/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:45:50,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:45:50,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:45:50,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:45:50,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:45:50,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:45:50,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:45:50,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:45:50,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:45:50,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:45:50,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:45:50,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:45:50,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:45:50,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:45:50,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:45:50,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:45:50,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:45:50,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:45:50,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:45:50,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:45:50,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:45:50,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:45:50,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:45:50,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:45:50,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:45:50,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:45:50,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:45:50,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:45:50,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:45:50,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:45:50,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:45:50,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:45:50,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:45:50,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:45:50,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:45:50,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:45:50,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:45:50,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:45:50,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:45:50,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:45:50,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:45:50,160 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 [2020-08-19 06:45:50,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:45:50,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:45:50,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:45:50,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:45:50,186 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:45:50,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:45:50,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:45:50,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:45:50,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:45:50,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:45:50,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:45:50,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:45:50,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:45:50,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:45:50,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:45:50,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:45:50,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:45:50,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:45:50,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:45:50,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:45:50,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:45:50,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:45:50,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:45:50,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:45:50,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:45:50,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:45:50,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:45:50,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:45:50,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:45:50,196 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:45:50,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:45:50,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:45:50,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:45:50,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:45:50,549 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:45:50,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-19 06:45:50,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6280ca3a4/e5ca714ad8614965bf7a98fc31c01ad1/FLAG3a4dd6b6e [2020-08-19 06:45:51,081 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:45:51,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-19 06:45:51,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6280ca3a4/e5ca714ad8614965bf7a98fc31c01ad1/FLAG3a4dd6b6e [2020-08-19 06:45:51,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6280ca3a4/e5ca714ad8614965bf7a98fc31c01ad1 [2020-08-19 06:45:51,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:45:51,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:45:51,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:45:51,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:45:51,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:45:51,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:45:51" (1/1) ... [2020-08-19 06:45:51,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51, skipping insertion in model container [2020-08-19 06:45:51,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:45:51" (1/1) ... [2020-08-19 06:45:51,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:45:51,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:45:51,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:45:51,752 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:45:51,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:45:51,979 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:45:51,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51 WrapperNode [2020-08-19 06:45:51,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:45:51,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:45:51,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:45:51,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:45:51,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51" (1/1) ... [2020-08-19 06:45:51,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51" (1/1) ... [2020-08-19 06:45:52,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51" (1/1) ... [2020-08-19 06:45:52,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51" (1/1) ... [2020-08-19 06:45:52,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51" (1/1) ... [2020-08-19 06:45:52,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51" (1/1) ... [2020-08-19 06:45:52,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51" (1/1) ... [2020-08-19 06:45:52,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:45:52,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:45:52,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:45:52,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:45:52,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51" (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 [2020-08-19 06:45:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:45:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:45:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 06:45:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-19 06:45:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-19 06:45:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:45:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:45:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 06:45:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 06:45:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-19 06:45:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:45:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 06:45:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:45:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:45:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 06:45:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:45:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-19 06:45:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:45:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:45:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 06:45:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:45:52,753 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:45:52,753 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-19 06:45:52,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:45:52 BoogieIcfgContainer [2020-08-19 06:45:52,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:45:52,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:45:52,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:45:52,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:45:52,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:45:51" (1/3) ... [2020-08-19 06:45:52,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96a45cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:45:52, skipping insertion in model container [2020-08-19 06:45:52,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:51" (2/3) ... [2020-08-19 06:45:52,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96a45cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:45:52, skipping insertion in model container [2020-08-19 06:45:52,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:45:52" (3/3) ... [2020-08-19 06:45:52,768 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-19 06:45:52,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:45:52,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:45:52,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:45:52,823 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:45:52,823 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:45:52,824 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:45:52,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:45:52,824 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:45:52,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:45:52,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:45:52,825 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:45:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-19 06:45:52,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 06:45:52,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:45:52,856 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] [2020-08-19 06:45:52,856 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:45:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:45:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-19 06:45:52,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:45:52,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117471845] [2020-08-19 06:45:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:45:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:45:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:45:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:53,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 06:45:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:45:53,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117471845] [2020-08-19 06:45:53,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:45:53,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:45:53,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640123219] [2020-08-19 06:45:53,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:45:53,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:45:53,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:45:53,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:45:53,146 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-19 06:45:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:45:53,476 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-19 06:45:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:45:53,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 06:45:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:45:53,489 INFO L225 Difference]: With dead ends: 138 [2020-08-19 06:45:53,490 INFO L226 Difference]: Without dead ends: 68 [2020-08-19 06:45:53,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:45:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-19 06:45:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-19 06:45:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-19 06:45:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-19 06:45:53,543 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-19 06:45:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:45:53,543 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-19 06:45:53,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:45:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-19 06:45:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 06:45:53,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:45:53,545 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] [2020-08-19 06:45:53,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:45:53,546 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:45:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:45:53,547 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-19 06:45:53,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:45:53,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908361992] [2020-08-19 06:45:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:45:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:45:53,655 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:45:53,656 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:45:53,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:45:53,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:45:53 BoogieIcfgContainer [2020-08-19 06:45:53,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:45:53,683 INFO L168 Benchmark]: Toolchain (without parser) took 2187.29 ms. Allocated memory was 140.5 MB in the beginning and 236.5 MB in the end (delta: 95.9 MB). Free memory was 102.5 MB in the beginning and 192.4 MB in the end (delta: -89.9 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:53,684 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 06:45:53,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.73 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 178.9 MB in the end (delta: -76.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:53,686 INFO L168 Benchmark]: Boogie Preprocessor took 116.53 ms. Allocated memory is still 203.9 MB. Free memory was 178.9 MB in the beginning and 175.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:53,687 INFO L168 Benchmark]: RCFGBuilder took 660.26 ms. Allocated memory is still 203.9 MB. Free memory was 175.9 MB in the beginning and 140.1 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:53,688 INFO L168 Benchmark]: TraceAbstraction took 920.19 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 139.4 MB in the beginning and 192.4 MB in the end (delta: -53.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:45:53,692 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 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 485.73 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 178.9 MB in the end (delta: -76.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.53 ms. Allocated memory is still 203.9 MB. Free memory was 178.9 MB in the beginning and 175.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 660.26 ms. Allocated memory is still 203.9 MB. Free memory was 175.9 MB in the beginning and 140.1 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 920.19 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 139.4 MB in the beginning and 192.4 MB in the end (delta: -53.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] 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); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 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: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...