/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=0.3 -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 0.1.25-5644d1e-m [2020-08-19 05:08:43,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:08:43,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:08:43,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:08:43,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:08:43,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:08:43,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:08:43,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:08:43,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:08:43,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:08:43,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:08:43,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:08:43,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:08:43,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:08:43,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:08:43,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:08:43,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:08:43,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:08:43,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:08:43,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:08:43,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:08:43,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:08:43,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:08:43,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:08:43,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:08:43,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:08:43,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:08:43,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:08:43,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:08:43,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:08:43,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:08:43,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:08:43,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:08:43,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:08:43,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:08:43,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:08:43,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:08:43,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:08:43,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:08:43,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:08:43,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:08:43,790 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 05:08:43,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:08:43,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:08:43,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:08:43,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:08:43,815 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:08:43,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:08:43,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:08:43,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:08:43,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:08:43,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:08:43,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:08:43,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:08:43,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:08:43,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:08:43,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:08:43,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:08:43,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:08:43,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:08:43,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:08:43,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:08:43,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:08:43,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:08:43,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:08:43,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:08:43,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:08:43,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:08:43,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:08:43,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:08:43,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:08:43,821 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=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:08:44,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:08:44,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:08:44,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:08:44,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:08:44,176 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:08:44,177 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-19 05:08:44,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fcbd6d4d/cd4367ddec804124a3ab108b0821edbe/FLAG965f028b5 [2020-08-19 05:08:44,726 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:08:44,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-19 05:08:44,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fcbd6d4d/cd4367ddec804124a3ab108b0821edbe/FLAG965f028b5 [2020-08-19 05:08:45,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fcbd6d4d/cd4367ddec804124a3ab108b0821edbe [2020-08-19 05:08:45,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:08:45,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:08:45,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:08:45,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:08:45,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:08:45,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:08:45" (1/1) ... [2020-08-19 05:08:45,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d17223b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45, skipping insertion in model container [2020-08-19 05:08:45,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:08:45" (1/1) ... [2020-08-19 05:08:45,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:08:45,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:08:45,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:08:45,403 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:08:45,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:08:45,542 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:08:45,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45 WrapperNode [2020-08-19 05:08:45,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:08:45,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:08:45,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:08:45,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:08:45,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45" (1/1) ... [2020-08-19 05:08:45,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45" (1/1) ... [2020-08-19 05:08:45,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45" (1/1) ... [2020-08-19 05:08:45,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45" (1/1) ... [2020-08-19 05:08:45,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45" (1/1) ... [2020-08-19 05:08:45,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45" (1/1) ... [2020-08-19 05:08:45,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45" (1/1) ... [2020-08-19 05:08:45,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:08:45,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:08:45,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:08:45,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:08:45,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45" (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 05:08:45,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:08:45,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:08:45,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 05:08:45,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-19 05:08:45,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:08:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:08:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 05:08:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-19 05:08:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:08:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 05:08:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:08:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:08:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:08:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 05:08:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:08:45,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:08:45,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:08:46,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:08:46,019 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 05:08:46,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:08:46 BoogieIcfgContainer [2020-08-19 05:08:46,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:08:46,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:08:46,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:08:46,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:08:46,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:08:45" (1/3) ... [2020-08-19 05:08:46,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342d36ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:08:46, skipping insertion in model container [2020-08-19 05:08:46,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:45" (2/3) ... [2020-08-19 05:08:46,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342d36ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:08:46, skipping insertion in model container [2020-08-19 05:08:46,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:08:46" (3/3) ... [2020-08-19 05:08:46,031 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-19 05:08:46,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:08:46,049 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:08:46,063 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:08:46,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:08:46,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:08:46,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:08:46,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:08:46,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:08:46,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:08:46,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:08:46,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:08:46,114 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-19 05:08:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 05:08:46,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:08:46,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:08:46,133 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:08:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:08:46,143 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-19 05:08:46,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:08:46,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874437932] [2020-08-19 05:08:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:08:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:46,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:08:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:08:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:46,361 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 05:08:46,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874437932] [2020-08-19 05:08:46,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:08:46,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:08:46,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582319607] [2020-08-19 05:08:46,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:08:46,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:08:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:08:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:08:46,384 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-19 05:08:46,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:08:46,605 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-19 05:08:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:08:46,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-19 05:08:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:08:46,619 INFO L225 Difference]: With dead ends: 76 [2020-08-19 05:08:46,619 INFO L226 Difference]: Without dead ends: 38 [2020-08-19 05:08:46,623 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 [2020-08-19 05:08:46,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-19 05:08:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-19 05:08:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-19 05:08:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-19 05:08:46,667 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-19 05:08:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:08:46,667 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-19 05:08:46,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:08:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-19 05:08:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 05:08:46,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:08:46,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:08:46,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:08:46,670 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:08:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:08:46,670 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-19 05:08:46,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:08:46,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771988163] [2020-08-19 05:08:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:08:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:08:46,718 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:08:46,721 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:08:46,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:08:46,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:08:46 BoogieIcfgContainer [2020-08-19 05:08:46,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:08:46,765 INFO L168 Benchmark]: Toolchain (without parser) took 1676.49 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 100.4 MB in the beginning and 105.8 MB in the end (delta: -5.4 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:46,766 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:08:46,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.76 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 100.0 MB in the beginning and 176.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:46,776 INFO L168 Benchmark]: Boogie Preprocessor took 46.12 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 173.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:46,777 INFO L168 Benchmark]: RCFGBuilder took 432.76 ms. Allocated memory is still 199.2 MB. Free memory was 173.8 MB in the beginning and 151.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:46,781 INFO L168 Benchmark]: TraceAbstraction took 738.07 ms. Allocated memory is still 199.2 MB. Free memory was 151.0 MB in the beginning and 105.8 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:46,785 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 454.76 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 100.0 MB in the beginning and 176.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.12 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 173.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.76 ms. Allocated memory is still 199.2 MB. Free memory was 173.8 MB in the beginning and 151.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 738.07 ms. Allocated memory is still 199.2 MB. Free memory was 151.0 MB in the beginning and 105.8 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 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...