/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -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 [2020-08-19 00:17:14,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:17:14,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:17:14,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:17:14,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:17:14,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:17:14,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:17:14,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:17:14,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:17:14,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:17:14,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:17:14,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:17:14,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:17:15,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:17:15,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:17:15,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:17:15,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:17:15,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:17:15,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:17:15,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:17:15,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:17:15,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:17:15,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:17:15,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:17:15,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:17:15,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:17:15,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:17:15,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:17:15,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:17:15,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 00:17:15,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:17:15,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:17:15,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:17:15,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:17:15,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:17:15,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:17:15,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:17:15,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:17:15,099 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:17:15,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:17:15,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:17:15,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:17:15,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:17:15,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:17:15,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:17:15,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:17:15,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:17:15,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:17:15,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:17:15,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:17:15,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:17:15,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:17:15,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:17:15,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:17:15,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:17:15,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:17:15,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:17:15,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:17:15,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:17:15,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:17:15,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:17:15,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:17:15,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:17:15,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:17:15,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:17:15,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:17:15,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:17:15,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:17:15,473 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:17:15,474 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-19 00:17:15,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4635c7ad/3ebff1d2ae0e4f3ca5d792e046f50c53/FLAG49e7b59df [2020-08-19 00:17:16,023 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:17:16,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-19 00:17:16,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4635c7ad/3ebff1d2ae0e4f3ca5d792e046f50c53/FLAG49e7b59df [2020-08-19 00:17:16,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4635c7ad/3ebff1d2ae0e4f3ca5d792e046f50c53 [2020-08-19 00:17:16,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:17:16,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:17:16,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:16,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:17:16,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:17:16,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:16" (1/1) ... [2020-08-19 00:17:16,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4288bc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16, skipping insertion in model container [2020-08-19 00:17:16,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:16" (1/1) ... [2020-08-19 00:17:16,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:17:16,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:17:16,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:16,574 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:17:16,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:16,708 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:17:16,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16 WrapperNode [2020-08-19 00:17:16,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:16,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:17:16,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:17:16,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:17:16,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16" (1/1) ... [2020-08-19 00:17:16,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16" (1/1) ... [2020-08-19 00:17:16,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16" (1/1) ... [2020-08-19 00:17:16,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16" (1/1) ... [2020-08-19 00:17:16,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16" (1/1) ... [2020-08-19 00:17:16,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16" (1/1) ... [2020-08-19 00:17:16,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16" (1/1) ... [2020-08-19 00:17:16,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:17:16,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:17:16,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:17:16,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:17:16,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:17:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:17:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:17:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-19 00:17:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 00:17:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:17:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:17:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-19 00:17:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:17:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 00:17:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:17:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:17:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:17:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 00:17:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 00:17:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:17:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:17:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:17:17,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:17:17,161 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 00:17:17,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:17 BoogieIcfgContainer [2020-08-19 00:17:17,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:17:17,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:17:17,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:17:17,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:17:17,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:17:16" (1/3) ... [2020-08-19 00:17:17,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e71d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:17, skipping insertion in model container [2020-08-19 00:17:17,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:16" (2/3) ... [2020-08-19 00:17:17,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e71d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:17, skipping insertion in model container [2020-08-19 00:17:17,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:17" (3/3) ... [2020-08-19 00:17:17,177 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-19 00:17:17,193 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:17:17,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:17:17,216 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:17:17,245 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:17:17,246 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:17:17,246 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:17:17,246 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:17:17,246 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:17:17,246 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:17:17,247 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:17:17,247 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:17:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-19 00:17:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 00:17:17,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:17,278 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] [2020-08-19 00:17:17,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:17,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:17,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-19 00:17:17,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:17,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847426298] [2020-08-19 00:17:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:17,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:17:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:17,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:17:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:17:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:17:17,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847426298] [2020-08-19 00:17:17,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:17:17,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:17:17,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625989131] [2020-08-19 00:17:17,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:17:17,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:17:17,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:17:17,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:17:17,578 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-19 00:17:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:17:17,913 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-19 00:17:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:17:17,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 00:17:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:17:17,938 INFO L225 Difference]: With dead ends: 86 [2020-08-19 00:17:17,938 INFO L226 Difference]: Without dead ends: 43 [2020-08-19 00:17:17,946 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 [2020-08-19 00:17:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-19 00:17:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-19 00:17:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 00:17:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-19 00:17:18,014 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-19 00:17:18,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:17:18,015 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-19 00:17:18,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:17:18,016 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-19 00:17:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 00:17:18,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:18,020 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] [2020-08-19 00:17:18,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:17:18,022 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:18,022 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-19 00:17:18,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:18,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897074852] [2020-08-19 00:17:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:17:18,120 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:17:18,120 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:17:18,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:17:18,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:17:18 BoogieIcfgContainer [2020-08-19 00:17:18,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:17:18,148 INFO L168 Benchmark]: Toolchain (without parser) took 1801.56 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 108.4 MB in the end (delta: -5.4 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:18,149 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 00:17:18,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.37 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 181.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:18,151 INFO L168 Benchmark]: Boogie Preprocessor took 50.39 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:18,152 INFO L168 Benchmark]: RCFGBuilder took 407.22 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 156.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:18,153 INFO L168 Benchmark]: TraceAbstraction took 974.97 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 108.4 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:18,157 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.37 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 181.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.39 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.22 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 156.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 974.97 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 108.4 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: 0.8s, 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, 0.2s 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, 0.1s 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...