/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:45,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:45,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:45,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:45,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:45,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:45,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:45,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:45,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:45,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:45,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:45,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:45,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:45,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:45,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:45,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:45,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:45,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:45,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:45,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:45,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:45,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:45,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:45,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:45,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:45,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:45,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:45,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:45,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:45,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:45,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:45,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:45,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:45,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:45,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:45,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:45,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:45,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:45,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:45,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:45,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:45,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:18:45,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:45,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:45,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:45,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:45,377 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:45,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:45,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:45,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:45,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:45,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:45,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:45,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:45,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:45,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:45,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:45,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:45,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:45,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:45,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:45,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:45,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:45,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:45,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:45,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:45,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:45,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:45,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:45,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:45,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:45,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:45,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:45,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:45,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:45,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:45,914 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:45,915 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-21 11:18:46,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e86be5e5/21171c1f2ccd4dbd87864bf7af2625a4/FLAGa88603b29 [2020-09-21 11:18:46,582 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:46,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-21 11:18:46,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e86be5e5/21171c1f2ccd4dbd87864bf7af2625a4/FLAGa88603b29 [2020-09-21 11:18:46,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e86be5e5/21171c1f2ccd4dbd87864bf7af2625a4 [2020-09-21 11:18:46,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:46,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:46,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:46,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:46,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:46,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:46" (1/1) ... [2020-09-21 11:18:46,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f46d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:46, skipping insertion in model container [2020-09-21 11:18:46,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:46" (1/1) ... [2020-09-21 11:18:46,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:46,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:47,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:47,309 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:47,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:47,487 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:47,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47 WrapperNode [2020-09-21 11:18:47,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:47,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:47,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:47,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:47,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:47,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:47,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:47,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:47,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:47,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:47,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... [2020-09-21 11:18:47,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:47,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:47,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:47,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:47,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 11:18:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-21 11:18:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-21 11:18:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 11:18:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 11:18:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-21 11:18:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-21 11:18:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 11:18:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:48,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:48,247 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-21 11:18:48,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:48 BoogieIcfgContainer [2020-09-21 11:18:48,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:48,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:48,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:48,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:48,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:46" (1/3) ... [2020-09-21 11:18:48,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e09a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:48, skipping insertion in model container [2020-09-21 11:18:48,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:47" (2/3) ... [2020-09-21 11:18:48,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e09a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:48, skipping insertion in model container [2020-09-21 11:18:48,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:48" (3/3) ... [2020-09-21 11:18:48,263 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-09-21 11:18:48,275 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:48,286 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:48,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:48,333 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:48,334 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:48,334 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:48,334 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:48,334 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:48,334 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:48,334 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:48,335 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-21 11:18:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:18:48,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:48,370 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 11:18:48,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:48,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:48,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-09-21 11:18:48,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:48,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061571576] [2020-09-21 11:18:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:48,548 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:48,549 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:48,549 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:48,550 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:48,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:18:48,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:48,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:18:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:48,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:48,637 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:48,637 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:48,638 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:48,638 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:48,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:48,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:48,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:48,674 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:48,675 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:48,675 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:48,675 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:48,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:18:48,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:48,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:48,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:48,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:48,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:48,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:48,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:18:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:48,687 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:48,687 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:48,687 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:48,688 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:48,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:18:48,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:48,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:48,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061571576] [2020-09-21 11:18:48,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:48,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:48,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098525417] [2020-09-21 11:18:48,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:48,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:48,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:48,731 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-21 11:18:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:49,125 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-09-21 11:18:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:18:49,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 11:18:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:49,141 INFO L225 Difference]: With dead ends: 138 [2020-09-21 11:18:49,141 INFO L226 Difference]: Without dead ends: 68 [2020-09-21 11:18:49,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:18:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-21 11:18:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-21 11:18:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 11:18:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-09-21 11:18:49,202 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-09-21 11:18:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:49,203 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-09-21 11:18:49,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-09-21 11:18:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:18:49,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:49,205 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 11:18:49,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:49,205 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-09-21 11:18:49,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:49,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131334357] [2020-09-21 11:18:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:49,338 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:49,338 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:49,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:49,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:49 BoogieIcfgContainer [2020-09-21 11:18:49,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:49,372 INFO L168 Benchmark]: Toolchain (without parser) took 2442.51 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 103.7 MB in the beginning and 179.6 MB in the end (delta: -75.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,373 INFO L168 Benchmark]: CDTParser took 0.34 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 11:18:49,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 557.01 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.1 MB in the beginning and 177.8 MB in the end (delta: -74.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,375 INFO L168 Benchmark]: Boogie Preprocessor took 71.76 ms. Allocated memory is still 202.9 MB. Free memory was 177.8 MB in the beginning and 175.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,376 INFO L168 Benchmark]: RCFGBuilder took 691.48 ms. Allocated memory is still 202.9 MB. Free memory was 174.5 MB in the beginning and 139.4 MB in the end (delta: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:49,377 INFO L168 Benchmark]: TraceAbstraction took 1114.04 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 138.8 MB in the beginning and 179.6 MB in the end (delta: -40.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:18:49,382 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 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 557.01 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.1 MB in the beginning and 177.8 MB in the end (delta: -74.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.76 ms. Allocated memory is still 202.9 MB. Free memory was 177.8 MB in the beginning and 175.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 691.48 ms. Allocated memory is still 202.9 MB. Free memory was 174.5 MB in the beginning and 139.4 MB in the end (delta: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1114.04 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 138.8 MB in the beginning and 179.6 MB in the end (delta: -40.8 MB). There was no memory consumed. 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: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 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, 0.1s 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...