/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:59:26,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:59:26,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:59:26,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:59:26,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:59:26,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:59:26,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:59:26,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:59:26,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:59:26,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:59:26,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:59:26,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:59:26,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:59:26,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:59:26,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:59:26,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:59:26,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:59:26,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:59:26,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:59:26,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:59:26,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:59:26,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:59:26,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:59:26,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:59:26,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:59:26,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:59:26,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:59:26,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:59:26,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:59:26,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:59:26,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:59:26,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:59:26,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:59:26,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:59:26,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:59:26,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:59:26,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:59:26,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:59:26,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:59:26,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:59:26,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:59:26,775 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 [2020-08-22 02:59:26,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:59:26,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:59:26,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:59:26,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:59:26,816 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:59:26,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:59:26,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:59:26,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:59:26,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:59:26,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:59:26,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:59:26,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:59:26,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:59:26,819 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:59:26,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:59:26,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:59:26,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:59:26,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:59:26,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:59:26,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:59:26,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:59:26,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:59:26,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:59:26,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:59:26,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:59:26,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:59:26,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:59:26,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:59:26,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:59:26,822 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:59:27,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:59:27,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:59:27,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:59:27,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:59:27,164 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:59:27,165 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 02:59:27,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a407ef81/c0d199d0dacd47a282c4925b944ebaa5/FLAGfc503a332 [2020-08-22 02:59:27,685 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:59:27,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 02:59:27,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a407ef81/c0d199d0dacd47a282c4925b944ebaa5/FLAGfc503a332 [2020-08-22 02:59:28,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a407ef81/c0d199d0dacd47a282c4925b944ebaa5 [2020-08-22 02:59:28,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:59:28,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:59:28,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:28,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:59:28,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:59:28,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:28" (1/1) ... [2020-08-22 02:59:28,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0cc214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28, skipping insertion in model container [2020-08-22 02:59:28,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:28" (1/1) ... [2020-08-22 02:59:28,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:59:28,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:59:28,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:28,280 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:59:28,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:28,423 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:59:28,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28 WrapperNode [2020-08-22 02:59:28,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:28,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:59:28,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:59:28,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:59:28,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28" (1/1) ... [2020-08-22 02:59:28,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28" (1/1) ... [2020-08-22 02:59:28,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28" (1/1) ... [2020-08-22 02:59:28,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28" (1/1) ... [2020-08-22 02:59:28,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28" (1/1) ... [2020-08-22 02:59:28,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28" (1/1) ... [2020-08-22 02:59:28,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28" (1/1) ... [2020-08-22 02:59:28,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:59:28,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:59:28,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:59:28,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:59:28,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28" (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 [2020-08-22 02:59:28,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:59:28,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:59:28,535 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 02:59:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 02:59:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:59:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:59:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 02:59:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:59:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 02:59:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:59:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:59:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:59:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 02:59:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 02:59:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:59:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:59:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:59:28,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:59:28,906 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 02:59:28,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:28 BoogieIcfgContainer [2020-08-22 02:59:28,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:59:28,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:59:28,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:59:28,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:59:28,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:59:28" (1/3) ... [2020-08-22 02:59:28,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32624275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:28, skipping insertion in model container [2020-08-22 02:59:28,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:28" (2/3) ... [2020-08-22 02:59:28,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32624275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:28, skipping insertion in model container [2020-08-22 02:59:28,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:28" (3/3) ... [2020-08-22 02:59:28,919 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-22 02:59:28,930 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:59:28,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:59:28,952 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:59:28,974 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:59:28,974 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:59:28,974 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:59:28,975 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:59:28,975 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:59:28,975 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:59:28,975 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:59:28,975 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:59:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-22 02:59:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 02:59:29,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:29,002 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] [2020-08-22 02:59:29,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:29,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-22 02:59:29,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:29,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324829555] [2020-08-22 02:59:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:59:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:29,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:59:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:59:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:59:29,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324829555] [2020-08-22 02:59:29,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:59:29,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:59:29,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575831184] [2020-08-22 02:59:29,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:59:29,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:59:29,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:59:29,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:59:29,289 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-22 02:59:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:59:29,516 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-22 02:59:29,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:59:29,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-22 02:59:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:59:29,530 INFO L225 Difference]: With dead ends: 86 [2020-08-22 02:59:29,531 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 02:59:29,535 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 [2020-08-22 02:59:29,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 02:59:29,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 02:59:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 02:59:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-22 02:59:29,581 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-22 02:59:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:59:29,582 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-22 02:59:29,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:59:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-22 02:59:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 02:59:29,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:29,584 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] [2020-08-22 02:59:29,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:59:29,585 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:29,586 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-22 02:59:29,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:29,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061805626] [2020-08-22 02:59:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:59:29,640 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:59:29,641 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:59:29,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:59:29,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:59:29 BoogieIcfgContainer [2020-08-22 02:59:29,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:59:29,686 INFO L168 Benchmark]: Toolchain (without parser) took 1651.21 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 108.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:29,689 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:59:29,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.92 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 181.4 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:29,696 INFO L168 Benchmark]: Boogie Preprocessor took 43.83 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 178.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:29,698 INFO L168 Benchmark]: RCFGBuilder took 442.40 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 156.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:29,699 INFO L168 Benchmark]: TraceAbstraction took 770.85 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 108.2 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:29,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.92 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 181.4 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.83 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 178.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.40 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 156.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 770.85 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 108.2 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: 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 someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] 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; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 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...