/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=0.5 --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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:13:48,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:13:48,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:13:48,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:13:48,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:13:48,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:13:48,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:13:48,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:13:48,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:13:48,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:13:48,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:13:48,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:13:48,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:13:48,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:13:48,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:13:48,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:13:48,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:13:48,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:13:48,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:13:48,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:13:48,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:13:48,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:13:48,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:13:48,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:13:48,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:13:48,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:13:48,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:13:48,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:13:48,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:13:48,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:13:48,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:13:48,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:13:48,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:13:48,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:13:48,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:13:48,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:13:48,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:13:48,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:13:48,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:13:48,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:13:48,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:13:48,952 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 06:13:48,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:13:48,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:13:48,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:13:48,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:13:48,977 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:13:48,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:13:48,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:13:48,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:13:48,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:13:48,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:13:48,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:13:48,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:13:48,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:13:48,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:13:48,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:13:48,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:13:48,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:13:48,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:13:48,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:13:48,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:13:48,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:13:48,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:13:48,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:13:48,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:13:48,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:13:48,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:13:48,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:13:48,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:13:48,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:13:48,983 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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-08-22 06:13:49,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:13:49,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:13:49,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:13:49,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:13:49,310 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:13:49,311 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 06:13:49,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53375e79e/fcdb6fbcf2bf4501950a3315f97c1497/FLAGc086429eb [2020-08-22 06:13:49,854 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:13:49,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 06:13:49,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53375e79e/fcdb6fbcf2bf4501950a3315f97c1497/FLAGc086429eb [2020-08-22 06:13:50,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53375e79e/fcdb6fbcf2bf4501950a3315f97c1497 [2020-08-22 06:13:50,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:13:50,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:13:50,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:13:50,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:13:50,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:13:50,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:13:50" (1/1) ... [2020-08-22 06:13:50,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7ba94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50, skipping insertion in model container [2020-08-22 06:13:50,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:13:50" (1/1) ... [2020-08-22 06:13:50,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:13:50,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:13:50,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:13:50,423 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:13:50,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:13:50,558 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:13:50,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50 WrapperNode [2020-08-22 06:13:50,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:13:50,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:13:50,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:13:50,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:13:50,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50" (1/1) ... [2020-08-22 06:13:50,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50" (1/1) ... [2020-08-22 06:13:50,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50" (1/1) ... [2020-08-22 06:13:50,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50" (1/1) ... [2020-08-22 06:13:50,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50" (1/1) ... [2020-08-22 06:13:50,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50" (1/1) ... [2020-08-22 06:13:50,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50" (1/1) ... [2020-08-22 06:13:50,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:13:50,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:13:50,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:13:50,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:13:50,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50" (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 06:13:50,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:13:50,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:13:50,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 06:13:50,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-22 06:13:50,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:13:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:13:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 06:13:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-22 06:13:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:13:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 06:13:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:13:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:13:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:13:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 06:13:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:13:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:13:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:13:51,021 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:13:51,021 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 06:13:51,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:13:51 BoogieIcfgContainer [2020-08-22 06:13:51,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:13:51,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:13:51,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:13:51,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:13:51,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:13:50" (1/3) ... [2020-08-22 06:13:51,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d60dde3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:13:51, skipping insertion in model container [2020-08-22 06:13:51,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:50" (2/3) ... [2020-08-22 06:13:51,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d60dde3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:13:51, skipping insertion in model container [2020-08-22 06:13:51,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:13:51" (3/3) ... [2020-08-22 06:13:51,033 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-22 06:13:51,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:13:51,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:13:51,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:13:51,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:13:51,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:13:51,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:13:51,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:13:51,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:13:51,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:13:51,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:13:51,088 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:13:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-22 06:13:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 06:13:51,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:13:51,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:13:51,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:13:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:13:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-22 06:13:51,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:13:51,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271552970] [2020-08-22 06:13:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:13:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:13:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:51,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:13:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:51,349 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 06:13:51,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271552970] [2020-08-22 06:13:51,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:13:51,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:13:51,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323655358] [2020-08-22 06:13:51,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:13:51,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:13:51,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:13:51,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:13:51,379 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-22 06:13:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:13:51,595 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-22 06:13:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:13:51,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-22 06:13:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:13:51,610 INFO L225 Difference]: With dead ends: 76 [2020-08-22 06:13:51,610 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 06:13:51,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:13:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 06:13:51,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-22 06:13:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 06:13:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-22 06:13:51,661 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-22 06:13:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:13:51,662 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-22 06:13:51,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:13:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-22 06:13:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 06:13:51,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:13:51,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:13:51,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:13:51,664 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:13:51,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:13:51,665 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-22 06:13:51,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:13:51,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302105792] [2020-08-22 06:13:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:13:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:13:51,725 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:13:51,725 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:13:51,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:13:51,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:13:51 BoogieIcfgContainer [2020-08-22 06:13:51,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:13:51,750 INFO L168 Benchmark]: Toolchain (without parser) took 1590.31 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 101.4 MB in the beginning and 107.7 MB in the end (delta: -6.3 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:51,751 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:13:51,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.34 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 177.9 MB in the end (delta: -76.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:51,753 INFO L168 Benchmark]: Boogie Preprocessor took 43.04 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 176.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:51,754 INFO L168 Benchmark]: RCFGBuilder took 423.63 ms. Allocated memory is still 199.8 MB. Free memory was 175.4 MB in the beginning and 153.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:51,755 INFO L168 Benchmark]: TraceAbstraction took 720.55 ms. Allocated memory is still 199.8 MB. Free memory was 152.6 MB in the beginning and 107.7 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:51,759 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 398.34 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 177.9 MB in the end (delta: -76.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.04 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 176.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.63 ms. Allocated memory is still 199.8 MB. Free memory was 175.4 MB in the beginning and 153.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 720.55 ms. Allocated memory is still 199.8 MB. Free memory was 152.6 MB in the beginning and 107.7 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: 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 someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] 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; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 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: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...