/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/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:11:16,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:11:16,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:11:16,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:11:16,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:11:16,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:11:16,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:11:16,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:11:16,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:11:16,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:11:16,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:11:16,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:11:16,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:11:16,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:11:16,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:11:16,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:11:16,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:11:16,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:11:16,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:11:16,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:11:16,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:11:16,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:11:16,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:11:16,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:11:16,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:11:16,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:11:16,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:11:16,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:11:16,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:11:16,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:11:16,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:11:16,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:11:16,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:11:16,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:11:16,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:11:16,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:11:16,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:11:16,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:11:16,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:11:16,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:11:16,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:11:16,535 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 02:11:16,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:11:16,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:11:16,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:11:16,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:11:16,583 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:11:16,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:11:16,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:11:16,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:11:16,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:11:16,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:11:16,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:11:16,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:11:16,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:11:16,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:11:16,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:11:16,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:11:16,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:11:16,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:11:16,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:11:16,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:11:16,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:11:16,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:11:16,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:11:16,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:11:16,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:11:16,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:11:16,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:11:16,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:11:16,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:11:16,589 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 02:11:16,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:11:16,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:11:16,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:11:16,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:11:16,966 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:11:16,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 02:11:17,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d72dfeaee/45bf6bf990d747e9a4647a888fea76a4/FLAG796737a07 [2020-08-22 02:11:17,491 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:11:17,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 02:11:17,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d72dfeaee/45bf6bf990d747e9a4647a888fea76a4/FLAG796737a07 [2020-08-22 02:11:17,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d72dfeaee/45bf6bf990d747e9a4647a888fea76a4 [2020-08-22 02:11:17,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:11:17,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:11:17,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:11:17,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:11:17,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:11:17,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:11:17" (1/1) ... [2020-08-22 02:11:17,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:17, skipping insertion in model container [2020-08-22 02:11:17,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:11:17" (1/1) ... [2020-08-22 02:11:17,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:11:17,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:11:18,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:11:18,119 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:11:18,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:11:18,271 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:11:18,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18 WrapperNode [2020-08-22 02:11:18,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:11:18,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:11:18,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:11:18,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:11:18,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18" (1/1) ... [2020-08-22 02:11:18,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18" (1/1) ... [2020-08-22 02:11:18,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18" (1/1) ... [2020-08-22 02:11:18,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18" (1/1) ... [2020-08-22 02:11:18,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18" (1/1) ... [2020-08-22 02:11:18,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18" (1/1) ... [2020-08-22 02:11:18,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18" (1/1) ... [2020-08-22 02:11:18,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:11:18,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:11:18,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:11:18,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:11:18,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18" (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 02:11:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:11:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:11:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-22 02:11:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-22 02:11:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:11:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:11:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 02:11:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-22 02:11:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:11:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 02:11:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:11:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:11:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 02:11:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:11:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-22 02:11:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:11:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:11:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 02:11:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:11:18,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:11:18,841 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-22 02:11:18,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:11:18 BoogieIcfgContainer [2020-08-22 02:11:18,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:11:18,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:11:18,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:11:18,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:11:18,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:11:17" (1/3) ... [2020-08-22 02:11:18,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e734a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:11:18, skipping insertion in model container [2020-08-22 02:11:18,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:11:18" (2/3) ... [2020-08-22 02:11:18,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e734a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:11:18, skipping insertion in model container [2020-08-22 02:11:18,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:11:18" (3/3) ... [2020-08-22 02:11:18,872 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-22 02:11:18,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:11:18,891 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:11:18,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:11:18,930 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:11:18,930 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:11:18,930 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:11:18,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:11:18,931 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:11:18,931 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:11:18,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:11:18,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:11:18,953 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-22 02:11:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 02:11:18,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:11:18,963 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 02:11:18,963 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:11:18,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:11:18,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-22 02:11:18,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:11:18,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197917298] [2020-08-22 02:11:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:11:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:11:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:11:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:11:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:11:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:11:19,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:11:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:11:19,306 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 02:11:19,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197917298] [2020-08-22 02:11:19,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:11:19,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:11:19,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643172011] [2020-08-22 02:11:19,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:11:19,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:11:19,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:11:19,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:11:19,332 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-22 02:11:19,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:11:19,645 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-22 02:11:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:11:19,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 02:11:19,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:11:19,663 INFO L225 Difference]: With dead ends: 112 [2020-08-22 02:11:19,664 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 02:11:19,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 02:11:19,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 02:11:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-22 02:11:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 02:11:19,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-22 02:11:19,743 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-22 02:11:19,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:11:19,743 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-22 02:11:19,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:11:19,744 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-22 02:11:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 02:11:19,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:11:19,746 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 02:11:19,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:11:19,747 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:11:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:11:19,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-22 02:11:19,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:11:19,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727215794] [2020-08-22 02:11:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:11:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:11:19,907 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:11:19,908 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:11:19,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:11:19,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:11:19 BoogieIcfgContainer [2020-08-22 02:11:19,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:11:19,964 INFO L168 Benchmark]: Toolchain (without parser) took 2103.94 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.9 MB in the beginning and 94.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:11:19,965 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:11:19,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.32 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.6 MB in the beginning and 179.8 MB in the end (delta: -77.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:11:19,969 INFO L168 Benchmark]: Boogie Preprocessor took 55.18 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 177.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:11:19,970 INFO L168 Benchmark]: RCFGBuilder took 534.55 ms. Allocated memory is still 201.9 MB. Free memory was 177.4 MB in the beginning and 148.8 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:11:19,972 INFO L168 Benchmark]: TraceAbstraction took 1094.87 ms. Allocated memory is still 201.9 MB. Free memory was 148.8 MB in the beginning and 94.8 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:11:19,978 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.32 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.6 MB in the beginning and 179.8 MB in the end (delta: -77.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.18 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 177.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 534.55 ms. Allocated memory is still 201.9 MB. Free memory was 177.4 MB in the beginning and 148.8 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1094.87 ms. Allocated memory is still 201.9 MB. Free memory was 148.8 MB in the beginning and 94.8 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 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: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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...