/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=0.3 --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 04:36:37,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:36:37,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:36:37,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:36:37,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:36:37,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:36:37,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:36:37,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:36:37,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:36:37,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:36:37,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:36:37,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:36:37,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:36:37,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:36:37,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:36:37,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:36:37,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:36:37,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:36:37,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:36:37,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:36:37,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:36:37,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:36:37,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:36:37,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:36:37,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:36:37,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:36:37,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:36:37,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:36:37,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:36:37,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:36:37,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:36:37,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:36:37,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:36:37,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:36:37,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:36:37,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:36:37,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:36:37,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:36:37,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:36:37,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:36:37,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:36:37,362 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 04:36:37,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:36:37,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:36:37,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:36:37,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:36:37,411 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:36:37,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:36:37,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:36:37,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:36:37,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:36:37,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:36:37,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:36:37,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:36:37,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:36:37,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:36:37,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:36:37,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:36:37,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:36:37,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:36:37,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:36:37,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:36:37,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:36:37,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:36:37,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:36:37,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:36:37,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:36:37,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:36:37,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:36:37,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:36:37,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:36:37,418 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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-08-22 04:36:37,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:36:37,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:36:37,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:36:37,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:36:37,739 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:36:37,740 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 04:36:37,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cb4040e5/c0849829897b471984358490622a5db4/FLAG3110356cd [2020-08-22 04:36:38,342 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:36:38,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 04:36:38,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cb4040e5/c0849829897b471984358490622a5db4/FLAG3110356cd [2020-08-22 04:36:38,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cb4040e5/c0849829897b471984358490622a5db4 [2020-08-22 04:36:38,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:36:38,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:36:38,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:36:38,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:36:38,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:36:38,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:36:38" (1/1) ... [2020-08-22 04:36:38,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3c5dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:38, skipping insertion in model container [2020-08-22 04:36:38,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:36:38" (1/1) ... [2020-08-22 04:36:38,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:36:38,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:36:38,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:36:38,889 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:36:38,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:36:39,030 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:36:39,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39 WrapperNode [2020-08-22 04:36:39,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:36:39,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:36:39,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:36:39,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:36:39,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39" (1/1) ... [2020-08-22 04:36:39,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39" (1/1) ... [2020-08-22 04:36:39,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39" (1/1) ... [2020-08-22 04:36:39,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39" (1/1) ... [2020-08-22 04:36:39,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39" (1/1) ... [2020-08-22 04:36:39,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39" (1/1) ... [2020-08-22 04:36:39,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39" (1/1) ... [2020-08-22 04:36:39,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:36:39,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:36:39,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:36:39,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:36:39,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39" (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 04:36:39,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:36:39,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:36:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 04:36:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-22 04:36:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:36:39,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:36:39,140 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 04:36:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-22 04:36:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:36:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 04:36:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:36:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:36:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:36:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 04:36:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:36:39,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:36:39,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:36:39,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:36:39,556 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 04:36:39,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:36:39 BoogieIcfgContainer [2020-08-22 04:36:39,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:36:39,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:36:39,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:36:39,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:36:39,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:36:38" (1/3) ... [2020-08-22 04:36:39,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130db8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:36:39, skipping insertion in model container [2020-08-22 04:36:39,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:39" (2/3) ... [2020-08-22 04:36:39,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130db8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:36:39, skipping insertion in model container [2020-08-22 04:36:39,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:36:39" (3/3) ... [2020-08-22 04:36:39,569 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-22 04:36:39,579 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:36:39,587 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:36:39,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:36:39,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:36:39,622 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:36:39,622 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:36:39,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:36:39,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:36:39,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:36:39,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:36:39,622 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:36:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-22 04:36:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 04:36:39,648 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:36:39,649 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 04:36:39,650 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:36:39,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:36:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-22 04:36:39,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:36:39,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188082104] [2020-08-22 04:36:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:36:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:39,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:36:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:36:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:39,887 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 04:36:39,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188082104] [2020-08-22 04:36:39,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:36:39,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:36:39,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055225362] [2020-08-22 04:36:39,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:36:39,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:36:39,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:36:39,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:36:39,912 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-22 04:36:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:36:40,130 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-22 04:36:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:36:40,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-22 04:36:40,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:36:40,144 INFO L225 Difference]: With dead ends: 76 [2020-08-22 04:36:40,144 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 04:36:40,147 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 04:36:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 04:36:40,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-22 04:36:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 04:36:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-22 04:36:40,190 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-22 04:36:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:36:40,191 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-22 04:36:40,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:36:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-22 04:36:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 04:36:40,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:36:40,193 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 04:36:40,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:36:40,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:36:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:36:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-22 04:36:40,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:36:40,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565609502] [2020-08-22 04:36:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:36:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:36:40,239 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:36:40,239 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:36:40,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:36:40,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:36:40 BoogieIcfgContainer [2020-08-22 04:36:40,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:36:40,266 INFO L168 Benchmark]: Toolchain (without parser) took 1580.96 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 113.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:40,267 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:36:40,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.03 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 182.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:40,269 INFO L168 Benchmark]: Boogie Preprocessor took 40.82 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 180.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:40,270 INFO L168 Benchmark]: RCFGBuilder took 488.17 ms. Allocated memory is still 205.0 MB. Free memory was 180.9 MB in the beginning and 159.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:40,271 INFO L168 Benchmark]: TraceAbstraction took 701.01 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 113.4 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:40,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.03 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 182.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.82 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 180.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.17 ms. Allocated memory is still 205.0 MB. Free memory was 180.9 MB in the beginning and 159.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 701.01 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 113.4 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 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...