/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=1.0 --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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:10:59,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:10:59,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:10:59,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:10:59,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:10:59,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:10:59,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:10:59,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:10:59,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:10:59,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:10:59,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:10:59,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:10:59,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:10:59,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:10:59,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:10:59,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:10:59,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:10:59,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:10:59,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:10:59,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:10:59,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:10:59,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:10:59,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:10:59,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:10:59,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:10:59,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:10:59,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:10:59,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:10:59,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:10:59,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:10:59,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:10:59,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:10:59,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:10:59,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:10:59,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:10:59,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:10:59,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:10:59,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:10:59,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:10:59,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:10:59,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:10:59,529 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 02:10:59,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:10:59,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:10:59,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:10:59,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:10:59,560 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:10:59,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:10:59,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:10:59,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:10:59,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:10:59,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:10:59,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:10:59,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:10:59,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:10:59,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:10:59,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:10:59,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:10:59,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:10:59,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:10:59,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:10:59,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:10:59,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:10:59,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:10:59,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:10:59,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:10:59,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:10:59,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:10:59,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:10:59,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:10:59,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:10:59,565 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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-08-22 02:10:59,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:10:59,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:10:59,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:10:59,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:10:59,944 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:10:59,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-22 02:11:00,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d82d0ba32/80fc5865fc4149bc829a601f4524d03e/FLAGf003f123f [2020-08-22 02:11:00,528 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:11:00,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-22 02:11:00,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d82d0ba32/80fc5865fc4149bc829a601f4524d03e/FLAGf003f123f [2020-08-22 02:11:00,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d82d0ba32/80fc5865fc4149bc829a601f4524d03e [2020-08-22 02:11:00,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:11:00,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:11:00,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:11:00,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:11:00,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:11:00,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:11:00" (1/1) ... [2020-08-22 02:11:00,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366b14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:00, skipping insertion in model container [2020-08-22 02:11:00,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:11:00" (1/1) ... [2020-08-22 02:11:00,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:11:00,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:11:01,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:11:01,161 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:11:01,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:11:01,336 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:11:01,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01 WrapperNode [2020-08-22 02:11:01,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:11:01,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:11:01,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:11:01,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:11:01,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01" (1/1) ... [2020-08-22 02:11:01,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01" (1/1) ... [2020-08-22 02:11:01,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01" (1/1) ... [2020-08-22 02:11:01,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01" (1/1) ... [2020-08-22 02:11:01,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01" (1/1) ... [2020-08-22 02:11:01,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01" (1/1) ... [2020-08-22 02:11:01,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01" (1/1) ... [2020-08-22 02:11:01,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:11:01,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:11:01,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:11:01,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:11:01,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01" (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 02:11:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:11:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:11:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 02:11:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-22 02:11:01,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:11:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:11:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 02:11:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 02:11:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:11:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 02:11:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:11:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:11:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 02:11:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:11:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-22 02:11:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:11:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:11:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 02:11:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:11:02,096 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:11:02,097 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 02:11:02,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:11:02 BoogieIcfgContainer [2020-08-22 02:11:02,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:11:02,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:11:02,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:11:02,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:11:02,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:11:00" (1/3) ... [2020-08-22 02:11:02,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d14405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:11:02, skipping insertion in model container [2020-08-22 02:11:02,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:01" (2/3) ... [2020-08-22 02:11:02,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d14405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:11:02, skipping insertion in model container [2020-08-22 02:11:02,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:11:02" (3/3) ... [2020-08-22 02:11:02,113 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-22 02:11:02,124 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:11:02,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:11:02,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:11:02,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:11:02,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:11:02,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:11:02,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:11:02,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:11:02,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:11:02,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:11:02,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:11:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-22 02:11:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 02:11:02,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:11:02,207 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] [2020-08-22 02:11:02,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:11:02,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:11:02,215 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-22 02:11:02,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:11:02,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368205528] [2020-08-22 02:11:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:11:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:11:02,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:11:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:11:02,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:11:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:11:02,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:11:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:11:02,492 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 02:11:02,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368205528] [2020-08-22 02:11:02,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:11:02,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:11:02,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925895263] [2020-08-22 02:11:02,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:11:02,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:11:02,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:11:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:11:02,528 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-22 02:11:02,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:11:02,867 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-22 02:11:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:11:02,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 02:11:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:11:02,902 INFO L225 Difference]: With dead ends: 138 [2020-08-22 02:11:02,902 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 02:11:02,907 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 [2020-08-22 02:11:02,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 02:11:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 02:11:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 02:11:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-22 02:11:02,958 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-22 02:11:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:11:02,959 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-22 02:11:02,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:11:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-22 02:11:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 02:11:02,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:11:02,961 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] [2020-08-22 02:11:02,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:11:02,962 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:11:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:11:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-22 02:11:02,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:11:02,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812785815] [2020-08-22 02:11:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:11:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:11:03,124 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:11:03,125 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:11:03,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:11:03,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:11:03 BoogieIcfgContainer [2020-08-22 02:11:03,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:11:03,178 INFO L168 Benchmark]: Toolchain (without parser) took 2325.27 ms. Allocated memory was 138.9 MB in the beginning and 232.8 MB in the end (delta: 93.8 MB). Free memory was 101.2 MB in the beginning and 191.8 MB in the end (delta: -90.6 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:11:03,178 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:11:03,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.71 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 175.4 MB in the end (delta: -74.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:11:03,185 INFO L168 Benchmark]: Boogie Preprocessor took 66.13 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 172.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:11:03,185 INFO L168 Benchmark]: RCFGBuilder took 698.72 ms. Allocated memory is still 200.3 MB. Free memory was 172.7 MB in the beginning and 136.8 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:11:03,186 INFO L168 Benchmark]: TraceAbstraction took 1071.39 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 136.8 MB in the beginning and 191.8 MB in the end (delta: -55.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:11:03,190 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 483.71 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 175.4 MB in the end (delta: -74.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.13 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 172.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 698.72 ms. Allocated memory is still 200.3 MB. Free memory was 172.7 MB in the beginning and 136.8 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1071.39 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 136.8 MB in the beginning and 191.8 MB in the end (delta: -55.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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...