/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=DEEPEST --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:31:13,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:31:13,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:31:13,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:31:13,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:31:13,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:31:13,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:31:13,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:31:13,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:31:13,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:31:13,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:31:13,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:31:13,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:31:13,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:31:13,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:31:13,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:31:13,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:31:13,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:31:14,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:31:14,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:31:14,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:31:14,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:31:14,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:31:14,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:31:14,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:31:14,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:31:14,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:31:14,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:31:14,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:31:14,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:31:14,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:31:14,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:31:14,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:31:14,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:31:14,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:31:14,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:31:14,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:31:14,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:31:14,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:31:14,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:31:14,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:31:14,019 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 20:31:14,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:31:14,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:31:14,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:31:14,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:31:14,043 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:31:14,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:31:14,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:31:14,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:31:14,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:31:14,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:31:14,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:31:14,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:31:14,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:31:14,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:31:14,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:31:14,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:31:14,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:31:14,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:31:14,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:31:14,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:31:14,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:31:14,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:31:14,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:31:14,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:31:14,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:31:14,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:31:14,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:31:14,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:31:14,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:31:14,048 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:31:14,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:31:14,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:31:14,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:31:14,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:31:14,396 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:31:14,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-21 20:31:14,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99a4fdf05/270f70da56f7470ea6868e3972f4ae4a/FLAGaa9fa6436 [2020-08-21 20:31:14,940 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:31:14,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-21 20:31:14,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99a4fdf05/270f70da56f7470ea6868e3972f4ae4a/FLAGaa9fa6436 [2020-08-21 20:31:15,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99a4fdf05/270f70da56f7470ea6868e3972f4ae4a [2020-08-21 20:31:15,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:31:15,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:31:15,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:31:15,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:31:15,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:31:15,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:31:15" (1/1) ... [2020-08-21 20:31:15,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d16764e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15, skipping insertion in model container [2020-08-21 20:31:15,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:31:15" (1/1) ... [2020-08-21 20:31:15,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:31:15,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:31:15,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:31:15,565 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:31:15,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:31:15,746 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:31:15,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15 WrapperNode [2020-08-21 20:31:15,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:31:15,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:31:15,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:31:15,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:31:15,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15" (1/1) ... [2020-08-21 20:31:15,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15" (1/1) ... [2020-08-21 20:31:15,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15" (1/1) ... [2020-08-21 20:31:15,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15" (1/1) ... [2020-08-21 20:31:15,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15" (1/1) ... [2020-08-21 20:31:15,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15" (1/1) ... [2020-08-21 20:31:15,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15" (1/1) ... [2020-08-21 20:31:15,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:31:15,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:31:15,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:31:15,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:31:15,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15" (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 20:31:15,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:31:15,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:31:15,862 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-21 20:31:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-21 20:31:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:31:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:31:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-21 20:31:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-21 20:31:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:31:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 20:31:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:31:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:31:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 20:31:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:31:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-21 20:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 20:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:31:16,346 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:31:16,346 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-21 20:31:16,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:31:16 BoogieIcfgContainer [2020-08-21 20:31:16,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:31:16,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:31:16,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:31:16,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:31:16,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:31:15" (1/3) ... [2020-08-21 20:31:16,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f71014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:31:16, skipping insertion in model container [2020-08-21 20:31:16,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:31:15" (2/3) ... [2020-08-21 20:31:16,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f71014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:31:16, skipping insertion in model container [2020-08-21 20:31:16,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:31:16" (3/3) ... [2020-08-21 20:31:16,360 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-21 20:31:16,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:31:16,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:31:16,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:31:16,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:31:16,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:31:16,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:31:16,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:31:16,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:31:16,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:31:16,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:31:16,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:31:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-21 20:31:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 20:31:16,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:31:16,471 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 20:31:16,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:31:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:31:16,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-21 20:31:16,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:31:16,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297624455] [2020-08-21 20:31:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:31:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:31:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:31:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:31:16,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:31:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:31:16,752 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 20:31:16,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297624455] [2020-08-21 20:31:16,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:31:16,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:31:16,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717154601] [2020-08-21 20:31:16,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:31:16,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:31:16,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:31:16,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:31:16,781 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-21 20:31:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:31:17,074 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-21 20:31:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:31:17,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 20:31:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:31:17,092 INFO L225 Difference]: With dead ends: 116 [2020-08-21 20:31:17,092 INFO L226 Difference]: Without dead ends: 56 [2020-08-21 20:31:17,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:31:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-21 20:31:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-21 20:31:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-21 20:31:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-21 20:31:17,174 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-21 20:31:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:31:17,175 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-21 20:31:17,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:31:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-21 20:31:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 20:31:17,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:31:17,180 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 20:31:17,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:31:17,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:31:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:31:17,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-21 20:31:17,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:31:17,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895850405] [2020-08-21 20:31:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:31:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 20:31:17,294 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 20:31:17,294 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:31:17,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:31:17,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:31:17 BoogieIcfgContainer [2020-08-21 20:31:17,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:31:17,320 INFO L168 Benchmark]: Toolchain (without parser) took 2029.20 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 100.9 MB in the beginning and 91.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:31:17,321 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 20:31:17,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.26 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 100.5 MB in the beginning and 175.3 MB in the end (delta: -74.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:31:17,323 INFO L168 Benchmark]: Boogie Preprocessor took 56.15 ms. Allocated memory is still 199.8 MB. Free memory was 175.3 MB in the beginning and 173.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:31:17,324 INFO L168 Benchmark]: RCFGBuilder took 547.71 ms. Allocated memory is still 199.8 MB. Free memory was 173.2 MB in the beginning and 144.5 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-21 20:31:17,325 INFO L168 Benchmark]: TraceAbstraction took 964.23 ms. Allocated memory is still 199.8 MB. Free memory was 144.5 MB in the beginning and 91.7 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-08-21 20:31:17,330 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 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 456.26 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 100.5 MB in the beginning and 175.3 MB in the end (delta: -74.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.15 ms. Allocated memory is still 199.8 MB. Free memory was 175.3 MB in the beginning and 173.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 547.71 ms. Allocated memory is still 199.8 MB. Free memory was 173.2 MB in the beginning and 144.5 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 964.23 ms. Allocated memory is still 199.8 MB. Free memory was 144.5 MB in the beginning and 91.7 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 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 bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [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] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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...