/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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:13:47,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:13:47,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:13:47,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:13:47,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:13:47,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:13:47,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:13:47,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:13:47,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:13:47,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:13:47,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:13:47,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:13:47,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:13:47,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:13:47,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:13:47,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:13:47,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:13:47,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:13:47,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:13:47,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:13:47,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:13:47,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:13:47,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:13:47,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:13:47,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:13:47,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:13:47,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:13:47,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:13:47,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:13:47,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:13:47,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:13:47,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:13:47,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:13:47,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:13:47,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:13:47,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:13:47,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:13:47,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:13:47,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:13:47,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:13:47,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:13:47,087 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 06:13:47,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:13:47,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:13:47,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:13:47,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:13:47,111 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:13:47,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:13:47,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:13:47,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:13:47,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:13:47,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:13:47,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:13:47,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:13:47,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:13:47,113 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:13:47,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:13:47,114 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:13:47,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:13:47,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:13:47,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:13:47,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:13:47,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:13:47,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:13:47,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:13:47,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:13:47,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:13:47,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:13:47,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:13:47,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:13:47,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:13:47,116 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 06:13:47,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:13:47,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:13:47,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:13:47,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:13:47,429 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:13:47,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-22 06:13:47,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413b47424/7c682ba605aa4ba6910105820100f313/FLAGe26ded53b [2020-08-22 06:13:47,998 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:13:47,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-22 06:13:48,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413b47424/7c682ba605aa4ba6910105820100f313/FLAGe26ded53b [2020-08-22 06:13:48,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413b47424/7c682ba605aa4ba6910105820100f313 [2020-08-22 06:13:48,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:13:48,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:13:48,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:13:48,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:13:48,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:13:48,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:13:48" (1/1) ... [2020-08-22 06:13:48,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da81866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48, skipping insertion in model container [2020-08-22 06:13:48,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:13:48" (1/1) ... [2020-08-22 06:13:48,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:13:48,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:13:48,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:13:48,601 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:13:48,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:13:48,755 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:13:48,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48 WrapperNode [2020-08-22 06:13:48,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:13:48,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:13:48,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:13:48,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:13:48,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48" (1/1) ... [2020-08-22 06:13:48,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48" (1/1) ... [2020-08-22 06:13:48,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48" (1/1) ... [2020-08-22 06:13:48,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48" (1/1) ... [2020-08-22 06:13:48,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48" (1/1) ... [2020-08-22 06:13:48,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48" (1/1) ... [2020-08-22 06:13:48,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48" (1/1) ... [2020-08-22 06:13:48,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:13:48,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:13:48,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:13:48,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:13:48,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48" (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 06:13:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:13:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:13:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 06:13:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 06:13:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:13:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:13:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 06:13:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:13:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 06:13:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:13:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:13:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:13:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 06:13:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 06:13:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:13:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:13:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:13:49,259 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:13:49,259 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 06:13:49,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:13:49 BoogieIcfgContainer [2020-08-22 06:13:49,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:13:49,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:13:49,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:13:49,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:13:49,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:13:48" (1/3) ... [2020-08-22 06:13:49,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bce84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:13:49, skipping insertion in model container [2020-08-22 06:13:49,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:48" (2/3) ... [2020-08-22 06:13:49,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bce84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:13:49, skipping insertion in model container [2020-08-22 06:13:49,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:13:49" (3/3) ... [2020-08-22 06:13:49,275 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-22 06:13:49,289 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:13:49,298 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:13:49,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:13:49,350 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:13:49,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:13:49,350 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:13:49,351 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:13:49,351 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:13:49,351 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:13:49,351 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:13:49,351 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:13:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-22 06:13:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 06:13:49,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:13:49,382 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 06:13:49,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:13:49,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:13:49,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-22 06:13:49,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:13:49,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894795555] [2020-08-22 06:13:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:13:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:13:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:49,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:13:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:49,617 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 06:13:49,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894795555] [2020-08-22 06:13:49,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:13:49,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:13:49,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67527032] [2020-08-22 06:13:49,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:13:49,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:13:49,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:13:49,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:13:49,641 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-22 06:13:49,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:13:49,913 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-22 06:13:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:13:49,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 06:13:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:13:49,926 INFO L225 Difference]: With dead ends: 94 [2020-08-22 06:13:49,927 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 06:13:49,931 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 06:13:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 06:13:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-22 06:13:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 06:13:49,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-22 06:13:49,979 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-22 06:13:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:13:49,979 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-22 06:13:49,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:13:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-22 06:13:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 06:13:49,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:13:49,982 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 06:13:49,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:13:49,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:13:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:13:49,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-22 06:13:49,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:13:49,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905571366] [2020-08-22 06:13:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:13:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:13:50,044 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:13:50,044 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:13:50,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:13:50,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:13:50 BoogieIcfgContainer [2020-08-22 06:13:50,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:13:50,069 INFO L168 Benchmark]: Toolchain (without parser) took 1713.22 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 100.8 MB in the beginning and 103.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:50,070 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-22 06:13:50,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.71 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 100.4 MB in the beginning and 178.9 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:50,072 INFO L168 Benchmark]: Boogie Preprocessor took 47.72 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 175.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:50,073 INFO L168 Benchmark]: RCFGBuilder took 460.82 ms. Allocated memory is still 200.8 MB. Free memory was 175.9 MB in the beginning and 152.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:50,074 INFO L168 Benchmark]: TraceAbstraction took 799.76 ms. Allocated memory is still 200.8 MB. Free memory was 151.6 MB in the beginning and 103.5 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:50,078 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 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 399.71 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 100.4 MB in the beginning and 178.9 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.72 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 175.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.82 ms. Allocated memory is still 200.8 MB. Free memory was 175.9 MB in the beginning and 152.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 799.76 ms. Allocated memory is still 200.8 MB. Free memory was 151.6 MB in the beginning and 103.5 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: 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 someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] 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; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 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=51occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...