java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:26:09,186 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:26:09,189 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:26:09,202 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:26:09,203 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:26:09,204 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:26:09,205 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:26:09,207 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:26:09,209 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:26:09,210 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:26:09,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:26:09,211 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:26:09,212 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:26:09,213 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:26:09,214 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:26:09,215 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:26:09,216 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:26:09,218 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:26:09,220 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:26:09,221 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:26:09,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:26:09,224 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:26:09,227 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 01:26:09,227 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 01:26:09,227 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 01:26:09,228 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 01:26:09,229 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 01:26:09,230 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 01:26:09,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 01:26:09,233 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 01:26:09,233 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 01:26:09,234 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 01:26:09,234 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:26:09,234 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:26:09,235 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:26:09,236 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:26:09,237 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 01:26:09,267 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:26:09,267 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:26:09,268 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:26:09,268 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:26:09,269 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:26:09,269 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:26:09,269 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:26:09,269 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:26:09,270 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:26:09,270 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:26:09,270 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:26:09,270 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:26:09,271 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:26:09,271 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:26:09,272 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:26:09,272 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:26:09,272 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:26:09,272 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:26:09,272 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:26:09,273 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:26:09,273 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:26:09,273 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:26:09,273 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:26:09,274 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:26:09,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:26:09,275 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:26:09,275 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:26:09,276 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:26:09,276 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:26:09,276 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:26:09,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:26:09,277 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:26:09,277 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:26:09,277 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:26:09,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:26:09,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:26:09,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:26:09,377 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:26:09,377 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:26:09,378 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c [2018-11-07 01:26:09,453 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04116f4d/c6a9508dfa8a4adcb7a88320b861d47e/FLAG7fa454a16 [2018-11-07 01:26:10,228 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:26:10,229 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c [2018-11-07 01:26:10,254 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04116f4d/c6a9508dfa8a4adcb7a88320b861d47e/FLAG7fa454a16 [2018-11-07 01:26:10,278 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04116f4d/c6a9508dfa8a4adcb7a88320b861d47e [2018-11-07 01:26:10,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:26:10,297 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:26:10,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:26:10,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:26:10,305 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:26:10,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:10" (1/1) ... [2018-11-07 01:26:10,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7191107b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:10, skipping insertion in model container [2018-11-07 01:26:10,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:10" (1/1) ... [2018-11-07 01:26:10,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:26:10,414 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:26:11,227 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:26:11,235 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:26:11,527 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:26:11,555 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:26:11,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11 WrapperNode [2018-11-07 01:26:11,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:26:11,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:26:11,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:26:11,557 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:26:11,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... [2018-11-07 01:26:11,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... [2018-11-07 01:26:11,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:26:11,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:26:11,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:26:11,821 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:26:11,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... [2018-11-07 01:26:11,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... [2018-11-07 01:26:11,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... [2018-11-07 01:26:11,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... [2018-11-07 01:26:11,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... [2018-11-07 01:26:11,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... [2018-11-07 01:26:11,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... [2018-11-07 01:26:11,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:26:11,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:26:11,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:26:11,990 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:26:11,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:26:12,074 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:26:12,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:26:12,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:26:12,075 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:26:12,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:26:12,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:26:12,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:26:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:26:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:26:17,823 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:26:17,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:26:17 BoogieIcfgContainer [2018-11-07 01:26:17,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:26:17,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:26:17,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:26:17,841 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:26:17,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:26:10" (1/3) ... [2018-11-07 01:26:17,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a3e875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:26:17, skipping insertion in model container [2018-11-07 01:26:17,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:11" (2/3) ... [2018-11-07 