/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:57:17,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:57:17,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:57:17,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:57:17,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:57:17,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:57:17,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:57:17,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:57:17,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:57:17,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:57:17,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:57:17,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:57:17,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:57:17,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:57:17,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:57:17,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:57:17,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:57:17,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:57:17,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:57:17,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:57:17,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:57:17,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:57:17,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:57:17,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:57:17,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:57:17,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:57:17,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:57:17,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:57:17,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:57:17,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:57:17,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:57:17,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:57:17,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:57:17,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:57:17,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:57:17,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:57:17,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:57:17,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:57:17,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:57:17,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:57:17,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:57:17,534 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 [2020-08-19 05:57:17,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:57:17,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:57:17,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:57:17,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:57:17,567 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:57:17,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:57:17,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:57:17,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:57:17,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:57:17,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:57:17,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:57:17,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:57:17,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:57:17,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:57:17,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:57:17,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:57:17,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:57:17,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:57:17,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:57:17,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:57:17,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:57:17,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:57:17,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:57:17,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:57:17,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:57:17,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:57:17,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:57:17,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:57:17,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:57:17,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:57:17,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:57:17,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:57:17,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:57:17,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:57:17,885 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:57:17,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-19 05:57:17,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74eb65333/5a34d0b836d24f548cb3db31ac7f2a49/FLAG7b4dbc7c7 [2020-08-19 05:57:18,470 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:57:18,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-19 05:57:18,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74eb65333/5a34d0b836d24f548cb3db31ac7f2a49/FLAG7b4dbc7c7 [2020-08-19 05:57:18,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74eb65333/5a34d0b836d24f548cb3db31ac7f2a49 [2020-08-19 05:57:18,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:57:18,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:57:18,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:57:18,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:57:18,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:57:18,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:57:18" (1/1) ... [2020-08-19 05:57:18,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d5037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:18, skipping insertion in model container [2020-08-19 05:57:18,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:57:18" (1/1) ... [2020-08-19 05:57:18,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:57:18,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:57:19,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:57:19,070 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:57:19,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:57:19,229 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:57:19,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19 WrapperNode [2020-08-19 05:57:19,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:57:19,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:57:19,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:57:19,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:57:19,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19" (1/1) ... [2020-08-19 05:57:19,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19" (1/1) ... [2020-08-19 05:57:19,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19" (1/1) ... [2020-08-19 05:57:19,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19" (1/1) ... [2020-08-19 05:57:19,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19" (1/1) ... [2020-08-19 05:57:19,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19" (1/1) ... [2020-08-19 05:57:19,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19" (1/1) ... [2020-08-19 05:57:19,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:57:19,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:57:19,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:57:19,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:57:19,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19" (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 [2020-08-19 05:57:19,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:57:19,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:57:19,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 05:57:19,371 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-19 05:57:19,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-19 05:57:19,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:57:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:57:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 05:57:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 05:57:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-19 05:57:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:57:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 05:57:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:57:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:57:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 05:57:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:57:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-19 05:57:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:57:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:57:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 05:57:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:57:19,944 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:57:19,945 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-19 05:57:19,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:57:19 BoogieIcfgContainer [2020-08-19 05:57:19,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:57:19,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:57:19,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:57:19,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:57:19,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:57:18" (1/3) ... [2020-08-19 05:57:19,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b4b159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:57:19, skipping insertion in model container [2020-08-19 05:57:19,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:19" (2/3) ... [2020-08-19 05:57:19,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b4b159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:57:19, skipping insertion in model container [2020-08-19 05:57:19,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:57:19" (3/3) ... [2020-08-19 05:57:19,965 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-19 05:57:19,974 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:57:19,982 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:57:19,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:57:20,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:57:20,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:57:20,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:57:20,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:57:20,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:57:20,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:57:20,015 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:57:20,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:57:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-19 05:57:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 05:57:20,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:57:20,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:57:20,042 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:57:20,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:57:20,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-19 05:57:20,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:57:20,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753446844] [2020-08-19 05:57:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:57:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:57:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:20,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:57:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:20,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:57:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:57:20,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753446844] [2020-08-19 05:57:20,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:57:20,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:57:20,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12775593] [2020-08-19 05:57:20,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:57:20,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:57:20,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:57:20,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:57:20,339 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-19 05:57:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:57:20,681 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-19 05:57:20,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:57:20,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 05:57:20,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:57:20,693 INFO L225 Difference]: With dead ends: 138 [2020-08-19 05:57:20,694 INFO L226 Difference]: Without dead ends: 68 [2020-08-19 05:57:20,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:57:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-19 05:57:20,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-19 05:57:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-19 05:57:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-19 05:57:20,740 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-19 05:57:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:57:20,740 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-19 05:57:20,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:57:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-19 05:57:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 05:57:20,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:57:20,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:57:20,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:57:20,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:57:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:57:20,743 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-19 05:57:20,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:57:20,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352030043] [2020-08-19 05:57:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:57:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:57:20,858 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:57:20,858 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:57:20,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:57:20,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:57:20 BoogieIcfgContainer [2020-08-19 05:57:20,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:57:20,884 INFO L168 Benchmark]: Toolchain (without parser) took 2106.95 ms. Allocated memory was 140.5 MB in the beginning and 236.5 MB in the end (delta: 95.9 MB). Free memory was 103.6 MB in the beginning and 192.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:20,885 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:57:20,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.77 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.4 MB in the beginning and 178.7 MB in the end (delta: -75.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:20,887 INFO L168 Benchmark]: Boogie Preprocessor took 82.72 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 175.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:20,888 INFO L168 Benchmark]: RCFGBuilder took 638.21 ms. Allocated memory is still 203.4 MB. Free memory was 175.9 MB in the beginning and 139.4 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:20,889 INFO L168 Benchmark]: TraceAbstraction took 927.85 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 139.4 MB in the beginning and 192.6 MB in the end (delta: -53.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 05:57:20,893 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 453.77 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.4 MB in the beginning and 178.7 MB in the end (delta: -75.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.72 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 175.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 638.21 ms. Allocated memory is still 203.4 MB. Free memory was 175.9 MB in the beginning and 139.4 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 927.85 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 139.4 MB in the beginning and 192.6 MB in the end (delta: -53.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 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: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...