/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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:40:21,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:40:21,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:40:21,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 22:40:21,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:40:21,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:40:21,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:40:21,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:40:21,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:40:21,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:40:21,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:40:21,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:40:21,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:40:21,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:40:21,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:40:21,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:40:21,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:40:21,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:40:21,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:40:21,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:40:21,972 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 22:40:22,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:40:22,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:40:22,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:40:22,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:40:22,023 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:40:22,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:40:22,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:40:22,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:40:22,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:40:22,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:40:22,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:40:22,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:40:22,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:40:22,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:40:22,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:40:22,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:40:22,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:40:22,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:40:22,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:40:22,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:40:22,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:40:22,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:40:22,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:40:22,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:40:22,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:40:22,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:40:22,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:40:22,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:40:22,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:40:22,031 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 22:40:22,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:40:22,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:40:22,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:40:22,349 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:40:22,349 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:40:22,351 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-18 22:40:22,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52023d77e/d7d6ec8aedaa44abb64d7c7f865d3640/FLAG83e0efd51 [2020-08-18 22:40:22,886 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:40:22,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-18 22:40:22,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52023d77e/d7d6ec8aedaa44abb64d7c7f865d3640/FLAG83e0efd51 [2020-08-18 22:40:23,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52023d77e/d7d6ec8aedaa44abb64d7c7f865d3640 [2020-08-18 22:40:23,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:40:23,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:40:23,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:23,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:40:23,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:40:23,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:23" (1/1) ... [2020-08-18 22:40:23,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6833dace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23, skipping insertion in model container [2020-08-18 22:40:23,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:23" (1/1) ... [2020-08-18 22:40:23,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:40:23,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:40:23,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:23,516 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:40:23,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:23,661 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:40:23,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23 WrapperNode [2020-08-18 22:40:23,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:23,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:40:23,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:40:23,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:40:23,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23" (1/1) ... [2020-08-18 22:40:23,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23" (1/1) ... [2020-08-18 22:40:23,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23" (1/1) ... [2020-08-18 22:40:23,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23" (1/1) ... [2020-08-18 22:40:23,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23" (1/1) ... [2020-08-18 22:40:23,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23" (1/1) ... [2020-08-18 22:40:23,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23" (1/1) ... [2020-08-18 22:40:23,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:40:23,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:40:23,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:40:23,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:40:23,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23" (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 22:40:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:40:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:40:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-18 22:40:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 22:40:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:40:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:40:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-18 22:40:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:40:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 22:40:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:40:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:40:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:40:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 22:40:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 22:40:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:40:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:40:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:40:24,124 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:40:24,125 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 22:40:24,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:24 BoogieIcfgContainer [2020-08-18 22:40:24,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:40:24,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:40:24,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:40:24,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:40:24,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:40:23" (1/3) ... [2020-08-18 22:40:24,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32254297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:24, skipping insertion in model container [2020-08-18 22:40:24,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:23" (2/3) ... [2020-08-18 22:40:24,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32254297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:24, skipping insertion in model container [2020-08-18 22:40:24,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:24" (3/3) ... [2020-08-18 22:40:24,139 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-18 22:40:24,152 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:40:24,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:40:24,175 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:40:24,202 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:40:24,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:40:24,203 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:40:24,203 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:40:24,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:40:24,203 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:40:24,204 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:40:24,204 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:40:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-18 22:40:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 22:40:24,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:24,232 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 22:40:24,232 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:24,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:24,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-18 22:40:24,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:24,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398458705] [2020-08-18 22:40:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:40:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:24,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:40:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:24,469 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 22:40:24,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398458705] [2020-08-18 22:40:24,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:40:24,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:40:24,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888944138] [2020-08-18 22:40:24,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:40:24,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:40:24,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:40:24,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:40:24,495 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-18 22:40:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:40:24,715 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-18 22:40:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:40:24,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 22:40:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:40:24,727 INFO L225 Difference]: With dead ends: 94 [2020-08-18 22:40:24,727 INFO L226 Difference]: Without dead ends: 47 [2020-08-18 22:40:24,731 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 22:40:24,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-18 22:40:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-18 22:40:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-18 22:40:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-18 22:40:24,774 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-18 22:40:24,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:40:24,775 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-18 22:40:24,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:40:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-18 22:40:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 22:40:24,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:24,777 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 22:40:24,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:40:24,777 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:24,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-18 22:40:24,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:24,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525753078] [2020-08-18 22:40:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:40:24,871 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:40:24,872 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:40:24,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:40:24,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:40:24 BoogieIcfgContainer [2020-08-18 22:40:24,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:40:24,895 INFO L168 Benchmark]: Toolchain (without parser) took 1601.79 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.1 MB in the beginning and 105.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:24,897 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 22:40:24,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.12 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 180.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:24,899 INFO L168 Benchmark]: Boogie Preprocessor took 48.47 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 177.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:24,900 INFO L168 Benchmark]: RCFGBuilder took 419.46 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 153.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:24,900 INFO L168 Benchmark]: TraceAbstraction took 761.06 ms. Allocated memory is still 202.4 MB. Free memory was 153.6 MB in the beginning and 105.1 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:24,905 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.12 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 180.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.47 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 177.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.46 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 153.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 761.06 ms. Allocated memory is still 202.4 MB. Free memory was 153.6 MB in the beginning and 105.1 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 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, 0.1s 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...