/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=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:43:12,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:43:12,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:43:12,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:43:12,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:43:12,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:43:12,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:43:12,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:43:12,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:43:12,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:43:12,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:43:12,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:43:12,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:43:12,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:43:12,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:43:12,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:43:12,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:43:12,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:43:12,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:43:12,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:43:12,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:43:12,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:43:12,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:43:12,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:43:12,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:43:12,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:43:12,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:43:12,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:43:12,462 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 02:43:12,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:43:12,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:43:12,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:43:12,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:43:12,505 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:43:12,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:43:12,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:43:12,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:43:12,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:43:12,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:43:12,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:43:12,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:43:12,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:43:12,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:43:12,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:43:12,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:43:12,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:43:12,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:43:12,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:43:12,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:43:12,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:43:12,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:43:12,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:43:12,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:43:12,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:43:12,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:43:12,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:43:12,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:43:12,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:43:12,510 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=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:43:12,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:43:12,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:43:12,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:43:12,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:43:12,856 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:43:12,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-19 02:43:12,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d49a8815/adc496b967ab42f194decd557b22cfcd/FLAG068a29649 [2020-08-19 02:43:13,393 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:43:13,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-19 02:43:13,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d49a8815/adc496b967ab42f194decd557b22cfcd/FLAG068a29649 [2020-08-19 02:43:13,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d49a8815/adc496b967ab42f194decd557b22cfcd [2020-08-19 02:43:13,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:43:13,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:43:13,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:43:13,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:43:13,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:43:13,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:43:13" (1/1) ... [2020-08-19 02:43:13,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522d3de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:13, skipping insertion in model container [2020-08-19 02:43:13,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:43:13" (1/1) ... [2020-08-19 02:43:13,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:43:13,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:43:13,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:43:13,991 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:43:14,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:43:14,201 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:43:14,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14 WrapperNode [2020-08-19 02:43:14,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:43:14,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:43:14,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:43:14,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:43:14,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14" (1/1) ... [2020-08-19 02:43:14,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14" (1/1) ... [2020-08-19 02:43:14,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14" (1/1) ... [2020-08-19 02:43:14,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14" (1/1) ... [2020-08-19 02:43:14,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14" (1/1) ... [2020-08-19 02:43:14,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14" (1/1) ... [2020-08-19 02:43:14,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14" (1/1) ... [2020-08-19 02:43:14,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:43:14,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:43:14,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:43:14,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:43:14,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14" (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 02:43:14,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:43:14,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:43:14,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 02:43:14,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-19 02:43:14,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:43:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:43:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 02:43:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-19 02:43:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:43:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 02:43:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:43:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:43:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:43:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 02:43:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:43:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:43:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:43:14,790 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:43:14,790 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 02:43:14,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:43:14 BoogieIcfgContainer [2020-08-19 02:43:14,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:43:14,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:43:14,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:43:14,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:43:14,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:43:13" (1/3) ... [2020-08-19 02:43:14,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592480a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:43:14, skipping insertion in model container [2020-08-19 02:43:14,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:14" (2/3) ... [2020-08-19 02:43:14,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592480a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:43:14, skipping insertion in model container [2020-08-19 02:43:14,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:43:14" (3/3) ... [2020-08-19 02:43:14,803 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-19 02:43:14,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:43:14,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:43:14,836 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:43:14,862 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:43:14,862 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:43:14,862 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:43:14,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:43:14,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:43:14,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:43:14,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:43:14,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:43:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-19 02:43:14,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 02:43:14,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:14,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:14,892 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:14,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-19 02:43:14,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:14,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796864110] [2020-08-19 02:43:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:15,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:43:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:15,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:43:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:15,162 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 02:43:15,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796864110] [2020-08-19 02:43:15,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:43:15,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:43:15,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9246485] [2020-08-19 02:43:15,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:43:15,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:15,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:43:15,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:43:15,187 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-19 02:43:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:15,454 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-19 02:43:15,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:43:15,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 02:43:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:15,467 INFO L225 Difference]: With dead ends: 86 [2020-08-19 02:43:15,467 INFO L226 Difference]: Without dead ends: 43 [2020-08-19 02:43:15,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:43:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-19 02:43:15,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-19 02:43:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 02:43:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-19 02:43:15,515 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-19 02:43:15,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:15,515 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-19 02:43:15,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:43:15,516 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-19 02:43:15,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 02:43:15,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:15,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:15,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:43:15,518 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:15,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-19 02:43:15,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:15,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63749058] [2020-08-19 02:43:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:43:15,580 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:43:15,582 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:43:15,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:43:15,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:43:15 BoogieIcfgContainer [2020-08-19 02:43:15,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:43:15,629 INFO L168 Benchmark]: Toolchain (without parser) took 1870.58 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 102.5 MB in the beginning and 111.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:15,634 INFO L168 Benchmark]: CDTParser took 0.22 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 02:43:15,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.23 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 102.3 MB in the beginning and 183.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:15,639 INFO L168 Benchmark]: Boogie Preprocessor took 67.13 ms. Allocated memory is still 206.0 MB. Free memory was 183.8 MB in the beginning and 181.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:15,640 INFO L168 Benchmark]: RCFGBuilder took 524.95 ms. Allocated memory is still 206.0 MB. Free memory was 181.8 MB in the beginning and 159.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:15,643 INFO L168 Benchmark]: TraceAbstraction took 828.27 ms. Allocated memory is still 206.0 MB. Free memory was 159.3 MB in the beginning and 111.5 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:15,649 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 443.23 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 102.3 MB in the beginning and 183.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.13 ms. Allocated memory is still 206.0 MB. Free memory was 183.8 MB in the beginning and 181.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 524.95 ms. Allocated memory is still 206.0 MB. Free memory was 181.8 MB in the beginning and 159.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 828.27 ms. Allocated memory is still 206.0 MB. Free memory was 159.3 MB in the beginning and 111.5 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...