java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:43:42,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:43:42,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:43:42,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:43:42,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:43:42,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:43:42,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:43:42,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:43:42,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:43:42,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:43:42,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:43:42,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:43:42,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:43:42,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:43:42,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:43:42,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:43:42,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:43:42,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:43:42,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:43:42,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:43:42,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:43:42,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:43:42,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:43:42,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:43:42,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:43:42,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:43:42,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:43:42,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:43:42,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:43:42,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:43:42,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:43:42,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:43:42,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:43:42,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:43:42,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:43:42,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:43:42,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:43:42,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:43:42,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:43:42,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:43:42,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:43:42,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:43:42,097 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:43:42,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:43:42,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:43:42,097 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:43:42,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:43:42,098 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:43:42,098 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:43:42,099 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:43:42,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:43:42,099 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:43:42,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:43:42,100 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:43:42,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:43:42,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:43:42,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:43:42,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:43:42,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:43:42,101 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:43:42,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:43:42,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:43:42,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:43:42,102 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:43:42,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:43:42,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:43:42,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:43:42,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:43:42,103 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:43:42,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:43:42,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:43:42,104 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:43:42,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:43:42,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:43:42,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:43:42,156 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:43:42,157 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:43:42,157 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2019-09-10 01:43:42,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64f886c6/f32b5104c42d4ba583558ccb04fac9fd/FLAGdc3deea62 [2019-09-10 01:43:42,682 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:43:42,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2019-09-10 01:43:42,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64f886c6/f32b5104c42d4ba583558ccb04fac9fd/FLAGdc3deea62 [2019-09-10 01:43:43,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64f886c6/f32b5104c42d4ba583558ccb04fac9fd [2019-09-10 01:43:43,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:43:43,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:43:43,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:43:43,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:43:43,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:43:43,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:43:43" (1/1) ... [2019-09-10 01:43:43,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28375a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43, skipping insertion in model container [2019-09-10 01:43:43,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:43:43" (1/1) ... [2019-09-10 01:43:43,090 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:43:43,109 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:43:43,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:43:43,296 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:43:43,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:43:43,454 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:43:43,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43 WrapperNode [2019-09-10 01:43:43,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:43:43,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:43:43,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:43:43,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:43:43,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43" (1/1) ... [2019-09-10 01:43:43,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43" (1/1) ... [2019-09-10 01:43:43,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43" (1/1) ... [2019-09-10 01:43:43,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43" (1/1) ... [2019-09-10 01:43:43,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43" (1/1) ... [2019-09-10 01:43:43,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43" (1/1) ... [2019-09-10 01:43:43,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43" (1/1) ... [2019-09-10 01:43:43,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:43:43,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:43:43,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:43:43,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:43:43,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:43:43,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:43:43,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:43:43,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2019-09-10 01:43:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2019-09-10 01:43:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2019-09-10 01:43:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2019-09-10 01:43:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:43:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:43:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-10 01:43:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2019-09-10 01:43:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2019-09-10 01:43:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:43:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:43:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:43:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:43:43,578 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2019-09-10 01:43:43,578 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2019-09-10 01:43:43,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:43:43,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:43:43,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:43:43,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:43:43,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:43:43,943 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:43:43,944 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-10 01:43:43,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:43:43 BoogieIcfgContainer [2019-09-10 01:43:43,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:43:43,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:43:43,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:43:43,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:43:43,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:43:43" (1/3) ... [2019-09-10 01:43:43,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ff9bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:43:43, skipping insertion in model container [2019-09-10 01:43:43,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:43" (2/3) ... [2019-09-10 01:43:43,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ff9bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:43:43, skipping insertion in model container [2019-09-10 01:43:43,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:43:43" (3/3) ... [2019-09-10 01:43:43,953 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2019-09-10 01:43:43,966 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:43:43,974 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:43:43,991 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:43:44,018 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:43:44,019 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:43:44,019 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:43:44,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:43:44,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:43:44,019 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:43:44,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:43:44,020 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:43:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-09-10 01:43:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-10 01:43:44,042 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:44,043 INFO L399 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] [2019-09-10 01:43:44,045 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:44,051 INFO L82 PathProgramCache]: Analyzing trace with hash 19072116, now seen corresponding path program 1 times [2019-09-10 01:43:44,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:44,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:44,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:44,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:44,095 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:43:44,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:44,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:43:44,273 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:44,279 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:43:44,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:43:44,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:43:44,303 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2019-09-10 01:43:44,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:44,396 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-09-10 01:43:44,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:43:44,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-09-10 01:43:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:44,415 INFO L225 Difference]: With dead ends: 46 [2019-09-10 01:43:44,416 INFO L226 Difference]: Without dead ends: 42 [2019-09-10 01:43:44,420 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:43:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-10 01:43:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-09-10 01:43:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-10 01:43:44,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2019-09-10 01:43:44,488 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 22 [2019-09-10 01:43:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:44,489 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2019-09-10 01:43:44,489 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:43:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2019-09-10 01:43:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-10 01:43:44,494 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:44,495 INFO L399 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, 