/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:57:12,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:57:12,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:57:12,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:57:12,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:57:12,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:57:12,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:57:12,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:57:12,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:57:12,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:57:12,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:57:12,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:57:12,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:57:12,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:57:12,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:57:12,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:57:12,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:57:12,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:57:12,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:57:12,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:57:12,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:57:12,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:57:12,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:57:12,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:57:12,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:57:12,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:57:12,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:57:12,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:57:12,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:57:12,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:57:12,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:57:12,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:57:12,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:57:12,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:57:12,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:57:12,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:57:12,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:57:12,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:57:12,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:57:12,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:57:12,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:57:12,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:57:12,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:57:12,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:57:12,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:57:12,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:57:12,626 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:57:12,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:57:12,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:57:12,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:57:12,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:57:12,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:57:12,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:57:12,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:57:12,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:57:12,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:57:12,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:57:12,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:57:12,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:57:12,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:57:12,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:57:12,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:57:12,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:57:12,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:57:12,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:57:12,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:57:12,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:57:12,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:57:12,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:57:12,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:57:12,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:57:12,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:57:12,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:57:12,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:57:12,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:57:12,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:57:12,954 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:57:12,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-08-19 05:57:13,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43298c71d/eafcfdc1329246dd90ebd4b9eb4ae84b/FLAGcb978cdee [2020-08-19 05:57:13,503 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:57:13,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-08-19 05:57:13,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43298c71d/eafcfdc1329246dd90ebd4b9eb4ae84b/FLAGcb978cdee [2020-08-19 05:57:13,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43298c71d/eafcfdc1329246dd90ebd4b9eb4ae84b [2020-08-19 05:57:13,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:57:13,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:57:13,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:57:13,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:57:13,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:57:13,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:57:13" (1/1) ... [2020-08-19 05:57:13,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebb600b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:13, skipping insertion in model container [2020-08-19 05:57:13,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:57:13" (1/1) ... [2020-08-19 05:57:13,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:57:13,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:57:14,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:57:14,124 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:57:14,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:57:14,169 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:57:14,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14 WrapperNode [2020-08-19 05:57:14,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:57:14,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:57:14,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:57:14,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:57:14,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:57:14,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:57:14,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:57:14,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:57:14,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:57:14,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:57:14,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:57:14,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 05:57:14,382 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-08-19 05:57:14,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 05:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-08-19 05:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 05:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 05:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:57:14,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:57:14,815 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-19 05:57:14,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:57:14 BoogieIcfgContainer [2020-08-19 05:57:14,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:57:14,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:57:14,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:57:14,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:57:14,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:57:13" (1/3) ... [2020-08-19 05:57:14,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22d619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:57:14, skipping insertion in model container [2020-08-19 05:57:14,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (2/3) ... [2020-08-19 05:57:14,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22d619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:57:14, skipping insertion in model container [2020-08-19 05:57:14,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:57:14" (3/3) ... [2020-08-19 05:57:14,832 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-08-19 05:57:14,843 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:57:14,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:57:14,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:57:14,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:57:14,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:57:14,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:57:14,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:57:14,888 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:57:14,888 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:57:14,888 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:57:14,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:57:14,905 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-19 05:57:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 05:57:14,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:57:14,913 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] [2020-08-19 05:57:14,913 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:57:14,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:57:14,919 INFO L82 PathProgramCache]: Analyzing trace with hash -452059413, now seen corresponding path program 1 times [2020-08-19 05:57:14,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:57:14,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851623146] [2020-08-19 05:57:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:57:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:57:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:57:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:15,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:57:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:57:15,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851623146] [2020-08-19 05:57:15,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:57:15,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:57:15,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458869976] [2020-08-19 05:57:15,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:57:15,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:57:15,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:57:15,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:57:15,186 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-08-19 05:57:15,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:57:15,367 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-08-19 05:57:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:57:15,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 05:57:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:57:15,382 INFO L225 Difference]: With dead ends: 66 [2020-08-19 05:57:15,382 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 05:57:15,386 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 [2020-08-19 05:57:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 05:57:15,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-19 05:57:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 05:57:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-08-19 05:57:15,434 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-08-19 05:57:15,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:57:15,435 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-08-19 05:57:15,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:57:15,435 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-08-19 05:57:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 05:57:15,436 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:57:15,437 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] [2020-08-19 05:57:15,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:57:15,437 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:57:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:57:15,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1570049965, now seen corresponding path program 1 times [2020-08-19 05:57:15,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:57:15,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254670586] [2020-08-19 05:57:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:57:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:57:15,526 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:57:15,527 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:57:15,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:57:15,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:57:15 BoogieIcfgContainer [2020-08-19 05:57:15,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:57:15,565 INFO L168 Benchmark]: Toolchain (without parser) took 1660.01 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.3 MB in the beginning and 117.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,566 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.47 ms. Allocated memory is still 141.6 MB. Free memory was 104.1 MB in the beginning and 92.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,568 INFO L168 Benchmark]: Boogie Preprocessor took 131.85 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 180.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,569 INFO L168 Benchmark]: RCFGBuilder took 519.15 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 159.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,570 INFO L168 Benchmark]: TraceAbstraction took 738.73 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 117.3 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,583 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 265.47 ms. Allocated memory is still 141.6 MB. Free memory was 104.1 MB in the beginning and 92.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.85 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 180.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 519.15 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 159.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 738.73 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 117.3 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L68] double x = 0.0 / 0.0; [L70] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L70] RET, EXPR trunc_double(x) [L70] double res = trunc_double(x); [L73] CALL, EXPR isnan_double(res) [L15] return x != x; [L73] RET, EXPR isnan_double(res) [L73] COND TRUE !isnan_double(res) [L74] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 29 SDslu, 5 SDs, 0 SdLazy, 39 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=37occurred 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, 946 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...