/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=0.2 -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 [2020-08-18 23:28:47,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:28:47,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:28:47,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:28:47,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:28:47,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:28:47,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:28:47,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:28:47,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:28:47,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:28:47,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:28:47,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:28:47,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:28:47,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:28:47,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:28:47,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:28:47,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:28:47,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:28:47,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:28:47,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:28:47,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:28:47,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:28:47,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:28:47,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:28:47,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:28:47,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:28:47,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:28:47,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:28:47,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:28:47,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:28:47,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:28:47,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:28:47,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:28:47,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:28:47,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:28:47,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:28:47,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:28:47,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:28:47,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:28:47,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:28:47,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:28:47,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:28:47,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:28:47,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:28:47,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:28:47,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:28:47,753 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:28:47,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:28:47,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:28:47,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:28:47,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:28:47,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:28:47,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:28:47,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:28:47,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:28:47,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:28:47,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:28:47,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:28:47,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:28:47,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:28:47,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:28:47,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:28:47,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:28:47,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:28:47,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:28:47,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:28:47,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:28:47,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:28:47,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:28:47,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:28:47,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:28:47,759 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=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:28:48,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:28:48,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:28:48,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:28:48,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:28:48,082 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:28:48,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 23:28:48,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e14735f/7be375234ca5430b9ea1ddba2af652d4/FLAG756baea55 [2020-08-18 23:28:48,627 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:28:48,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 23:28:48,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e14735f/7be375234ca5430b9ea1ddba2af652d4/FLAG756baea55 [2020-08-18 23:28:48,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e14735f/7be375234ca5430b9ea1ddba2af652d4 [2020-08-18 23:28:48,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:28:48,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:28:48,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:28:48,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:28:48,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:28:48,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:28:48" (1/1) ... [2020-08-18 23:28:49,003 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 18.08 11:28:49, skipping insertion in model container [2020-08-18 23:28:49,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:28:48" (1/1) ... [2020-08-18 23:28:49,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:28:49,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:28:49,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:28:49,264 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:28:49,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:28:49,317 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:28:49,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49 WrapperNode [2020-08-18 23:28:49,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:28:49,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:28:49,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:28:49,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:28:49,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49" (1/1) ... [2020-08-18 23:28:49,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49" (1/1) ... [2020-08-18 23:28:49,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49" (1/1) ... [2020-08-18 23:28:49,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49" (1/1) ... [2020-08-18 23:28:49,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49" (1/1) ... [2020-08-18 23:28:49,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49" (1/1) ... [2020-08-18 23:28:49,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49" (1/1) ... [2020-08-18 23:28:49,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:28:49,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:28:49,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:28:49,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:28:49,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:28:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:28:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:28:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 23:28:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 23:28:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:28:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:28:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 23:28:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 23:28:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:28:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 23:28:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:28:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:28:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:28:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 23:28:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:28:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:28:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:28:49,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:28:49,968 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 23:28:49,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:28:49 BoogieIcfgContainer [2020-08-18 23:28:49,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:28:49,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:28:49,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:28:49,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:28:49,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:28:48" (1/3) ... [2020-08-18 23:28:49,987 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 18.08 11:28:49, skipping insertion in model container [2020-08-18 23:28:49,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:49" (2/3) ... [2020-08-18 23:28:49,988 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 18.08 11:28:49, skipping insertion in model container [2020-08-18 23:28:49,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:28:49" (3/3) ... [2020-08-18 23:28:49,990 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-18 23:28:50,001 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:28:50,007 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:28:50,020 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:28:50,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:28:50,042 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:28:50,043 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:28:50,043 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:28:50,043 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:28:50,043 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:28:50,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:28:50,044 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:28:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 23:28:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 23:28:50,068 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:28:50,069 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] [2020-08-18 23:28:50,069 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:28:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:28:50,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-18 23:28:50,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:28:50,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796864110] [2020-08-18 23:28:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:28:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:50,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:28:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:28:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:28:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:28:50,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796864110] [2020-08-18 23:28:50,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:28:50,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:28:50,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9246485] [2020-08-18 23:28:50,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:28:50,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:28:50,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:28:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:28:50,425 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 23:28:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:28:50,706 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 23:28:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:28:50,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 23:28:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:28:50,720 INFO L225 Difference]: With dead ends: 86 [2020-08-18 23:28:50,720 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 23:28:50,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:28:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 23:28:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 23:28:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 23:28:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 23:28:50,769 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 23:28:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:28:50,769 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 23:28:50,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:28:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 23:28:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 23:28:50,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:28:50,771 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] [2020-08-18 23:28:50,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:28:50,772 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:28:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:28:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-18 23:28:50,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:28:50,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63749058] [2020-08-18 23:28:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:28:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:28:50,823 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:28:50,823 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:28:50,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:28:50,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:28:50 BoogieIcfgContainer [2020-08-18 23:28:50,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:28:50,845 INFO L168 Benchmark]: Toolchain (without parser) took 1854.53 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 104.5 MB in the beginning and 111.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:50,846 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 23:28:50,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.28 ms. Allocated memory is still 141.6 MB. Free memory was 104.1 MB in the beginning and 92.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:50,848 INFO L168 Benchmark]: Boogie Preprocessor took 162.27 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 182.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:50,849 INFO L168 Benchmark]: RCFGBuilder took 499.93 ms. Allocated memory is still 205.0 MB. Free memory was 181.7 MB in the beginning and 159.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:50,850 INFO L168 Benchmark]: TraceAbstraction took 860.28 ms. Allocated memory is still 205.0 MB. Free memory was 159.2 MB in the beginning and 111.7 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:50,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.28 ms. Allocated memory is still 141.6 MB. Free memory was 104.1 MB in the beginning and 92.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.27 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 182.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.93 ms. Allocated memory is still 205.0 MB. Free memory was 181.7 MB in the beginning and 159.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 860.28 ms. Allocated memory is still 205.0 MB. Free memory was 159.2 MB in the beginning and 111.7 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 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: 0.3s, 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, 0.1s 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...