/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=BIGGEST --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 [2020-08-21 17:17:27,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:17:27,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:17:27,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:17:27,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:17:27,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:17:27,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:17:27,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:17:27,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:17:27,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:17:27,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:17:27,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:17:27,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:17:27,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:17:27,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:17:27,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:17:27,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:17:27,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:17:27,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:17:27,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:17:27,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:17:27,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:17:27,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:17:27,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:17:27,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:17:27,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:17:27,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:17:27,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:17:27,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:17:27,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:17:27,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:17:27,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:17:27,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:17:27,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:17:27,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:17:27,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:17:27,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:17:27,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:17:27,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:17:27,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:17:27,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:17:27,732 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 [2020-08-21 17:17:27,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:17:27,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:17:27,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:17:27,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:17:27,756 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:17:27,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:17:27,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:17:27,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:17:27,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:17:27,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:17:27,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:17:27,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:17:27,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:17:27,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:17:27,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:17:27,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:17:27,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:17:27,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:17:27,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:17:27,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:17:27,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:17:27,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:17:27,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:17:27,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:17:27,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:17:27,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:17:27,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:17:27,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:17:27,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:17:27,762 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=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:17:28,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:17:28,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:17:28,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:17:28,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:17:28,099 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:17:28,100 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-21 17:17:28,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/732bd6078/1bea1cd0d0ff4ec2a6e5da4e6539a27c/FLAG580d01a27 [2020-08-21 17:17:28,622 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:17:28,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-21 17:17:28,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/732bd6078/1bea1cd0d0ff4ec2a6e5da4e6539a27c/FLAG580d01a27 [2020-08-21 17:17:29,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/732bd6078/1bea1cd0d0ff4ec2a6e5da4e6539a27c [2020-08-21 17:17:29,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:17:29,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:17:29,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:29,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:17:29,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:17:29,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:29" (1/1) ... [2020-08-21 17:17:29,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313262ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29, skipping insertion in model container [2020-08-21 17:17:29,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:29" (1/1) ... [2020-08-21 17:17:29,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:17:29,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:17:29,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:29,401 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:17:29,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:29,561 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:17:29,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29 WrapperNode [2020-08-21 17:17:29,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:29,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:17:29,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:17:29,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:17:29,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29" (1/1) ... [2020-08-21 17:17:29,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29" (1/1) ... [2020-08-21 17:17:29,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29" (1/1) ... [2020-08-21 17:17:29,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29" (1/1) ... [2020-08-21 17:17:29,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29" (1/1) ... [2020-08-21 17:17:29,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29" (1/1) ... [2020-08-21 17:17:29,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29" (1/1) ... [2020-08-21 17:17:29,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:17:29,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:17:29,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:17:29,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:17:29,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29" (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 [2020-08-21 17:17:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:17:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:17:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-21 17:17:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 17:17:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:17:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:17:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-21 17:17:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:17:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 17:17:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:17:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:17:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:17:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 17:17:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 17:17:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:17:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:17:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:17:30,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:17:30,130 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 17:17:30,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:30 BoogieIcfgContainer [2020-08-21 17:17:30,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:17:30,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:17:30,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:17:30,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:17:30,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:17:29" (1/3) ... [2020-08-21 17:17:30,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c848fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:30, skipping insertion in model container [2020-08-21 17:17:30,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:29" (2/3) ... [2020-08-21 17:17:30,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c848fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:30, skipping insertion in model container [2020-08-21 17:17:30,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:30" (3/3) ... [2020-08-21 17:17:30,141 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-21 17:17:30,152 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:17:30,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:17:30,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:17:30,191 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:17:30,191 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:17:30,191 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:17:30,191 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:17:30,192 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:17:30,192 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:17:30,192 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:17:30,192 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:17:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-21 17:17:30,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 17:17:30,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:30,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:17:30,224 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-21 17:17:30,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:30,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448327377] [2020-08-21 17:17:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:30,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:17:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:17:30,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448327377] [2020-08-21 17:17:30,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:17:30,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:17:30,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447573974] [2020-08-21 17:17:30,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:17:30,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:17:30,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:17:30,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:17:30,490 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-21 17:17:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:17:30,825 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-21 17:17:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:17:30,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 17:17:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:17:30,836 INFO L225 Difference]: With dead ends: 94 [2020-08-21 17:17:30,836 INFO L226 Difference]: Without dead ends: 47 [2020-08-21 17:17:30,840 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 [2020-08-21 17:17:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-21 17:17:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-21 17:17:30,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 17:17:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-21 17:17:30,880 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-21 17:17:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:17:30,881 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-21 17:17:30,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:17:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-21 17:17:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 17:17:30,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:30,883 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] [2020-08-21 17:17:30,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:17:30,884 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:30,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:30,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-21 17:17:30,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:30,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614990410] [2020-08-21 17:17:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:17:30,962 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:17:30,962 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:17:30,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:17:30,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:17:30 BoogieIcfgContainer [2020-08-21 17:17:30,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:17:30,985 INFO L168 Benchmark]: Toolchain (without parser) took 1932.59 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 100.2 MB in the beginning and 101.4 MB in the end (delta: -1.2 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:30,986 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:17:30,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.73 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 100.0 MB in the beginning and 176.4 MB in the end (delta: -76.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:30,988 INFO L168 Benchmark]: Boogie Preprocessor took 51.19 ms. Allocated memory is still 199.8 MB. Free memory was 176.4 MB in the beginning and 174.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:30,989 INFO L168 Benchmark]: RCFGBuilder took 520.40 ms. Allocated memory is still 199.8 MB. Free memory was 174.3 MB in the beginning and 150.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:30,990 INFO L168 Benchmark]: TraceAbstraction took 847.74 ms. Allocated memory is still 199.8 MB. Free memory was 149.5 MB in the beginning and 101.4 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:30,994 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 508.73 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 100.0 MB in the beginning and 176.4 MB in the end (delta: -76.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.19 ms. Allocated memory is still 199.8 MB. Free memory was 176.4 MB in the beginning and 174.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.40 ms. Allocated memory is still 199.8 MB. Free memory was 174.3 MB in the beginning and 150.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 847.74 ms. Allocated memory is still 199.8 MB. Free memory was 149.5 MB in the beginning and 101.4 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...