/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:16:35,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:35,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:35,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:35,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:35,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:35,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:35,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:35,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:35,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:35,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:35,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:35,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:35,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:35,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:35,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:35,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:35,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:35,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:35,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:35,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:35,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:35,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:35,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:35,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:16:35,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:16:35,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:16:35,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:16:35,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:16:35,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:16:35,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:16:35,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:16:35,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:16:35,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:35,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:35,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:35,273 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 [2020-09-21 10:16:35,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:35,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:35,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:35,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:35,319 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:35,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:35,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:35,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:35,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:35,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:35,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:35,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:35,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:35,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:35,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:35,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:35,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:35,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:35,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:35,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:35,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:35,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:35,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:35,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:35,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:35,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:35,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:35,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:35,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:35,326 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 -> false [2020-09-21 10:16:35,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:35,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:35,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:35,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:35,864 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:35,865 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-09-21 10:16:35,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42bfe6c17/f93a6d4ed6034ea19d52d8970a55512e/FLAG28d8372fb [2020-09-21 10:16:36,516 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:36,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-09-21 10:16:36,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42bfe6c17/f93a6d4ed6034ea19d52d8970a55512e/FLAG28d8372fb [2020-09-21 10:16:36,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42bfe6c17/f93a6d4ed6034ea19d52d8970a55512e [2020-09-21 10:16:36,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:36,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:36,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:36,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:36,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:36,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:36" (1/1) ... [2020-09-21 10:16:36,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d9e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:36, skipping insertion in model container [2020-09-21 10:16:36,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:36" (1/1) ... [2020-09-21 10:16:36,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:36,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:37,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:37,141 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:37,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:37,211 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:37,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37 WrapperNode [2020-09-21 10:16:37,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:37,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:37,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:37,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:37,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37" (1/1) ... [2020-09-21 10:16:37,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37" (1/1) ... [2020-09-21 10:16:37,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37" (1/1) ... [2020-09-21 10:16:37,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37" (1/1) ... [2020-09-21 10:16:37,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37" (1/1) ... [2020-09-21 10:16:37,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37" (1/1) ... [2020-09-21 10:16:37,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37" (1/1) ... [2020-09-21 10:16:37,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:37,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:37,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:37,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:37,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37" (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 [2020-09-21 10:16:37,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:37,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:37,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 10:16:37,435 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-09-21 10:16:37,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-21 10:16:37,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 10:16:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-09-21 10:16:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-21 10:16:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:37,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:37,831 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 10:16:37,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:37 BoogieIcfgContainer [2020-09-21 10:16:37,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:37,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:37,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:37,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:37,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:36" (1/3) ... [2020-09-21 10:16:37,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676fc2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:37, skipping insertion in model container [2020-09-21 10:16:37,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:37" (2/3) ... [2020-09-21 10:16:37,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676fc2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:37, skipping insertion in model container [2020-09-21 10:16:37,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:37" (3/3) ... [2020-09-21 10:16:37,846 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a.c [2020-09-21 10:16:37,859 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:37,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:37,917 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:37,946 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:37,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:37,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:37,946 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:37,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:37,946 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:37,946 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:37,947 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-21 10:16:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 10:16:37,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:37,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:37,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:37,986 INFO L82 PathProgramCache]: Analyzing trace with hash -597726452, now seen corresponding path program 1 times [2020-09-21 10:16:37,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:37,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423585322] [2020-09-21 10:16:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:38,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:38,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:16:38,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423585322] [2020-09-21 10:16:38,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:38,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:38,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912900814] [2020-09-21 10:16:38,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:38,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:38,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:38,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:38,269 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-09-21 10:16:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:38,551 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2020-09-21 10:16:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:16:38,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 10:16:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:38,568 INFO L225 Difference]: With dead ends: 78 [2020-09-21 10:16:38,568 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 10:16:38,574 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 [2020-09-21 10:16:38,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 10:16:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 10:16:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 10:16:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-09-21 10:16:38,632 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2020-09-21 10:16:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:38,633 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-09-21 10:16:38,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-09-21 10:16:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 10:16:38,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:38,635 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] [2020-09-21 10:16:38,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:38,636 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:38,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:38,636 INFO L82 PathProgramCache]: Analyzing trace with hash -524929330, now seen corresponding path program 1 times [2020-09-21 10:16:38,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:38,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934345503] [2020-09-21 10:16:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:38,704 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:38,704 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:38,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:38,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:38 BoogieIcfgContainer [2020-09-21 10:16:38,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:38,754 INFO L168 Benchmark]: Toolchain (without parser) took 1909.19 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 102.4 MB in the beginning and 112.5 MB in the end (delta: -10.1 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:38,755 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:16:38,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.86 ms. Allocated memory is still 146.3 MB. Free memory was 101.7 MB in the beginning and 90.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:38,757 INFO L168 Benchmark]: Boogie Preprocessor took 147.73 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 90.2 MB in the beginning and 178.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:38,758 INFO L168 Benchmark]: RCFGBuilder took 475.22 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 156.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:38,759 INFO L168 Benchmark]: TraceAbstraction took 912.63 ms. Allocated memory is still 201.9 MB. Free memory was 155.9 MB in the beginning and 112.5 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:38,763 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 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.86 ms. Allocated memory is still 146.3 MB. Free memory was 101.7 MB in the beginning and 90.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.73 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 90.2 MB in the beginning and 178.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 475.22 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 156.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 912.63 ms. Allocated memory is still 201.9 MB. Free memory was 155.9 MB in the beginning and 112.5 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 90, overapproximation of shiftRight at line 34, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L86] double x = 0.0; [L87] CALL, EXPR round_double(x) [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L27] COND TRUE exponent_less_1023 < 20 [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; [L87] RET, EXPR round_double(x) [L87] double res = round_double(x); [L90] EXPR res == 0.0 && __signbit_double(res) == 0 [L90] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 40 SDslu, 5 SDs, 0 SdLazy, 50 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=43occurred 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, 702 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...