/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:17:21,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:17:21,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:17:21,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:17:21,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:17:21,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:17:21,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:17:21,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:17:21,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:17:21,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:17:21,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:17:21,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:17:21,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:17:21,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:17:21,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:17:21,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:17:21,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:17:21,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:17:21,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:17:21,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:17:21,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:17:21,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:17:22,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:17:22,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:17:22,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 11:17:22,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:17:22,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:17:22,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:17:22,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:17:22,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:17:22,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:17:22,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:17:22,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:17:22,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:17:22,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:17:22,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:17:22,021 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 [2020-08-18 11:17:22,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:17:22,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:17:22,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:17:22,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:17:22,069 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:17:22,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:17:22,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:17:22,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:17:22,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:17:22,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:17:22,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:17:22,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:17:22,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:17:22,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:17:22,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:17:22,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:17:22,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:17:22,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:17:22,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:17:22,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:17:22,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:17:22,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:17:22,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:17:22,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:17:22,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:17:22,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:17:22,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:17:22,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:17:22,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:17:22,076 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 [2020-08-18 11:17:22,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:17:22,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:17:22,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:17:22,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:17:22,377 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:17:22,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-18 11:17:22,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fdbcac7e/6c8874db495e4a50a97dd315a08cfc3e/FLAG3d36ec060 [2020-08-18 11:17:22,879 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:17:22,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-18 11:17:22,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fdbcac7e/6c8874db495e4a50a97dd315a08cfc3e/FLAG3d36ec060 [2020-08-18 11:17:23,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fdbcac7e/6c8874db495e4a50a97dd315a08cfc3e [2020-08-18 11:17:23,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:17:23,287 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:17:23,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:17:23,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:17:23,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:17:23,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:23" (1/1) ... [2020-08-18 11:17:23,294 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 18.08 11:17:23, skipping insertion in model container [2020-08-18 11:17:23,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:23" (1/1) ... [2020-08-18 11:17:23,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:17:23,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:17:23,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:17:23,523 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:17:23,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:17:23,716 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:17:23,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23 WrapperNode [2020-08-18 11:17:23,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:17:23,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:17:23,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:17:23,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:17:23,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23" (1/1) ... [2020-08-18 11:17:23,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23" (1/1) ... [2020-08-18 11:17:23,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23" (1/1) ... [2020-08-18 11:17:23,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23" (1/1) ... [2020-08-18 11:17:23,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23" (1/1) ... [2020-08-18 11:17:23,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23" (1/1) ... [2020-08-18 11:17:23,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23" (1/1) ... [2020-08-18 11:17:23,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:17:23,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:17:23,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:17:23,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:17:23,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23" (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 [2020-08-18 11:17:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:17:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:17:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-18 11:17:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 11:17:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:17:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:17:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-18 11:17:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:17:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 11:17:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:17:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:17:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:17:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 11:17:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 11:17:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:17:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:17:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:17:24,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:17:24,215 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 11:17:24,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:24 BoogieIcfgContainer [2020-08-18 11:17:24,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:17:24,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:17:24,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:17:24,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:17:24,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:17:23" (1/3) ... [2020-08-18 11:17:24,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a4092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:24, skipping insertion in model container [2020-08-18 11:17:24,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:23" (2/3) ... [2020-08-18 11:17:24,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a4092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:24, skipping insertion in model container [2020-08-18 11:17:24,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:24" (3/3) ... [2020-08-18 11:17:24,254 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-18 11:17:24,280 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:17:24,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:17:24,306 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:17:24,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:17:24,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:17:24,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:17:24,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:17:24,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:17:24,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:17:24,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:17:24,330 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:17:24,353 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 11:17:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 11:17:24,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:17:24,359 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] [2020-08-18 11:17:24,360 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:17:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:17:24,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-18 11:17:24,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:17:24,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851997932] [2020-08-18 11:17:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:17:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:17:24,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:17:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:17:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:17:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:17:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:17:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:17:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:17:24,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851997932] [2020-08-18 11:17:24,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:17:24,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:17:24,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120461054] [2020-08-18 11:17:24,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:17:24,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:17:24,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:17:24,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:17:24,638 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 11:17:24,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:17:24,912 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 11:17:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 11:17:24,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 11:17:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:17:24,926 INFO L225 Difference]: With dead ends: 86 [2020-08-18 11:17:24,927 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 11:17:24,931 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 [2020-08-18 11:17:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 11:17:24,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 11:17:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 11:17:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 11:17:24,973 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 11:17:24,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:17:24,974 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 11:17:24,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:17:24,974 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 11:17:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 11:17:24,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:17:24,975 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] [2020-08-18 11:17:24,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:17:24,976 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:17:24,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:17:24,977 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-18 11:17:24,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:17:24,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56035048] [2020-08-18 11:17:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:17:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:17:25,046 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:17:25,047 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:17:25,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:17:25,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:17:25 BoogieIcfgContainer [2020-08-18 11:17:25,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:17:25,074 INFO L168 Benchmark]: Toolchain (without parser) took 1785.84 ms. Allocated memory was 141.0 MB in the beginning and 207.1 MB in the end (delta: 66.1 MB). Free memory was 104.0 MB in the beginning and 112.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:25,075 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 11:17:25,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.48 ms. Allocated memory was 141.0 MB in the beginning and 207.1 MB in the end (delta: 66.1 MB). Free memory was 103.8 MB in the beginning and 185.0 MB in the end (delta: -81.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:25,077 INFO L168 Benchmark]: Boogie Preprocessor took 88.33 ms. Allocated memory is still 207.1 MB. Free memory was 185.0 MB in the beginning and 183.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:25,078 INFO L168 Benchmark]: RCFGBuilder took 413.49 ms. Allocated memory is still 207.1 MB. Free memory was 183.0 MB in the beginning and 160.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:25,079 INFO L168 Benchmark]: TraceAbstraction took 835.32 ms. Allocated memory is still 207.1 MB. Free memory was 159.8 MB in the beginning and 112.3 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-08-18 11:17:25,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 430.48 ms. Allocated memory was 141.0 MB in the beginning and 207.1 MB in the end (delta: 66.1 MB). Free memory was 103.8 MB in the beginning and 185.0 MB in the end (delta: -81.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.33 ms. Allocated memory is still 207.1 MB. Free memory was 185.0 MB in the beginning and 183.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.49 ms. Allocated memory is still 207.1 MB. Free memory was 183.0 MB in the beginning and 160.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 835.32 ms. Allocated memory is still 207.1 MB. Free memory was 159.8 MB in the beginning and 112.3 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...