1] [2019-09-10 01:43:44,495 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:44,496 INFO L82 PathProgramCache]: Analyzing trace with hash 433210865, now seen corresponding path program 1 times [2019-09-10 01:43:44,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:44,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:44,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:44,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:44,499 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:43:44,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:44,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:43:44,752 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:44,756 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:43:44,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:43:44,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:43:44,757 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 7 states. [2019-09-10 01:43:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:44,927 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-09-10 01:43:44,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:43:44,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-09-10 01:43:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:44,930 INFO L225 Difference]: With dead ends: 46 [2019-09-10 01:43:44,931 INFO L226 Difference]: Without dead ends: 46 [2019-09-10 01:43:44,934 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:43:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-10 01:43:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-09-10 01:43:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-10 01:43:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-09-10 01:43:44,950 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 25 [2019-09-10 01:43:44,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:44,950 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-09-10 01:43:44,951 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:43:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-09-10 01:43:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-10 01:43:44,955 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:44,957 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:44,957 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash 872501351, now seen corresponding path program 1 times [2019-09-10 01:43:44,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:44,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:44,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:44,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:44,963 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 01:43:45,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:45,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:43:45,062 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:45,063 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:43:45,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:43:45,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:43:45,064 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 4 states. [2019-09-10 01:43:45,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:45,105 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-09-10 01:43:45,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:43:45,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-09-10 01:43:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:45,108 INFO L225 Difference]: With dead ends: 48 [2019-09-10 01:43:45,109 INFO L226 Difference]: Without dead ends: 48 [2019-09-10 01:43:45,109 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:43:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-09-10 01:43:45,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-09-10 01:43:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-09-10 01:43:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2019-09-10 01:43:45,127 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 30 [2019-09-10 01:43:45,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:45,127 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2019-09-10 01:43:45,127 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:43:45,128 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2019-09-10 01:43:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-10 01:43:45,130 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:45,130 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:45,131 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:45,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1427405716, now seen corresponding path program 1 times [2019-09-10 01:43:45,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:45,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:45,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:45,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:45,133 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-10 01:43:45,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:45,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:43:45,251 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:45,252 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:43:45,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:43:45,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:43:45,253 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 5 states. [2019-09-10 01:43:45,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:45,318 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-09-10 01:43:45,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:43:45,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-09-10 01:43:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:45,320 INFO L225 Difference]: With dead ends: 51 [2019-09-10 01:43:45,320 INFO L226 Difference]: Without dead ends: 48 [2019-09-10 01:43:45,321 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:43:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-09-10 01:43:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-09-10 01:43:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-09-10 01:43:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-09-10 01:43:45,328 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 32 [2019-09-10 01:43:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:45,328 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-09-10 01:43:45,328 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:43:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-09-10 01:43:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-10 01:43:45,330 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:45,330 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:45,330 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:45,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:45,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2058214954, now seen corresponding path program 1 times [2019-09-10 01:43:45,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:45,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:45,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:45,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:45,332 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-10 01:43:45,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:45,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 01:43:45,452 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:45,453 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 01:43:45,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 01:43:45,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 01:43:45,454 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 8 states. [2019-09-10 01:43:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:45,609 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2019-09-10 01:43:45,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:43:45,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-09-10 01:43:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:45,611 INFO L225 Difference]: With dead ends: 52 [2019-09-10 01:43:45,611 INFO L226 Difference]: Without dead ends: 52 [2019-09-10 01:43:45,612 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-09-10 01:43:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-10 01:43:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2019-09-10 01:43:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-09-10 01:43:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-09-10 01:43:45,623 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 32 [2019-09-10 01:43:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:45,624 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-09-10 01:43:45,624 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 01:43:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-09-10 01:43:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-10 01:43:45,625 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:45,625 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:45,626 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:45,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:45,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1037566000, now seen corresponding path program 1 times [2019-09-10 01:43:45,630 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:45,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:45,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:45,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:45,632 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:43:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:43:45,735 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:43:45,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:43:45 BoogieIcfgContainer [2019-09-10 01:43:45,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:43:45,775 INFO L168 Benchmark]: Toolchain (without parser) took 2700.88 ms. Allocated memory was 134.7 MB in the beginning and 231.2 MB in the end (delta: 96.5 MB). Free memory was 90.4 MB in the beginning and 160.6 MB in the end (delta: -70.3 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:45,776 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory is still 108.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:43:45,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.41 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 90.4 MB in the beginning and 177.2 MB in the end (delta: -86.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:45,778 INFO L168 Benchmark]: Boogie Preprocessor took 53.34 ms. Allocated memory is still 201.9 MB. Free memory was 177.2 MB in the beginning and 175.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:45,779 INFO L168 Benchmark]: RCFGBuilder took 436.22 ms. Allocated memory is still 201.9 MB. Free memory was 175.4 MB in the beginning and 154.6 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:45,780 INFO L168 Benchmark]: TraceAbstraction took 1826.70 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 154.6 MB in the beginning and 160.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:45,783 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory is still 108.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.41 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 90.4 MB in the beginning and 177.2 MB in the end (delta: -86.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.34 ms. Allocated memory is still 201.9 MB. Free memory was 177.2 MB in the beginning and 175.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.22 ms. Allocated memory is still 201.9 MB. Free memory was 175.4 MB in the beginning and 154.6 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1826.70 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 154.6 MB in the beginning and 160.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 63. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; VAL [x=0, y=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0, \old(y)=0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; VAL [\old(x)=0, \result=0, lsw=1, msw=4293918721, x=0] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=0, __fpclassify_double(x)=0, x=0, y=0] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; VAL [\old(x)=0, \old(y)=0, \result=0, x=0, y=0] [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0, x=0, y=0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0, res == -0.0 && __signbit_double(res) == 1=1, x=0, y=0] [L79] CALL, EXPR __signbit_double(res) VAL [\old(x)=0] [L55] __uint32_t msw; VAL [\old(x)=0, x=0] [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; VAL [\old(x)=0, \result=0, msw=4293918728, x=0] [L79] RET, EXPR __signbit_double(res) VAL [__signbit_double(res)=0, res=0, res == -0.0 && __signbit_double(res) == 1=1, x=0, y=0] [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [__signbit_double(res)=0, res=0, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0, x=0, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. UNSAFE Result, 1.7s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 213 SDtfs, 44 SDslu, 652 SDs, 0 SdLazy, 120 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 8970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 15/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...