/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:29:09,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:29:09,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:29:09,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:29:09,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:29:09,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:29:09,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:29:09,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:29:09,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:29:09,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:29:09,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:29:09,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:29:09,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:29:09,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:29:09,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:29:09,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:29:09,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:29:09,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:29:09,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:29:09,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:29:09,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:29:09,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:29:09,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:29:09,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:29:09,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:29:09,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:29:09,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:29:09,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:29:09,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:29:09,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:29:09,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:29:09,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:29:09,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:29:09,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:29:09,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:29:09,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:29:09,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:29:09,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:29:09,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:29:09,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:29:09,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:29:09,092 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 16:29:09,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:29:09,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:29:09,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:29:09,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:29:09,115 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:29:09,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:29:09,115 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:29:09,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:29:09,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:29:09,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:29:09,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:29:09,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:29:09,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:29:09,117 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:29:09,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:29:09,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:29:09,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:29:09,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:29:09,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:29:09,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:29:09,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:29:09,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:29:09,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:29:09,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:29:09,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:29:09,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:29:09,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:29:09,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:29:09,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:29:09,120 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:29:09,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:29:09,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:29:09,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:29:09,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:29:09,459 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:29:09,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 16:29:09,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7755b7d65/0ee9d992b2d942c1b12a16fa772c4428/FLAGc467134ec [2020-08-21 16:29:09,987 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:29:09,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 16:29:09,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7755b7d65/0ee9d992b2d942c1b12a16fa772c4428/FLAGc467134ec [2020-08-21 16:29:10,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7755b7d65/0ee9d992b2d942c1b12a16fa772c4428 [2020-08-21 16:29:10,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:29:10,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:29:10,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:10,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:29:10,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:29:10,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479ee9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10, skipping insertion in model container [2020-08-21 16:29:10,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:29:10,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:29:10,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:10,662 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:29:10,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:10,794 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:29:10,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10 WrapperNode [2020-08-21 16:29:10,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:10,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:29:10,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:29:10,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:29:10,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:29:10,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:29:10,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:29:10,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:29:10,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (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 16:29:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:29:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:29:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 16:29:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 16:29:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:29:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:29:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 16:29:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 16:29:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:29:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 16:29:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:29:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:29:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:29:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 16:29:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:29:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:29:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:29:11,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:29:11,306 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 16:29:11,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:11 BoogieIcfgContainer [2020-08-21 16:29:11,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:29:11,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:29:11,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:29:11,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:29:11,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:29:10" (1/3) ... [2020-08-21 16:29:11,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7791db67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:11, skipping insertion in model container [2020-08-21 16:29:11,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (2/3) ... [2020-08-21 16:29:11,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7791db67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:11, skipping insertion in model container [2020-08-21 16:29:11,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:11" (3/3) ... [2020-08-21 16:29:11,318 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-21 16:29:11,329 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:29:11,340 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:29:11,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:29:11,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:29:11,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:29:11,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:29:11,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:29:11,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:29:11,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:29:11,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:29:11,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:29:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-21 16:29:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 16:29:11,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:11,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:29:11,407 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:11,412 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-21 16:29:11,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:11,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379943000] [2020-08-21 16:29:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:11,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:11,649 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 16:29:11,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379943000] [2020-08-21 16:29:11,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:11,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:29:11,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302851482] [2020-08-21 16:29:11,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:29:11,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:11,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:29:11,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:29:11,675 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-21 16:29:11,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:11,928 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-21 16:29:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:29:11,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-21 16:29:11,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:11,948 INFO L225 Difference]: With dead ends: 76 [2020-08-21 16:29:11,949 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 16:29:11,954 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 16:29:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 16:29:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 16:29:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 16:29:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-21 16:29:12,015 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-21 16:29:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:12,016 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-21 16:29:12,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:29:12,016 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-21 16:29:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 16:29:12,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:12,019 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 16:29:12,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:29:12,020 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:12,021 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-21 16:29:12,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:12,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592598868] [2020-08-21 16:29:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:29:12,081 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:29:12,082 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:29:12,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:29:12,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:29:12 BoogieIcfgContainer [2020-08-21 16:29:12,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:29:12,108 INFO L168 Benchmark]: Toolchain (without parser) took 1704.20 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 111.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 54.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:12,108 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:29:12,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.94 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 180.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:12,110 INFO L168 Benchmark]: Boogie Preprocessor took 47.55 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 178.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:12,111 INFO L168 Benchmark]: RCFGBuilder took 467.27 ms. Allocated memory is still 202.9 MB. Free memory was 178.5 MB in the beginning and 156.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:12,112 INFO L168 Benchmark]: TraceAbstraction took 793.30 ms. Allocated memory is still 202.9 MB. Free memory was 155.8 MB in the beginning and 111.0 MB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:12,116 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.94 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 180.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.55 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 178.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.27 ms. Allocated memory is still 202.9 MB. Free memory was 178.5 MB in the beginning and 156.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 793.30 ms. Allocated memory is still 202.9 MB. Free memory was 155.8 MB in the beginning and 111.0 MB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 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: 0.7s, 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...