/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -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 [2020-08-19 01:54:44,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:54:44,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:54:44,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:54:44,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:54:44,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:54:44,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:54:44,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:54:44,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:54:44,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:54:44,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:54:44,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:54:44,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:54:44,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:54:44,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:54:44,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:54:44,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:54:44,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:54:44,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:54:44,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:54:44,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:54:44,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:54:44,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:54:44,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:54:44,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:54:44,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:54:44,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:54:44,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:54:44,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:54:44,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:54:44,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:54:44,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:54:44,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:54:44,291 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:54:44,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:54:44,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:54:44,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:54:44,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:54:44,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:54:44,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:54:44,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:54:44,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:54:44,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:54:44,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:54:44,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:54:44,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:54:44,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:54:44,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:54:44,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:54:44,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:54:44,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:54:44,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:54:44,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:54:44,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:54:44,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:54:44,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:54:44,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:54:44,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:54:44,296 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:54:44,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:54:44,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:54:44,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:54:44,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:54:44,616 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:54:44,617 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-19 01:54:44,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad14dc427/5e8473c630d04dd78c4bf7435076c65c/FLAG2c000b09d [2020-08-19 01:54:45,201 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:54:45,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-19 01:54:45,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad14dc427/5e8473c630d04dd78c4bf7435076c65c/FLAG2c000b09d [2020-08-19 01:54:45,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad14dc427/5e8473c630d04dd78c4bf7435076c65c [2020-08-19 01:54:45,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:54:45,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:54:45,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:45,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:54:45,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:54:45,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:45" (1/1) ... [2020-08-19 01:54:45,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76be6b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:45, skipping insertion in model container [2020-08-19 01:54:45,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:45" (1/1) ... [2020-08-19 01:54:45,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:54:45,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:54:45,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:45,903 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:54:45,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:46,044 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:54:46,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46 WrapperNode [2020-08-19 01:54:46,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:46,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:54:46,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:54:46,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:54:46,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46" (1/1) ... [2020-08-19 01:54:46,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46" (1/1) ... [2020-08-19 01:54:46,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46" (1/1) ... [2020-08-19 01:54:46,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46" (1/1) ... [2020-08-19 01:54:46,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46" (1/1) ... [2020-08-19 01:54:46,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46" (1/1) ... [2020-08-19 01:54:46,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46" (1/1) ... [2020-08-19 01:54:46,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:54:46,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:54:46,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:54:46,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:54:46,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:54:46,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:54:46,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:54:46,155 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-19 01:54:46,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-19 01:54:46,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:54:46,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:54:46,155 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-19 01:54:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:54:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 01:54:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:54:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:54:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:54:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 01:54:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-19 01:54:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:54:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:54:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:54:46,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:54:46,513 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-19 01:54:46,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:46 BoogieIcfgContainer [2020-08-19 01:54:46,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:54:46,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:54:46,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:54:46,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:54:46,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:54:45" (1/3) ... [2020-08-19 01:54:46,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69efd800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:46, skipping insertion in model container [2020-08-19 01:54:46,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:46" (2/3) ... [2020-08-19 01:54:46,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69efd800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:46, skipping insertion in model container [2020-08-19 01:54:46,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:46" (3/3) ... [2020-08-19 01:54:46,535 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-19 01:54:46,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:54:46,559 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:54:46,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:54:46,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:54:46,608 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:54:46,609 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:54:46,609 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:54:46,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:54:46,609 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:54:46,609 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:54:46,609 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:54:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-19 01:54:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:54:46,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:46,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:46,641 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:46,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:46,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-19 01:54:46,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:46,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307296488] [2020-08-19 01:54:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:46,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:54:46,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307296488] [2020-08-19 01:54:46,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:54:46,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:54:46,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365345856] [2020-08-19 01:54:46,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:54:46,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:46,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:54:46,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:54:46,940 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-19 01:54:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:47,224 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-19 01:54:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:54:47,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 01:54:47,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:47,238 INFO L225 Difference]: With dead ends: 94 [2020-08-19 01:54:47,239 INFO L226 Difference]: Without dead ends: 47 [2020-08-19 01:54:47,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:54:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-19 01:54:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-19 01:54:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-19 01:54:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-19 01:54:47,294 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-19 01:54:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:47,295 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-19 01:54:47,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:54:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-19 01:54:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:54:47,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:47,297 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] [2020-08-19 01:54:47,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:54:47,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:47,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:47,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-19 01:54:47,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:47,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635300660] [2020-08-19 01:54:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:54:47,365 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:54:47,367 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:54:47,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:54:47,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:54:47 BoogieIcfgContainer [2020-08-19 01:54:47,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:54:47,429 INFO L168 Benchmark]: Toolchain (without parser) took 1802.99 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.9 MB in the beginning and 103.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:47,430 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-19 01:54:47,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.68 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.7 MB in the beginning and 180.0 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:47,437 INFO L168 Benchmark]: Boogie Preprocessor took 46.44 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 177.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:47,440 INFO L168 Benchmark]: RCFGBuilder took 425.50 ms. Allocated memory is still 201.3 MB. Free memory was 177.6 MB in the beginning and 152.8 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:47,441 INFO L168 Benchmark]: TraceAbstraction took 894.52 ms. Allocated memory is still 201.3 MB. Free memory was 152.8 MB in the beginning and 103.9 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:47,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.68 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.7 MB in the beginning and 180.0 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.44 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 177.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.50 ms. Allocated memory is still 201.3 MB. Free memory was 177.6 MB in the beginning and 152.8 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 894.52 ms. Allocated memory is still 201.3 MB. Free memory was 152.8 MB in the beginning and 103.9 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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...