01:26:17,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a3e875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:26:17, skipping insertion in model container [2018-11-07 01:26:17,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:26:17" (3/3) ... [2018-11-07 01:26:17,850 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label14_true-unreach-call.c [2018-11-07 01:26:17,864 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:26:17,878 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:26:17,900 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:26:17,955 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:26:17,955 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:26:17,955 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:26:17,955 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:26:17,956 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:26:17,956 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:26:17,956 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:26:17,956 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:26:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 01:26:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 01:26:18,006 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:18,008 INFO L375 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:18,011 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:18,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:18,018 INFO L82 PathProgramCache]: Analyzing trace with hash -594515452, now seen corresponding path program 1 times [2018-11-07 01:26:18,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:18,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:18,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:18,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:18,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:19,094 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 01:26:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:19,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:19,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 01:26:19,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:19,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 01:26:19,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 01:26:19,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 01:26:19,541 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 01:26:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:22,689 INFO L93 Difference]: Finished difference Result 1054 states and 1900 transitions. [2018-11-07 01:26:22,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:26:22,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-11-07 01:26:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:22,724 INFO L225 Difference]: With dead ends: 1054 [2018-11-07 01:26:22,725 INFO L226 Difference]: Without dead ends: 736 [2018-11-07 01:26:22,734 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 01:26:22,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-11-07 01:26:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 526. [2018-11-07 01:26:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-11-07 01:26:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2018-11-07 01:26:22,957 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 177 [2018-11-07 01:26:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:22,959 INFO L480 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2018-11-07 01:26:22,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 01:26:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2018-11-07 01:26:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-11-07 01:26:22,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:22,968 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:22,968 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:22,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:22,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1749816701, now seen corresponding path program 1 times [2018-11-07 01:26:22,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:22,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:22,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:22,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:22,971 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:23,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:23,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:26:23,297 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:23,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:26:23,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:26:23,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:26:23,301 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand 6 states. [2018-11-07 01:26:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:26,494 INFO L93 Difference]: Finished difference Result 1588 states and 2744 transitions. [2018-11-07 01:26:26,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 01:26:26,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-11-07 01:26:26,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:26,521 INFO L225 Difference]: With dead ends: 1588 [2018-11-07 01:26:26,522 INFO L226 Difference]: Without dead ends: 1068 [2018-11-07 01:26:26,525 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:26:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2018-11-07 01:26:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1025. [2018-11-07 01:26:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2018-11-07 01:26:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1721 transitions. [2018-11-07 01:26:26,594 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1721 transitions. Word has length 187 [2018-11-07 01:26:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:26,594 INFO L480 AbstractCegarLoop]: Abstraction has 1025 states and 1721 transitions. [2018-11-07 01:26:26,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:26:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1721 transitions. [2018-11-07 01:26:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 01:26:26,601 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:26,601 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:26,602 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:26,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:26,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1491408640, now seen corresponding path program 1 times [2018-11-07 01:26:26,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:26,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:26,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:26,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:26,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:26,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:26,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:26:26,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:26,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:26:26,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:26:26,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:26:26,951 INFO L87 Difference]: Start difference. First operand 1025 states and 1721 transitions. Second operand 3 states. [2018-11-07 01:26:31,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:31,291 INFO L93 Difference]: Finished difference Result 2894 states and 5042 transitions. [2018-11-07 01:26:31,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:26:31,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-11-07 01:26:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:31,311 INFO L225 Difference]: With dead ends: 2894 [2018-11-07 01:26:31,311 INFO L226 Difference]: Without dead ends: 1875 [2018-11-07 01:26:31,317 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:26:31,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2018-11-07 01:26:31,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1873. [2018-11-07 01:26:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2018-11-07 01:26:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3048 transitions. [2018-11-07 01:26:31,384 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3048 transitions. Word has length 190 [2018-11-07 01:26:31,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:31,385 INFO L480 AbstractCegarLoop]: Abstraction has 1873 states and 3048 transitions. [2018-11-07 01:26:31,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:26:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3048 transitions. [2018-11-07 01:26:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 01:26:31,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:31,394 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:31,394 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:31,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:31,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1722677517, now seen corresponding path program 1 times [2018-11-07 01:26:31,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:31,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:31,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:31,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:31,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:31,635 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 