/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=0.2 -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 0.1.25-5644d1e-m [2020-08-19 04:20:16,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:20:16,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:20:16,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:20:16,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:20:16,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:20:16,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:20:16,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:20:16,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:20:16,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:20:16,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:20:16,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:20:16,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:20:16,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:20:16,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:20:16,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:20:16,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:20:16,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:20:16,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:20:16,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:20:16,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:20:16,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:20:16,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:20:16,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:20:16,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:20:16,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:20:16,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:20:16,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:20:16,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:20:16,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:20:16,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:20:16,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:20:16,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:20:16,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:20:16,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:20:16,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:20:16,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:20:16,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:20:16,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:20:16,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:20:16,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:20:16,180 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 04:20:16,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:20:16,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:20:16,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:20:16,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:20:16,205 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:20:16,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:20:16,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:20:16,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:20:16,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:20:16,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:20:16,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:20:16,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:20:16,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:20:16,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:20:16,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:20:16,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:20:16,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:20:16,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:20:16,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:20:16,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:20:16,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:20:16,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:16,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:20:16,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:20:16,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:20:16,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:20:16,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:20:16,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:20:16,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:20:16,210 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=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:20:16,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:20:16,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:20:16,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:20:16,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:20:16,521 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:20:16,522 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-19 04:20:16,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3464e258/69806e1dbde5436f8846d0b12cf1326f/FLAG2ed73c030 [2020-08-19 04:20:17,020 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:20:17,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-19 04:20:17,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3464e258/69806e1dbde5436f8846d0b12cf1326f/FLAG2ed73c030 [2020-08-19 04:20:17,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3464e258/69806e1dbde5436f8846d0b12cf1326f [2020-08-19 04:20:17,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:20:17,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:20:17,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:17,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:20:17,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:20:17,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:17" (1/1) ... [2020-08-19 04:20:17,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12eafce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17, skipping insertion in model container [2020-08-19 04:20:17,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:17" (1/1) ... [2020-08-19 04:20:17,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:20:17,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:20:17,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:17,770 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:20:17,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:17,998 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:20:17,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17 WrapperNode [2020-08-19 04:20:17,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:17,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:20:17,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:20:18,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:20:18,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17" (1/1) ... [2020-08-19 04:20:18,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17" (1/1) ... [2020-08-19 04:20:18,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17" (1/1) ... [2020-08-19 04:20:18,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17" (1/1) ... [2020-08-19 04:20:18,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17" (1/1) ... [2020-08-19 04:20:18,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17" (1/1) ... [2020-08-19 04:20:18,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17" (1/1) ... [2020-08-19 04:20:18,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:20:18,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:20:18,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:20:18,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:20:18,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17" (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 04:20:18,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:20:18,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:20:18,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 04:20:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-19 04:20:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-19 04:20:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:20:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:20:18,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 04:20:18,165 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 04:20:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-19 04:20:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:20:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 04:20:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:20:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:20:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 04:20:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:20:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-19 04:20:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:20:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:20:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 04:20:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:20:18,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:20:18,807 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-19 04:20:18,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:18 BoogieIcfgContainer [2020-08-19 04:20:18,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:20:18,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:20:18,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:20:18,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:20:18,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:20:17" (1/3) ... [2020-08-19 04:20:18,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41278ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:18, skipping insertion in model container [2020-08-19 04:20:18,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:17" (2/3) ... [2020-08-19 04:20:18,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41278ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:18, skipping insertion in model container [2020-08-19 04:20:18,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:18" (3/3) ... [2020-08-19 04:20:18,821 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-19 04:20:18,831 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:20:18,839 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:20:18,853 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:20:18,876 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:20:18,877 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:20:18,877 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:20:18,877 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:20:18,877 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:20:18,877 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:20:18,877 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:20:18,878 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:20:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-19 04:20:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:20:18,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:18,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:18,906 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-19 04:20:18,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:18,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614316485] [2020-08-19 04:20:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:19,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:20:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:19,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:20:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:19,155 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 04:20:19,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614316485] [2020-08-19 04:20:19,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:20:19,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:20:19,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908346340] [2020-08-19 04:20:19,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:20:19,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:20:19,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:20:19,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:20:19,232 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-19 04:20:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:20:19,622 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-19 04:20:19,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:20:19,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 04:20:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:20:19,635 INFO L225 Difference]: With dead ends: 142 [2020-08-19 04:20:19,635 INFO L226 Difference]: Without dead ends: 69 [2020-08-19 04:20:19,639 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 [2020-08-19 04:20:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-19 04:20:19,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-19 04:20:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-19 04:20:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-19 04:20:19,687 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-19 04:20:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:20:19,688 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-19 04:20:19,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:20:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-19 04:20:19,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 04:20:19,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:19,690 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] [2020-08-19 04:20:19,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:20:19,691 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:19,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:19,691 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-19 04:20:19,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:19,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271904184] [2020-08-19 04:20:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:20:19,776 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:20:19,777 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:20:19,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:20:19,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:20:19 BoogieIcfgContainer [2020-08-19 04:20:19,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:20:19,827 INFO L168 Benchmark]: Toolchain (without parser) took 2405.23 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 103.1 MB in the beginning and 192.2 MB in the end (delta: -89.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:19,829 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:20:19,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.87 ms. Allocated memory was 140.5 MB in the beginning and 206.0 MB in the end (delta: 65.5 MB). Free memory was 102.9 MB in the beginning and 181.2 MB in the end (delta: -78.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:19,831 INFO L168 Benchmark]: Boogie Preprocessor took 71.40 ms. Allocated memory is still 206.0 MB. Free memory was 181.2 MB in the beginning and 178.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:19,837 INFO L168 Benchmark]: RCFGBuilder took 740.72 ms. Allocated memory is still 206.0 MB. Free memory was 178.6 MB in the beginning and 141.8 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:19,838 INFO L168 Benchmark]: TraceAbstraction took 1009.08 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 141.1 MB in the beginning and 192.2 MB in the end (delta: -51.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:20:19,844 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 576.87 ms. Allocated memory was 140.5 MB in the beginning and 206.0 MB in the end (delta: 65.5 MB). Free memory was 102.9 MB in the beginning and 181.2 MB in the end (delta: -78.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.40 ms. Allocated memory is still 206.0 MB. Free memory was 181.2 MB in the beginning and 178.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 740.72 ms. Allocated memory is still 206.0 MB. Free memory was 178.6 MB in the beginning and 141.8 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1009.08 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 141.1 MB in the beginning and 192.2 MB in the end (delta: -51.1 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, 0.1s 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...