/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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 22:56:17,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:56:17,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:56:17,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:56:17,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:56:17,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:56:17,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:56:17,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:56:17,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:56:17,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:56:17,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:56:17,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:56:17,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:56:17,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:56:17,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:56:17,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:56:17,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:56:17,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:56:17,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:56:17,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:56:17,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:56:17,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:56:17,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:56:17,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:56:17,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:56:17,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:56:17,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:56:17,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:56:17,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:56:17,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:56:17,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:56:17,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:56:17,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:56:17,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:56:17,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:56:17,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:56:17,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:56:17,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:56:17,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:56:17,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:56:17,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:56:17,928 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 22:56:17,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:56:17,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:56:17,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:56:17,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:56:17,954 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:56:17,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:56:17,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:56:17,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:56:17,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:56:17,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:56:17,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:56:17,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:56:17,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:56:17,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:56:17,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:56:17,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:56:17,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:56:17,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:56:17,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:56:17,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:56:17,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:56:17,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:56:17,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:56:17,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:56:17,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:56:17,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:56:17,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:56:17,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:56:17,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:56:17,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:56:18,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:56:18,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:56:18,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:56:18,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:56:18,297 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:56:18,298 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 22:56:18,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7db24b911/b4511d288d834695b2bddc45ef9903f9/FLAG9e7c6ad31 [2020-08-21 22:56:18,809 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:56:18,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 22:56:18,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7db24b911/b4511d288d834695b2bddc45ef9903f9/FLAG9e7c6ad31 [2020-08-21 22:56:19,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7db24b911/b4511d288d834695b2bddc45ef9903f9 [2020-08-21 22:56:19,179 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:56:19,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:56:19,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:56:19,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:56:19,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:56:19,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30829a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19, skipping insertion in model container [2020-08-21 22:56:19,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:56:19,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:56:19,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:56:19,534 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:56:19,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:56:19,704 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:56:19,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19 WrapperNode [2020-08-21 22:56:19,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:56:19,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:56:19,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:56:19,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:56:19,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19" (1/1) ... [2020-08-21 22:56:19,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:56:19,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:56:19,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:56:19,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:56:19,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19" (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 22:56:19,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:56:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:56:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 22:56:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 22:56:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 22:56:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:56:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:56:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 22:56:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 22:56:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 22:56:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:56:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 22:56:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:56:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:56:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 22:56:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:56:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 22:56:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:56:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:56:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 22:56:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:56:20,465 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:56:20,465 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 22:56:20,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:56:20 BoogieIcfgContainer [2020-08-21 22:56:20,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:56:20,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:56:20,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:56:20,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:56:20,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:56:19" (1/3) ... [2020-08-21 22:56:20,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbb0848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:56:20, skipping insertion in model container [2020-08-21 22:56:20,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:19" (2/3) ... [2020-08-21 22:56:20,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbb0848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:56:20, skipping insertion in model container [2020-08-21 22:56:20,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:56:20" (3/3) ... [2020-08-21 22:56:20,480 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-21 22:56:20,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:56:20,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:56:20,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:56:20,542 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:56:20,543 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:56:20,543 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:56:20,543 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:56:20,543 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:56:20,544 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:56:20,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:56:20,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:56:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-21 22:56:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:56:20,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:56:20,575 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 22:56:20,575 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:56:20,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:56:20,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-21 22:56:20,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:56:20,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719023325] [2020-08-21 22:56:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:56:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:20,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:56:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:20,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:56:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:20,848 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 22:56:20,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719023325] [2020-08-21 22:56:20,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:56:20,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:56:20,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260022792] [2020-08-21 22:56:20,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:56:20,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:56:20,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:56:20,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:56:20,879 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-21 22:56:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:56:21,314 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-21 22:56:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:56:21,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 22:56:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:56:21,328 INFO L225 Difference]: With dead ends: 142 [2020-08-21 22:56:21,328 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 22:56:21,332 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 22:56:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 22:56:21,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-21 22:56:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 22:56:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-21 22:56:21,385 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-21 22:56:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:56:21,385 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-21 22:56:21,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:56:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-21 22:56:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 22:56:21,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:56:21,387 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 22:56:21,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:56:21,388 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:56:21,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:56:21,389 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-21 22:56:21,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:56:21,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743255668] [2020-08-21 22:56:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:56:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:56:21,459 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:56:21,460 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:56:21,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:56:21,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:56:21 BoogieIcfgContainer [2020-08-21 22:56:21,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:56:21,491 INFO L168 Benchmark]: Toolchain (without parser) took 2306.72 ms. Allocated memory was 141.0 MB in the beginning and 235.4 MB in the end (delta: 94.4 MB). Free memory was 103.5 MB in the beginning and 191.8 MB in the end (delta: -88.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:21,492 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 22:56:21,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.69 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 179.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:21,493 INFO L168 Benchmark]: Boogie Preprocessor took 73.52 ms. Allocated memory is still 203.9 MB. Free memory was 179.3 MB in the beginning and 176.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:21,494 INFO L168 Benchmark]: RCFGBuilder took 691.66 ms. Allocated memory is still 203.9 MB. Free memory was 176.7 MB in the beginning and 140.0 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:21,495 INFO L168 Benchmark]: TraceAbstraction took 1013.35 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 139.4 MB in the beginning and 191.8 MB in the end (delta: -52.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:56:21,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 522.69 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 179.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.52 ms. Allocated memory is still 203.9 MB. Free memory was 179.3 MB in the beginning and 176.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 691.66 ms. Allocated memory is still 203.9 MB. Free memory was 176.7 MB in the beginning and 140.0 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1013.35 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 139.4 MB in the beginning and 191.8 MB in the end (delta: -52.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...