01:26:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:32,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:32,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:26:32,112 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:32,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:26:32,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:26:32,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:26:32,114 INFO L87 Difference]: Start difference. First operand 1873 states and 3048 transitions. Second operand 6 states. [2018-11-07 01:26:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:35,350 INFO L93 Difference]: Finished difference Result 5735 states and 10142 transitions. [2018-11-07 01:26:35,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 01:26:35,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-11-07 01:26:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:35,389 INFO L225 Difference]: With dead ends: 5735 [2018-11-07 01:26:35,390 INFO L226 Difference]: Without dead ends: 3868 [2018-11-07 01:26:35,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:26:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2018-11-07 01:26:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3768. [2018-11-07 01:26:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3768 states. [2018-11-07 01:26:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 6275 transitions. [2018-11-07 01:26:35,567 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 6275 transitions. Word has length 195 [2018-11-07 01:26:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:35,568 INFO L480 AbstractCegarLoop]: Abstraction has 3768 states and 6275 transitions. [2018-11-07 01:26:35,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:26:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 6275 transitions. [2018-11-07 01:26:35,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-07 01:26:35,584 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:35,584 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:35,584 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:35,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash -340490772, now seen corresponding path program 1 times [2018-11-07 01:26:35,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:35,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:35,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:35,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:35,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:35,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:35,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 01:26:35,913 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:35,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 01:26:35,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 01:26:35,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 01:26:35,915 INFO L87 Difference]: Start difference. First operand 3768 states and 6275 transitions. Second operand 7 states. [2018-11-07 01:26:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:37,866 INFO L93 Difference]: Finished difference Result 11468 states and 21130 transitions. [2018-11-07 01:26:37,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:26:37,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2018-11-07 01:26:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:37,940 INFO L225 Difference]: With dead ends: 11468 [2018-11-07 01:26:37,941 INFO L226 Difference]: Without dead ends: 7706 [2018-11-07 01:26:37,963 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:26:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2018-11-07 01:26:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 7509. [2018-11-07 01:26:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7509 states. [2018-11-07 01:26:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7509 states to 7509 states and 12934 transitions. [2018-11-07 01:26:38,311 INFO L78 Accepts]: Start accepts. Automaton has 7509 states and 12934 transitions. Word has length 196 [2018-11-07 01:26:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:38,312 INFO L480 AbstractCegarLoop]: Abstraction has 7509 states and 12934 transitions. [2018-11-07 01:26:38,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 01:26:38,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7509 states and 12934 transitions. [2018-11-07 01:26:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-11-07 01:26:38,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:38,344 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:38,345 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:38,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:38,345 INFO L82 PathProgramCache]: Analyzing trace with hash 677632951, now seen corresponding path program 1 times [2018-11-07 01:26:38,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:38,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:38,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:38,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:38,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:38,624 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:26:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:38,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:26:38,825 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:26:38,826 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 202 with the following transitions: [2018-11-07 01:26:38,836 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [877], [879], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 01:26:38,981 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:26:38,981 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 01:30:41,083 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 01:30:41,084 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 01:30:41,086 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 01:30:41,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:30:41,086 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 01:30:41,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:30:41,096 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 01:30:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:30:41,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 01:30:41,358 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 01:30:41,561 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 01:30:41,561 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:30:41,567 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:30:41,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:30:41 BoogieIcfgContainer [2018-11-07 01:30:41,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:30:41,570 INFO L168 Benchmark]: Toolchain (without parser) took 271274.99 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 423.5 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:41,572 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:30:41,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1258.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:41,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 263.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -832.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:41,580 INFO L168 Benchmark]: Boogie Preprocessor took 169.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:41,582 INFO L168 Benchmark]: RCFGBuilder took 5834.46 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 255.1 MB). Peak memory consumption was 255.1 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:41,584 INFO L168 Benchmark]: TraceAbstraction took 263743.21 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.2 GB). Free memory was 1.9 GB in the beginning and 2.9 GB in the end (delta: -1.0 GB). Peak memory consumption was 194.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:41,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1258.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 263.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -832.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5834.46 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 255.1 MB). Peak memory consumption was 255.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263743.21 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.2 GB). Free memory was 1.9 GB in the beginning and 2.9 GB in the end (delta: -1.0 GB). Peak memory consumption was 194.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1545]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1545). Cancelled while BasicCegarLoop was analyzing trace of length 202 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 263.6s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 16.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1154 SDtfs, 4187 SDslu, 1030 SDs, 0 SdLazy, 6185 SolverSat, 754 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7509occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 242.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 552 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 945 NumberOfCodeBlocks, 945 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 940 ConstructedInterpolants, 0 QuantifiedInterpolants, 544242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 48/48 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown