/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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 [2020-08-21 16:29:12,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:29:12,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:29:12,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:29:12,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:29:12,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:29:12,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:29:12,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:29:12,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:29:12,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:29:12,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:29:12,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:29:12,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:29:12,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:29:12,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:29:12,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:29:12,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:29:12,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:29:12,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:29:12,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:29:12,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:29:12,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:29:12,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:29:12,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:29:12,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:29:12,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:29:12,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:29:12,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:29:12,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:29:12,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:29:12,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:29:12,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:29:12,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:29:12,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:29:12,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:29:12,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:29:12,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:29:12,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:29:12,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:29:12,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:29:12,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:29:12,447 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 [2020-08-21 16:29:12,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:29:12,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:29:12,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:29:12,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:29:12,472 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:29:12,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:29:12,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:29:12,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:29:12,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:29:12,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:29:12,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:29:12,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:29:12,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:29:12,474 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:29:12,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:29:12,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:29:12,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:29:12,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:29:12,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:29:12,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:29:12,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:29:12,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:29:12,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:29:12,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:29:12,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:29:12,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:29:12,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:29:12,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:29:12,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:29:12,478 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:29:12,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:29:12,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:29:12,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:29:12,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:29:12,814 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:29:12,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 16:29:12,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/795f57e0c/e91561aedd9b44d68a89da546cc9b121/FLAG102317f6d [2020-08-21 16:29:13,397 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:29:13,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 16:29:13,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/795f57e0c/e91561aedd9b44d68a89da546cc9b121/FLAG102317f6d [2020-08-21 16:29:13,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/795f57e0c/e91561aedd9b44d68a89da546cc9b121 [2020-08-21 16:29:13,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:29:13,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:29:13,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:13,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:29:13,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:29:13,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:13" (1/1) ... [2020-08-21 16:29:13,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12eafce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:13, skipping insertion in model container [2020-08-21 16:29:13,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:13" (1/1) ... [2020-08-21 16:29:13,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:29:13,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:29:14,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:14,152 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:29:14,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:14,252 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:29:14,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14 WrapperNode [2020-08-21 16:29:14,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:14,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:29:14,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:29:14,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:29:14,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:29:14,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:29:14,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:29:14,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:29:14,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:29:14,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:29:14,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:29:14,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 16:29:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 16:29:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 16:29:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:29:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:29:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 16:29:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 16:29:14,403 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 16:29:14,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:29:14,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 16:29:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:29:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:29:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 16:29:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:29:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 16:29:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:29:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:29:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 16:29:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:29:15,009 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:29:15,010 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 16:29:15,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:15 BoogieIcfgContainer [2020-08-21 16:29:15,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:29:15,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:29:15,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:29:15,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:29:15,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:29:13" (1/3) ... [2020-08-21 16:29:15,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41278ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:15, skipping insertion in model container [2020-08-21 16:29:15,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (2/3) ... [2020-08-21 16:29:15,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41278ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:15, skipping insertion in model container [2020-08-21 16:29:15,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:15" (3/3) ... [2020-08-21 16:29:15,029 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-21 16:29:15,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:29:15,050 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:29:15,064 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:29:15,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:29:15,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:29:15,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:29:15,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:29:15,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:29:15,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:29:15,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:29:15,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:29:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-21 16:29:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 16:29:15,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:15,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:29:15,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:15,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-21 16:29:15,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:15,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614316485] [2020-08-21 16:29:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:29:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:29:15,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614316485] [2020-08-21 16:29:15,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:15,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:29:15,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990257621] [2020-08-21 16:29:15,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:29:15,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:29:15,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:29:15,451 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-21 16:29:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:15,817 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-21 16:29:15,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:29:15,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 16:29:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:15,830 INFO L225 Difference]: With dead ends: 142 [2020-08-21 16:29:15,831 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 16:29:15,835 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 [2020-08-21 16:29:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 16:29:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-21 16:29:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 16:29:15,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-21 16:29:15,886 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-21 16:29:15,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:15,886 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-21 16:29:15,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:29:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-21 16:29:15,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 16:29:15,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:15,888 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] [2020-08-21 16:29:15,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:29:15,889 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:15,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:15,890 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-21 16:29:15,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:15,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993688606] [2020-08-21 16:29:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:29:15,971 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:29:15,972 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:29:15,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:29:15,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:29:15 BoogieIcfgContainer [2020-08-21 16:29:15,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:29:15,998 INFO L168 Benchmark]: Toolchain (without parser) took 2256.33 ms. Allocated memory was 138.9 MB in the beginning and 234.4 MB in the end (delta: 95.4 MB). Free memory was 101.8 MB in the beginning and 191.6 MB in the end (delta: -89.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:15,999 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.16 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 175.9 MB in the end (delta: -74.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,001 INFO L168 Benchmark]: Boogie Preprocessor took 83.12 ms. Allocated memory is still 201.9 MB. Free memory was 175.9 MB in the beginning and 172.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,002 INFO L168 Benchmark]: RCFGBuilder took 683.40 ms. Allocated memory is still 201.9 MB. Free memory was 172.2 MB in the beginning and 136.1 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,003 INFO L168 Benchmark]: TraceAbstraction took 973.80 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 135.4 MB in the beginning and 191.6 MB in the end (delta: -56.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:29:16,007 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 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 510.16 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 175.9 MB in the end (delta: -74.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.12 ms. Allocated memory is still 201.9 MB. Free memory was 175.9 MB in the beginning and 172.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 683.40 ms. Allocated memory is still 201.9 MB. Free memory was 172.2 MB in the beginning and 136.1 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 973.80 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 135.4 MB in the beginning and 191.6 MB in the end (delta: -56.2 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: 0.8s, 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, 0.1s 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, 0.1s 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...