/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:26:54,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:26:54,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:26:54,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:26:54,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:26:54,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:26:54,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:26:54,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:26:54,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:26:54,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:26:54,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:26:54,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:26:54,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:26:54,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:26:54,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:26:54,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:26:54,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:26:54,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:26:54,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:26:54,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:26:54,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:26:54,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:26:54,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:26:54,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:26:54,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 19:26:54,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:26:54,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:26:54,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:26:54,466 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 19:26:54,513 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:26:54,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:26:54,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:26:54,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:26:54,516 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:26:54,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:26:54,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:26:54,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:26:54,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:26:54,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:26:54,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:26:54,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:26:54,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:26:54,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:26:54,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:26:54,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:26:54,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:26:54,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:26:54,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:26:54,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:26:54,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:26:54,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:26:54,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:26:54,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:26:54,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:26:54,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:26:54,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:26:54,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:26:54,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:26:54,523 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:26:54,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:26:54,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:26:54,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:26:54,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:26:54,893 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:26:54,894 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-18 19:26:54,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e00e57a8/93120b2fd31c4086a31021696dfba05e/FLAG28021587b [2020-08-18 19:26:55,432 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:26:55,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-18 19:26:55,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e00e57a8/93120b2fd31c4086a31021696dfba05e/FLAG28021587b [2020-08-18 19:26:55,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e00e57a8/93120b2fd31c4086a31021696dfba05e [2020-08-18 19:26:55,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:26:55,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:26:55,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:26:55,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:26:55,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:26:55,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:26:55" (1/1) ... [2020-08-18 19:26:55,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3e4b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:55, skipping insertion in model container [2020-08-18 19:26:55,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:26:55" (1/1) ... [2020-08-18 19:26:55,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:26:55,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:26:56,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:26:56,115 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:26:56,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:26:56,251 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:26:56,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56 WrapperNode [2020-08-18 19:26:56,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:26:56,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:26:56,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:26:56,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:26:56,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56" (1/1) ... [2020-08-18 19:26:56,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56" (1/1) ... [2020-08-18 19:26:56,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56" (1/1) ... [2020-08-18 19:26:56,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56" (1/1) ... [2020-08-18 19:26:56,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56" (1/1) ... [2020-08-18 19:26:56,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56" (1/1) ... [2020-08-18 19:26:56,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56" (1/1) ... [2020-08-18 19:26:56,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:26:56,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:26:56,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:26:56,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:26:56,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56" (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 19:26:56,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:26:56,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:26:56,357 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-18 19:26:56,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 19:26:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:26:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:26:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-18 19:26:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:26:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 19:26:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:26:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:26:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:26:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 19:26:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 19:26:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:26:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:26:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:26:56,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:26:56,731 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 19:26:56,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:26:56 BoogieIcfgContainer [2020-08-18 19:26:56,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:26:56,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:26:56,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:26:56,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:26:56,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:26:55" (1/3) ... [2020-08-18 19:26:56,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35099c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:26:56, skipping insertion in model container [2020-08-18 19:26:56,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:26:56" (2/3) ... [2020-08-18 19:26:56,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35099c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:26:56, skipping insertion in model container [2020-08-18 19:26:56,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:26:56" (3/3) ... [2020-08-18 19:26:56,746 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-18 19:26:56,759 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:26:56,767 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:26:56,783 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:26:56,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:26:56,818 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:26:56,818 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:26:56,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:26:56,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:26:56,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:26:56,819 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:26:56,819 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:26:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-18 19:26:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 19:26:56,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:56,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:56,854 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:56,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:56,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-18 19:26:56,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:56,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107503635] [2020-08-18 19:26:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:57,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:57,098 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 19:26:57,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107503635] [2020-08-18 19:26:57,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:26:57,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:26:57,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202227599] [2020-08-18 19:26:57,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:26:57,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:57,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:26:57,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:26:57,126 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-18 19:26:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:57,380 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-18 19:26:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:26:57,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 19:26:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:57,394 INFO L225 Difference]: With dead ends: 94 [2020-08-18 19:26:57,394 INFO L226 Difference]: Without dead ends: 47 [2020-08-18 19:26:57,398 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 [2020-08-18 19:26:57,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-18 19:26:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-18 19:26:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-18 19:26:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-18 19:26:57,446 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-18 19:26:57,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:57,447 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-18 19:26:57,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:26:57,447 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-18 19:26:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 19:26:57,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:57,449 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] [2020-08-18 19:26:57,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:26:57,450 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:57,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:57,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-18 19:26:57,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:57,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009655644] [2020-08-18 19:26:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:26:57,501 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:26:57,502 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:26:57,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:26:57,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:26:57 BoogieIcfgContainer [2020-08-18 19:26:57,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:26:57,529 INFO L168 Benchmark]: Toolchain (without parser) took 1696.15 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.9 MB in the beginning and 105.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. [2020-08-18 19:26:57,530 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 19:26:57,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.51 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.5 MB in the beginning and 180.8 MB in the end (delta: -77.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-18 19:26:57,532 INFO L168 Benchmark]: Boogie Preprocessor took 45.19 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 19:26:57,533 INFO L168 Benchmark]: RCFGBuilder took 437.55 ms. Allocated memory is still 202.9 MB. Free memory was 178.2 MB in the beginning and 154.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:26:57,534 INFO L168 Benchmark]: TraceAbstraction took 788.56 ms. Allocated memory is still 202.9 MB. Free memory was 154.1 MB in the beginning and 105.2 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 7.1 GB. [2020-08-18 19:26:57,538 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 419.51 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.5 MB in the beginning and 180.8 MB in the end (delta: -77.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.19 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.55 ms. Allocated memory is still 202.9 MB. Free memory was 178.2 MB in the beginning and 154.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 788.56 ms. Allocated memory is still 202.9 MB. Free memory was 154.1 MB in the beginning and 105.2 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...