/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=0.2 --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_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:47:53,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:47:53,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:47:53,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:47:53,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:47:53,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:47:53,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:47:53,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:47:53,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:47:53,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:47:53,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:47:53,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:47:53,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:47:53,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:47:53,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:47:53,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:47:53,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:47:53,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:47:53,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:47:53,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:47:53,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:47:53,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:47:53,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:47:53,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:47:53,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:47:53,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:47:53,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:47:53,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:47:53,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:47:53,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:47:53,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:47:53,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:47:53,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:47:53,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:47:53,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:47:53,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:47:53,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:47:53,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:47:53,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:47:53,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:47:53,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:47:53,737 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 03:47:53,759 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:47:53,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:47:53,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:47:53,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:47:53,761 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:47:53,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:47:53,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:47:53,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:47:53,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:47:53,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:47:53,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:47:53,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:47:53,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:47:53,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:47:53,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:47:53,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:47:53,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:47:53,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:47:53,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:47:53,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:47:53,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:47:53,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:47:53,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:47:53,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:47:53,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:47:53,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:47:53,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:47:53,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:47:53,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:47:53,766 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-22 03:47:54,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:47:54,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:47:54,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:47:54,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:47:54,137 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:47:54,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-08-22 03:47:54,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7f00b2cc/731eb362dbe94b20a674967773d48bed/FLAG73ea3ff1d [2020-08-22 03:47:54,639 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:47:54,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-08-22 03:47:54,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7f00b2cc/731eb362dbe94b20a674967773d48bed/FLAG73ea3ff1d [2020-08-22 03:47:54,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7f00b2cc/731eb362dbe94b20a674967773d48bed [2020-08-22 03:47:54,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:47:54,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:47:54,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:47:54,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:47:54,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:47:54,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:47:54" (1/1) ... [2020-08-22 03:47:54,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4603aae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:54, skipping insertion in model container [2020-08-22 03:47:54,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:47:54" (1/1) ... [2020-08-22 03:47:54,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:47:55,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:47:55,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:47:55,218 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:47:55,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:47:55,380 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:47:55,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55 WrapperNode [2020-08-22 03:47:55,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:47:55,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:47:55,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:47:55,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:47:55,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55" (1/1) ... [2020-08-22 03:47:55,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55" (1/1) ... [2020-08-22 03:47:55,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55" (1/1) ... [2020-08-22 03:47:55,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55" (1/1) ... [2020-08-22 03:47:55,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55" (1/1) ... [2020-08-22 03:47:55,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55" (1/1) ... [2020-08-22 03:47:55,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55" (1/1) ... [2020-08-22 03:47:55,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:47:55,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:47:55,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:47:55,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:47:55,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55" (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 03:47:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:47:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:47:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 03:47:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-08-22 03:47:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-08-22 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:47:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:47:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:47:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 03:47:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:47:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:47:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:47:56,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:47:56,012 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-22 03:47:56,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:47:56 BoogieIcfgContainer [2020-08-22 03:47:56,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:47:56,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:47:56,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:47:56,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:47:56,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:47:54" (1/3) ... [2020-08-22 03:47:56,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2337c743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:47:56, skipping insertion in model container [2020-08-22 03:47:56,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:47:55" (2/3) ... [2020-08-22 03:47:56,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2337c743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:47:56, skipping insertion in model container [2020-08-22 03:47:56,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:47:56" (3/3) ... [2020-08-22 03:47:56,026 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2020-08-22 03:47:56,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:47:56,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:47:56,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:47:56,080 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:47:56,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:47:56,081 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:47:56,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:47:56,081 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:47:56,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:47:56,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:47:56,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:47:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-08-22 03:47:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 03:47:56,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:47:56,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:47:56,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:47:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:47:56,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1131346129, now seen corresponding path program 1 times [2020-08-22 03:47:56,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:47:56,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375011559] [2020-08-22 03:47:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:47:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:56,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:56,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:47:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:56,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:47:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:56,353 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 03:47:56,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375011559] [2020-08-22 03:47:56,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:47:56,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:47:56,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423431032] [2020-08-22 03:47:56,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:47:56,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:47:56,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:47:56,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:47:56,384 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 4 states. [2020-08-22 03:47:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:47:56,736 INFO L93 Difference]: Finished difference Result 116 states and 172 transitions. [2020-08-22 03:47:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:47:56,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-08-22 03:47:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:47:56,751 INFO L225 Difference]: With dead ends: 116 [2020-08-22 03:47:56,751 INFO L226 Difference]: Without dead ends: 58 [2020-08-22 03:47:56,755 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 03:47:56,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-22 03:47:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-22 03:47:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-22 03:47:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2020-08-22 03:47:56,808 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 20 [2020-08-22 03:47:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:47:56,809 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2020-08-22 03:47:56,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:47:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2020-08-22 03:47:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 03:47:56,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:47:56,811 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] [2020-08-22 03:47:56,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:47:56,812 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:47:56,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:47:56,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2124284734, now seen corresponding path program 1 times [2020-08-22 03:47:56,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:47:56,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118686787] [2020-08-22 03:47:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:47:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:47:56,874 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:47:56,874 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:47:56,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:47:56,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:47:56 BoogieIcfgContainer [2020-08-22 03:47:56,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:47:56,898 INFO L168 Benchmark]: Toolchain (without parser) took 1923.89 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 94.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:47:56,899 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:47:56,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.53 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 179.5 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:47:56,901 INFO L168 Benchmark]: Boogie Preprocessor took 55.05 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 176.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:47:56,902 INFO L168 Benchmark]: RCFGBuilder took 580.54 ms. Allocated memory is still 202.4 MB. Free memory was 176.7 MB in the beginning and 148.7 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-08-22 03:47:56,903 INFO L168 Benchmark]: TraceAbstraction took 877.12 ms. Allocated memory is still 202.4 MB. Free memory was 148.0 MB in the beginning and 94.1 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:47:56,907 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 406.53 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 179.5 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.05 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 176.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 580.54 ms. Allocated memory is still 202.4 MB. Free memory was 176.7 MB in the beginning and 148.7 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 877.12 ms. Allocated memory is still 202.4 MB. Free memory was 148.0 MB in the beginning and 94.1 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 145]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L139] double x = 0.0 / 0.0; [L141] CALL, EXPR __ieee754_sqrt(x) [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; [L141] RET, EXPR __ieee754_sqrt(x) [L141] double res = __ieee754_sqrt(x); [L144] CALL, EXPR isnan_double(res) [L18] return x != x; [L144] RET, EXPR isnan_double(res) [L144] COND TRUE !isnan_double(res) [L145] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 72 SDslu, 5 SDs, 0 SdLazy, 78 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=62occurred 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, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 874 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...