/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 11:43:09,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 11:43:09,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 11:43:09,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 11:43:09,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 11:43:09,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 11:43:09,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 11:43:09,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 11:43:09,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 11:43:09,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 11:43:09,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 11:43:09,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 11:43:09,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 11:43:09,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 11:43:09,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 11:43:09,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 11:43:09,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 11:43:09,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 11:43:09,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 11:43:09,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 11:43:09,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 11:43:09,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 11:43:09,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 11:43:09,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 11:43:09,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 11:43:09,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 11:43:09,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 11:43:09,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 11:43:09,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 11:43:09,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 11:43:09,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 11:43:09,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 11:43:09,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 11:43:09,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 11:43:09,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 11:43:09,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 11:43:09,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 11:43:09,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 11:43:09,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 11:43:09,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 11:43:09,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 11:43:09,927 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 11:43:09,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 11:43:09,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 11:43:09,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 11:43:09,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 11:43:09,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 11:43:09,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 11:43:09,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 11:43:09,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 11:43:09,931 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 11:43:09,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 11:43:09,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 11:43:09,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 11:43:09,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 11:43:09,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 11:43:09,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 11:43:09,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 11:43:09,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 11:43:09,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 11:43:09,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 11:43:09,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 11:43:09,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 11:43:09,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 11:43:09,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 11:43:09,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 11:43:09,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 11:43:10,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 11:43:10,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 11:43:10,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 11:43:10,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 11:43:10,238 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 11:43:10,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-07-17 11:43:10,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14549f84/5e33f7282d064e9884f5269ff0162612/FLAG92827d254 [2020-07-17 11:43:10,704 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 11:43:10,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-07-17 11:43:10,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14549f84/5e33f7282d064e9884f5269ff0162612/FLAG92827d254 [2020-07-17 11:43:11,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14549f84/5e33f7282d064e9884f5269ff0162612 [2020-07-17 11:43:11,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 11:43:11,129 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 11:43:11,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 11:43:11,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 11:43:11,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 11:43:11,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:43:11" (1/1) ... [2020-07-17 11:43:11,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f736972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11, skipping insertion in model container [2020-07-17 11:43:11,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:43:11" (1/1) ... [2020-07-17 11:43:11,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 11:43:11,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 11:43:11,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:43:11,378 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 11:43:11,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:43:11,517 INFO L208 MainTranslator]: Completed translation [2020-07-17 11:43:11,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11 WrapperNode [2020-07-17 11:43:11,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 11:43:11,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 11:43:11,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 11:43:11,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 11:43:11,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11" (1/1) ... [2020-07-17 11:43:11,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11" (1/1) ... [2020-07-17 11:43:11,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11" (1/1) ... [2020-07-17 11:43:11,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11" (1/1) ... [2020-07-17 11:43:11,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11" (1/1) ... [2020-07-17 11:43:11,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11" (1/1) ... [2020-07-17 11:43:11,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11" (1/1) ... [2020-07-17 11:43:11,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 11:43:11,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 11:43:11,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 11:43:11,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 11:43:11,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 11:43:11,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 11:43:11,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 11:43:11,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-17 11:43:11,623 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-07-17 11:43:11,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 11:43:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 11:43:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-17 11:43:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-07-17 11:43:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 11:43:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 11:43:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 11:43:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 11:43:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 11:43:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 11:43:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 11:43:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 11:43:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 11:43:11,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 11:43:11,967 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-17 11:43:11,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:43:11 BoogieIcfgContainer [2020-07-17 11:43:11,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 11:43:11,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 11:43:11,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 11:43:11,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 11:43:11,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 11:43:11" (1/3) ... [2020-07-17 11:43:11,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f22213d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:43:11, skipping insertion in model container [2020-07-17 11:43:11,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:11" (2/3) ... [2020-07-17 11:43:11,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f22213d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:43:11, skipping insertion in model container [2020-07-17 11:43:11,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:43:11" (3/3) ... [2020-07-17 11:43:11,979 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-07-17 11:43:11,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 11:43:11,997 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 11:43:12,011 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 11:43:12,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 11:43:12,045 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 11:43:12,045 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 11:43:12,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 11:43:12,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 11:43:12,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 11:43:12,046 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 11:43:12,046 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 11:43:12,082 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-17 11:43:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 11:43:12,088 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:43:12,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:43:12,089 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:43:12,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:43:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash -452059413, now seen corresponding path program 1 times [2020-07-17 11:43:12,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:43:12,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325497120] [2020-07-17 11:43:12,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:43:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:43:12,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325497120] [2020-07-17 11:43:12,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:43:12,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 11:43:12,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069227869] [2020-07-17 11:43:12,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 11:43:12,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:43:12,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 11:43:12,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 11:43:12,323 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-07-17 11:43:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:43:12,497 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-07-17 11:43:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 11:43:12,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-17 11:43:12,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:43:12,510 INFO L225 Difference]: With dead ends: 66 [2020-07-17 11:43:12,510 INFO L226 Difference]: Without dead ends: 33 [2020-07-17 11:43:12,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 11:43:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-17 11:43:12,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-17 11:43:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-17 11:43:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-07-17 11:43:12,557 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-07-17 11:43:12,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:43:12,558 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-07-17 11:43:12,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 11:43:12,558 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-07-17 11:43:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 11:43:12,559 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:43:12,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:43:12,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 11:43:12,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:43:12,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:43:12,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1570049965, now seen corresponding path program 1 times [2020-07-17 11:43:12,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:43:12,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581458184] [2020-07-17 11:43:12,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:43:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:43:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:43:12,795 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 11:43:12,796 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 11:43:12,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 11:43:12,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 11:43:12 BoogieIcfgContainer [2020-07-17 11:43:12,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 11:43:12,853 INFO L168 Benchmark]: Toolchain (without parser) took 1723.54 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 104.7 MB in the beginning and 112.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:12,855 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 11:43:12,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.74 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 104.3 MB in the beginning and 182.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:12,858 INFO L168 Benchmark]: Boogie Preprocessor took 39.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:12,859 INFO L168 Benchmark]: RCFGBuilder took 411.80 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 158.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:12,860 INFO L168 Benchmark]: TraceAbstraction took 877.16 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 112.9 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:12,871 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.74 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 104.3 MB in the beginning and 182.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 411.80 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 158.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 877.16 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 112.9 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L68] double x = 0.0 / 0.0; [L70] CALL, EXPR trunc_double(x) VAL [\old(x)=4294967297] [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; VAL [\old(x)=4294967297, x=4294967297] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967297, exponent_less_1023=1024, lsw=4, msw=0, signbit=-1, x=4294967297] [L30] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967297, exponent_less_1023=1024, lsw=4, msw=0, signbit=-1, x=4294967297] [L47] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967297, exponent_less_1023=1024, lsw=4, msw=0, signbit=-1, x=4294967297] [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; VAL [\old(x)=4294967297, exponent_less_1023=1024, lsw=4, msw=0, signbit=-1, x=4294967297] [L70] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967302, x=4294967297] [L70] double res = trunc_double(x); [L73] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967302] [L15] return x != x; VAL [\old(x)=4294967302, \result=0, x=4294967302] [L73] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967302, x=4294967297] [L73] COND TRUE !isnan_double(res) [L74] __VERIFIER_error() VAL [res=4294967302, x=4294967297] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 29 SDslu, 5 SDs, 0 SdLazy, 39 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 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...