:51,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:26:51,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:26:51,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:26:51,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:26:51,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:26:51,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:26:51,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:26:51,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:26:51,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:26:51,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:26:51,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:26:51,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:26:51,662 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 [2020-10-28 14:26:51,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:26:51,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:26:51,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:26:51,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:26:51,693 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:26:51,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:26:51,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:26:51,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:26:51,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:26:51,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:26:51,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:26:51,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:26:51,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:26:51,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:26:51,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:26:51,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:26:51,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:26:51,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:26:51,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:26:51,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:26:51,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:26:51,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:51,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:26:51,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:26:51,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:26:51,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:26:51,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:26:51,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:26:51,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:26:51,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:26:52,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:26:52,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:26:52,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:26:52,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:26:52,148 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:26:52,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-10-28 14:26:52,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f57e0be94/38baf1cb954540d899792dc017f691c0/FLAGd1a4323ea [2020-10-28 14:26:52,840 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:26:52,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-10-28 14:26:52,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f57e0be94/38baf1cb954540d899792dc017f691c0/FLAGd1a4323ea [2020-10-28 14:26:53,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f57e0be94/38baf1cb954540d899792dc017f691c0 [2020-10-28 14:26:53,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:26:53,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:26:53,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:53,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:26:53,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:26:53,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:53" (1/1) ... [2020-10-28 14:26:53,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ada3029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53, skipping insertion in model container [2020-10-28 14:26:53,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:53" (1/1) ... [2020-10-28 14:26:53,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:26:53,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:26:53,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:53,490 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:26:53,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:53,543 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:26:53,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53 WrapperNode [2020-10-28 14:26:53,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:53,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:26:53,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:26:53,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:26:53,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53" (1/1) ... [2020-10-28 14:26:53,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53" (1/1) ... [2020-10-28 14:26:53,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53" (1/1) ... [2020-10-28 14:26:53,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53" (1/1) ... [2020-10-28 14:26:53,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53" (1/1) ... [2020-10-28 14:26:53,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53" (1/1) ... [2020-10-28 14:26:53,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53" (1/1) ... [2020-10-28 14:26:53,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:26:53,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:26:53,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:26:53,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:26:53,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53" (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 [2020-10-28 14:26:53,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:26:53,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:26:53,685 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:26:53,686 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-10-28 14:26:53,686 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-28 14:26:53,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:26:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:26:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:26:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:26:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:26:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-10-28 14:26:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:26:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:26:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:26:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:26:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:26:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-28 14:26:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:26:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:26:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:26:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:26:54,422 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:26:54,422 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 14:26:54,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:54 BoogieIcfgContainer [2020-10-28 14:26:54,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:26:54,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:26:54,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:26:54,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:26:54,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:26:53" (1/3) ... [2020-10-28 14:26:54,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a193726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:54, skipping insertion in model container [2020-10-28 14:26:54,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:53" (2/3) ... [2020-10-28 14:26:54,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a193726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:54, skipping insertion in model container [2020-10-28 14:26:54,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:54" (3/3) ... [2020-10-28 14:26:54,443 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-10-28 14:26:54,462 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:26:54,471 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:26:54,488 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:26:54,534 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:26:54,534 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:26:54,534 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:26:54,535 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:26:54,535 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:26:54,535 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:26:54,535 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:26:54,536 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:26:54,566 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-28 14:26:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:26:54,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:54,622 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] [2020-10-28 14:26:54,623 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:54,633 INFO L82 PathProgramCache]: Analyzing trace with hash -783016605, now seen corresponding path program 1 times [2020-10-28 14:26:54,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:54,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924537382] [2020-10-28 14:26:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:54,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:54,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:26:54,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:54,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 14:26:54,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:54,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:26:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:26:55,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:55,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:55,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:55,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:55,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:26:55,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:55,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:55,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:55,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:55,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:55,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:26:55,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:55,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:26:55,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:55,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:26:55,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:55,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:55,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 14:26:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:55,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:55,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:55,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:26:55,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:55,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:26:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:55,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:26:55,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924537382] [2020-10-28 14:26:55,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:55,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:26:55,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348683943] [2020-10-28 14:26:55,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:26:55,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:55,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:26:55,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:26:55,216 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-10-28 14:26:55,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:55,727 INFO L93 Difference]: Finished difference Result 91 states and 130 transitions. [2020-10-28 14:26:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:26:55,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 14:26:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:55,740 INFO L225 Difference]: With dead ends: 91 [2020-10-28 14:26:55,740 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 14:26:55,743 INFO L677 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 [2020-10-28 14:26:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 14:26:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-28 14:26:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 14:26:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-10-28 14:26:55,788 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 24 [2020-10-28 14:26:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:55,788 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-10-28 14:26:55,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:26:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-10-28 14:26:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:26:55,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:55,790 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] [2020-10-28 14:26:55,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:26:55,791 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:55,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1735384297, now seen corresponding path program 1 times [2020-10-28 14:26:55,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:55,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428234808] [2020-10-28 14:26:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:55,860 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:55,861 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:55,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:55,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:55 BoogieIcfgContainer [2020-10-28 14:26:55,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:55,893 INFO L168 Benchmark]: Toolchain (without parser) took 2655.55 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 74.5 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:55,894 INFO L168 Benchmark]: CDTParser took 1.22 ms. Allocated memory is still 151.0 MB. Free memory is still 104.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:55,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.34 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 114.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:55,896 INFO L168 Benchmark]: Boogie Preprocessor took 54.65 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 112.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:55,897 INFO L168 Benchmark]: RCFGBuilder took 824.02 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 90.8 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:55,897 INFO L168 Benchmark]: TraceAbstraction took 1458.03 ms. Allocated memory is still 151.0 MB. Free memory was 90.2 MB in the beginning and 74.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:55,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22 ms. Allocated memory is still 151.0 MB. Free memory is still 104.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.34 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 114.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.65 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 112.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 824.02 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 90.8 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1458.03 ms. Allocated memory is still 151.0 MB. Free memory was 90.2 MB in the beginning and 74.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 40, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 82. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR floor_double(x) [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L28] COND TRUE j0 < 20 [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; [L91] RET, EXPR floor_double(x) [L91] double res = floor_double(x); [L94] CALL, EXPR isnan_double(res) [L82] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1051.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 10 SDslu, 50 SDs, 0 SdLazy, 56 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1564 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...