/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:40:28,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:40:28,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:40:28,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:40:28,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:40:28,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:40:28,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:40:28,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:40:28,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:40:28,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:40:28,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:40:28,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:40:28,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:40:28,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:40:28,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:40:28,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:40:28,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:40:28,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:40:28,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:40:28,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:40:28,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:40:28,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:40:28,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:40:28,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:40:28,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:40:28,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:40:28,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:40:28,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:40:28,489 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 [2020-08-18 22:40:28,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:40:28,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:40:28,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:40:28,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:40:28,543 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:40:28,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:40:28,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:40:28,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:40:28,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:40:28,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:40:28,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:40:28,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:40:28,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:40:28,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:40:28,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:40:28,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:40:28,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:40:28,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:40:28,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:40:28,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:40:28,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:40:28,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:40:28,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:40:28,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:40:28,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:40:28,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:40:28,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:40:28,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:40:28,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:40:28,555 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:40:28,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:40:28,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:40:28,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:40:28,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:40:28,896 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:40:28,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-08-18 22:40:28,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36c6373b7/a24eaa37b34a4cfbba8c73f950c695d8/FLAGcf8d8dfd0 [2020-08-18 22:40:29,416 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:40:29,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-08-18 22:40:29,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36c6373b7/a24eaa37b34a4cfbba8c73f950c695d8/FLAGcf8d8dfd0 [2020-08-18 22:40:29,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36c6373b7/a24eaa37b34a4cfbba8c73f950c695d8 [2020-08-18 22:40:29,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:40:29,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:40:29,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:29,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:40:29,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:40:29,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f30a912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29, skipping insertion in model container [2020-08-18 22:40:29,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:40:29,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:40:30,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:30,056 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:40:30,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:30,119 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:40:30,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30 WrapperNode [2020-08-18 22:40:30,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:30,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:40:30,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:40:30,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:40:30,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30" (1/1) ... [2020-08-18 22:40:30,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30" (1/1) ... [2020-08-18 22:40:30,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30" (1/1) ... [2020-08-18 22:40:30,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30" (1/1) ... [2020-08-18 22:40:30,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30" (1/1) ... [2020-08-18 22:40:30,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30" (1/1) ... [2020-08-18 22:40:30,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30" (1/1) ... [2020-08-18 22:40:30,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:40:30,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:40:30,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:40:30,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:40:30,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30" (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 [2020-08-18 22:40:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:40:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:40:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 22:40:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-08-18 22:40:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:40:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:40:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 22:40:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-08-18 22:40:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:40:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 22:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 22:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:40:30,923 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:40:30,923 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-08-18 22:40:30,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:30 BoogieIcfgContainer [2020-08-18 22:40:30,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:40:30,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:40:30,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:40:30,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:40:30,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:40:29" (1/3) ... [2020-08-18 22:40:30,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780621e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:30, skipping insertion in model container [2020-08-18 22:40:30,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:30" (2/3) ... [2020-08-18 22:40:30,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780621e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:30, skipping insertion in model container [2020-08-18 22:40:30,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:30" (3/3) ... [2020-08-18 22:40:30,937 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-08-18 22:40:30,947 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:40:30,954 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:40:30,969 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:40:30,995 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:40:30,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:40:30,996 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:40:30,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:40:30,996 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:40:30,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:40:30,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:40:30,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:40:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-08-18 22:40:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 22:40:31,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:31,029 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] [2020-08-18 22:40:31,029 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:31,036 INFO L82 PathProgramCache]: Analyzing trace with hash 204549601, now seen corresponding path program 1 times [2020-08-18 22:40:31,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:31,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480576491] [2020-08-18 22:40:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:31,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:40:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:40:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:31,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:40:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:40:31,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480576491] [2020-08-18 22:40:31,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:40:31,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:40:31,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676389634] [2020-08-18 22:40:31,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:40:31,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:40:31,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:40:31,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:40:31,321 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-08-18 22:40:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:40:31,603 INFO L93 Difference]: Finished difference Result 108 states and 162 transitions. [2020-08-18 22:40:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:40:31,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 22:40:31,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:40:31,617 INFO L225 Difference]: With dead ends: 108 [2020-08-18 22:40:31,617 INFO L226 Difference]: Without dead ends: 54 [2020-08-18 22:40:31,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:40:31,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-18 22:40:31,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-18 22:40:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-18 22:40:31,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-08-18 22:40:31,675 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 25 [2020-08-18 22:40:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:40:31,676 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-08-18 22:40:31,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:40:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-08-18 22:40:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 22:40:31,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:31,679 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] [2020-08-18 22:40:31,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:40:31,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:31,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:31,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482264, now seen corresponding path program 1 times [2020-08-18 22:40:31,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:31,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093382233] [2020-08-18 22:40:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:31,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:40:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:31,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:40:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:31,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:40:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:40:31,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093382233] [2020-08-18 22:40:31,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:40:31,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:40:31,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783217356] [2020-08-18 22:40:31,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:40:31,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:40:31,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:40:31,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:40:31,880 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-08-18 22:40:32,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:40:32,078 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-08-18 22:40:32,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:40:32,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 22:40:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:40:32,081 INFO L225 Difference]: With dead ends: 57 [2020-08-18 22:40:32,081 INFO L226 Difference]: Without dead ends: 54 [2020-08-18 22:40:32,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:40:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-18 22:40:32,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-18 22:40:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-18 22:40:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-08-18 22:40:32,093 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 27 [2020-08-18 22:40:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:40:32,095 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-08-18 22:40:32,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:40:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-08-18 22:40:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-18 22:40:32,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:32,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-08-18 22:40:32,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:40:32,098 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1590755806, now seen corresponding path program 1 times [2020-08-18 22:40:32,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:32,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665128205] [2020-08-18 22:40:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:40:32,209 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:40:32,212 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:40:32,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:40:32,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:40:32 BoogieIcfgContainer [2020-08-18 22:40:32,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:40:32,244 INFO L168 Benchmark]: Toolchain (without parser) took 2450.83 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 103.6 MB in the beginning and 168.5 MB in the end (delta: -65.0 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:32,245 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:40:32,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.19 ms. Allocated memory is still 140.5 MB. Free memory was 103.4 MB in the beginning and 90.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:32,247 INFO L168 Benchmark]: Boogie Preprocessor took 155.37 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 179.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:32,248 INFO L168 Benchmark]: RCFGBuilder took 651.40 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 147.9 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:32,249 INFO L168 Benchmark]: TraceAbstraction took 1310.73 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 147.2 MB in the beginning and 168.5 MB in the end (delta: -21.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:32,253 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.19 ms. Allocated memory is still 140.5 MB. Free memory was 103.4 MB in the beginning and 90.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.37 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 179.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 651.40 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 147.9 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1310.73 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 147.2 MB in the beginning and 168.5 MB in the end (delta: -21.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; [L116] double x = 0.0 / 0.0; [L117] double iptr; [L118] CALL, EXPR modf_double(x, &iptr) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND TRUE j0 < 0 [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; [L118] RET, EXPR modf_double(x, &iptr) [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) [L121] CALL, EXPR isnan_double(iptr) [L15] return x != x; [L121] RET, EXPR isnan_double(iptr) [L121] isnan_double(iptr) && !isnan_double(res) [L121] CALL, EXPR isnan_double(res) [L15] return x != x; [L121] RET, EXPR isnan_double(res) [L121] isnan_double(iptr) && !isnan_double(res) [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 68 SDslu, 35 SDs, 0 SdLazy, 188 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...