/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:33:11,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:33:11,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:33:11,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:33:11,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:33:11,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:33:11,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:33:11,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:33:11,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:33:11,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:33:11,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:33:11,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:33:11,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:33:11,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:33:11,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:33:11,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:33:11,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:33:11,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:33:11,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:33:11,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:33:11,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:33:11,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:33:11,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:33:11,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:33:11,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:33:11,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:33:11,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:33:11,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:33:11,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:33:11,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:33:11,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:33:11,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:33:11,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:33:11,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:33:11,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:33:11,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:33:11,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:33:11,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:33:11,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:33:11,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:33:11,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:33:11,474 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 [2020-08-22 00:33:11,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:33:11,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:33:11,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:33:11,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:33:11,499 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:33:11,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:33:11,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:33:11,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:33:11,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:33:11,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:33:11,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:33:11,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:33:11,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:33:11,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:33:11,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:33:11,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:33:11,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:33:11,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:33:11,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:33:11,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:33:11,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:33:11,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:33:11,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:33:11,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:33:11,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:33:11,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:33:11,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:33:11,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:33:11,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:33:11,504 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:33:11,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:33:11,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:33:11,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:33:11,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:33:11,841 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:33:11,842 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 00:33:11,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2fa8ddee/3d48ae89788c4176ab26ce707f4cfe3d/FLAG83b195feb [2020-08-22 00:33:12,384 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:33:12,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 00:33:12,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2fa8ddee/3d48ae89788c4176ab26ce707f4cfe3d/FLAG83b195feb [2020-08-22 00:33:12,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2fa8ddee/3d48ae89788c4176ab26ce707f4cfe3d [2020-08-22 00:33:12,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:33:12,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:33:12,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:12,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:33:12,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:33:12,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:12" (1/1) ... [2020-08-22 00:33:12,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44452bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:12, skipping insertion in model container [2020-08-22 00:33:12,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:12" (1/1) ... [2020-08-22 00:33:12,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:33:12,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:33:13,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:13,141 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:33:13,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:13,240 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:33:13,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13 WrapperNode [2020-08-22 00:33:13,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:13,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:33:13,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:33:13,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:33:13,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:33:13,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:33:13,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:33:13,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:33:13,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (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 [2020-08-22 00:33:13,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:33:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:33:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 00:33:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 00:33:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 00:33:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:33:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:33:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 00:33:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 00:33:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 00:33:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:33:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 00:33:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:33:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:33:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 00:33:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:33:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 00:33:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:33:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:33:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 00:33:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:33:14,055 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:33:14,056 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 00:33:14,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:14 BoogieIcfgContainer [2020-08-22 00:33:14,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:33:14,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:33:14,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:33:14,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:33:14,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:33:12" (1/3) ... [2020-08-22 00:33:14,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38225740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:14, skipping insertion in model container [2020-08-22 00:33:14,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (2/3) ... [2020-08-22 00:33:14,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38225740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:14, skipping insertion in model container [2020-08-22 00:33:14,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:14" (3/3) ... [2020-08-22 00:33:14,074 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-22 00:33:14,086 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:33:14,095 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:33:14,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:33:14,139 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:33:14,139 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:33:14,140 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:33:14,140 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:33:14,140 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:33:14,141 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:33:14,141 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:33:14,141 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:33:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-22 00:33:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 00:33:14,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:14,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:33:14,174 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:14,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-22 00:33:14,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:14,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119872193] [2020-08-22 00:33:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:14,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:33:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:14,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:33:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:33:14,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119872193] [2020-08-22 00:33:14,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:33:14,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:33:14,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84642475] [2020-08-22 00:33:14,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:33:14,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:33:14,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:33:14,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:33:14,546 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-22 00:33:14,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:33:14,931 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-22 00:33:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:33:14,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 00:33:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:33:14,951 INFO L225 Difference]: With dead ends: 142 [2020-08-22 00:33:14,951 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 00:33:14,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:33:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 00:33:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-22 00:33:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 00:33:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-22 00:33:15,001 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-22 00:33:15,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:33:15,002 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-22 00:33:15,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:33:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-22 00:33:15,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 00:33:15,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:15,004 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] [2020-08-22 00:33:15,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:33:15,005 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:15,005 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-22 00:33:15,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:15,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646158283] [2020-08-22 00:33:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:33:15,071 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:33:15,071 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:33:15,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:33:15,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:33:15 BoogieIcfgContainer [2020-08-22 00:33:15,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:33:15,095 INFO L168 Benchmark]: Toolchain (without parser) took 2334.86 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 103.8 MB in the beginning and 189.4 MB in the end (delta: -85.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:15,096 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 00:33:15,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.30 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.6 MB in the beginning and 177.7 MB in the end (delta: -74.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:15,098 INFO L168 Benchmark]: Boogie Preprocessor took 67.19 ms. Allocated memory is still 202.9 MB. Free memory was 177.7 MB in the beginning and 175.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:15,099 INFO L168 Benchmark]: RCFGBuilder took 755.27 ms. Allocated memory is still 202.9 MB. Free memory was 175.1 MB in the beginning and 138.8 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:15,100 INFO L168 Benchmark]: TraceAbstraction took 1025.70 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 138.1 MB in the beginning and 189.4 MB in the end (delta: -51.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:33:15,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 481.30 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.6 MB in the beginning and 177.7 MB in the end (delta: -74.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.19 ms. Allocated memory is still 202.9 MB. Free memory was 177.7 MB in the beginning and 175.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 755.27 ms. Allocated memory is still 202.9 MB. Free memory was 175.1 MB in the beginning and 138.8 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1025.70 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 138.1 MB in the beginning and 189.4 MB in the end (delta: -51.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: 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 bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] 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); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...