java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem18_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:20:09,918 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:20:09,921 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:20:09,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:20:09,935 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:20:09,936 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:20:09,938 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:20:09,939 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:20:09,942 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:20:09,945 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:20:09,946 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:20:09,947 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:20:09,951 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:20:09,952 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:20:09,953 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:20:09,957 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:20:09,958 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:20:09,963 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:20:09,965 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:20:09,966 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:20:09,968 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:20:09,969 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:20:09,971 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:20:09,971 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:20:09,971 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:20:09,972 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:20:09,973 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:20:09,974 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:20:09,974 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:20:09,975 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:20:09,976 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:20:09,976 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 22:20:09,976 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:20:09,977 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:20:09,978 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:20:09,978 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:20:09,979 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:20:10,007 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:20:10,007 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:20:10,008 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:20:10,008 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:20:10,008 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:20:10,009 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:20:10,009 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:20:10,010 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:20:10,010 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:20:10,010 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:20:10,010 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:20:10,010 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:20:10,011 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:20:10,011 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:20:10,012 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:20:10,012 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:20:10,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:20:10,012 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:20:10,012 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:20:10,012 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:20:10,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:20:10,014 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:20:10,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:20:10,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:20:10,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:20:10,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:20:10,015 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:20:10,015 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:20:10,015 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:20:10,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:20:10,016 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:20:10,016 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:20:10,016 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:20:10,016 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:20:10,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:20:10,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:20:10,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:20:10,087 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:20:10,087 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:20:10,088 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label41_true-unreach-call.c [2018-10-24 22:20:10,158 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f5521022/c064876d9522492da4f32137cfd01469/FLAG9ca3913ff [2018-10-24 22:20:10,921 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:20:10,923 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label41_true-unreach-call.c [2018-10-24 22:20:10,952 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f5521022/c064876d9522492da4f32137cfd01469/FLAG9ca3913ff [2018-10-24 22:20:10,971 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f5521022/c064876d9522492da4f32137cfd01469 [2018-10-24 22:20:10,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:20:10,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:20:10,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:20:10,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:20:10,994 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:20:10,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:10" (1/1) ... [2018-10-24 22:20:10,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:10, skipping insertion in model container [2018-10-24 22:20:10,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:10" (1/1) ... [2018-10-24 22:20:11,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:20:11,162 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:20:12,256 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:20:12,261 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:20:12,748 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:20:12,778 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:20:12,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12 WrapperNode [2018-10-24 22:20:12,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:20:12,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:20:12,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:20:12,781 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:20:12,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... [2018-10-24 22:20:12,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... [2018-10-24 22:20:13,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:20:13,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:20:13,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:20:13,215 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:20:13,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... [2018-10-24 22:20:13,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... [2018-10-24 22:20:13,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... [2018-10-24 22:20:13,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... [2018-10-24 22:20:13,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... [2018-10-24 22:20:13,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... [2018-10-24 22:20:13,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... [2018-10-24 22:20:13,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:20:13,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:20:13,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:20:13,450 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:20:13,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 22:20:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:20:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:20:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:20:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:20:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:20:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:20:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:20:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:20:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:20:13,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:20:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:20:13,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:20:21,393 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:20:21,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:20:21 BoogieIcfgContainer [2018-10-24 22:20:21,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:20:21,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:20:21,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:20:21,400 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:20:21,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:20:10" (1/3) ... [2018-10-24 22:20:21,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc0c9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:20:21, skipping insertion in model container [2018-10-24 22:20:21,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:12" (2/3) ... [2018-10-24 22:20:21,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc0c9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:20:21, skipping insertion in model container [2018-10-24 22:20:21,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:20:21" (3/3) ... [2018-10-24 22:20:21,404 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label41_true-unreach-call.c [2018-10-24 22:20:21,414 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:20:21,423 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:20:21,441 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:20:21,486 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:20:21,487 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:20:21,487 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:20:21,487 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:20:21,487 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:20:21,488 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:20:21,488 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:20:21,488 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:20:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:20:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-24 22:20:21,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:21,546 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] [2018-10-24 22:20:21,548 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:21,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:21,555 INFO L82 PathProgramCache]: Analyzing trace with hash 64960460, now seen corresponding path program 1 times [2018-10-24 22:20:21,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:21,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:21,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:21,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:21,612 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:22,090 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:20:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:22,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:22,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:20:22,206 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:22,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:20:22,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:20:22,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:20:22,232 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 22:20:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:29,828 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 22:20:29,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:20:29,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-10-24 22:20:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:29,869 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 22:20:29,869 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 22:20:29,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:20:29,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 22:20:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 22:20:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 22:20:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 22:20:30,042 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 72 [2018-10-24 22:20:30,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:30,045 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 22:20:30,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:20:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 22:20:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 22:20:30,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:30,061 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:20:30,062 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:30,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:30,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1844075886, now seen corresponding path program 1 times [2018-10-24 22:20:30,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:30,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:30,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:30,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:30,064 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:30,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:30,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:20:30,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:30,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:20:30,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:20:30,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:20:30,394 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 22:20:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:40,370 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-24 22:20:40,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:20:40,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-24 22:20:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:40,392 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 22:20:40,393 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 22:20:40,399 INFO L605 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 [2018-10-24 22:20:40,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 22:20:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-24 22:20:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-24 22:20:40,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-10-24 22:20:40,492 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 146 [2018-10-24 22:20:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:40,493 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-10-24 22:20:40,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:20:40,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-10-24 22:20:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 22:20:40,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:40,498 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:20:40,501 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:40,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:40,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1891149621, now seen corresponding path program 1 times [2018-10-24 22:20:40,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:40,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:40,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:40,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:40,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:40,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:40,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:20:40,695 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:40,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:20:40,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:20:40,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:20:40,697 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 5 states. [2018-10-24 22:20:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:50,828 INFO L93 Difference]: Finished difference Result 10271 states and 17665 transitions. [2018-10-24 22:20:50,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:20:50,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-10-24 22:20:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:50,878 INFO L225 Difference]: With dead ends: 10271 [2018-10-24 22:20:50,878 INFO L226 Difference]: Without dead ends: 7349 [2018-10-24 22:20:50,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:20:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7349 states. [2018-10-24 22:20:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7349 to 7269. [2018-10-24 22:20:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2018-10-24 22:20:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 10825 transitions. [2018-10-24 22:20:51,167 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 10825 transitions. Word has length 149 [2018-10-24 22:20:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:51,168 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 10825 transitions. [2018-10-24 22:20:51,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:20:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 10825 transitions. [2018-10-24 22:20:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 22:20:51,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:51,173 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:20:51,174 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:51,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:51,174 INFO L82 PathProgramCache]: Analyzing trace with hash -46107601, now seen corresponding path program 1 times [2018-10-24 22:20:51,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:51,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:51,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:51,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:51,176 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:51,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:51,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:20:51,432 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:51,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:20:51,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:20:51,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:20:51,435 INFO L87 Difference]: Start difference. First operand 7269 states and 10825 transitions. Second operand 4 states. [2018-10-24 22:20:59,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:59,823 INFO L93 Difference]: Finished difference Result 17426 states and 25915 transitions. [2018-10-24 22:20:59,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:20:59,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2018-10-24 22:20:59,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:59,864 INFO L225 Difference]: With dead ends: 17426 [2018-10-24 22:20:59,865 INFO L226 Difference]: Without dead ends: 10163 [2018-10-24 22:20:59,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:20:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-10-24 22:21:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10153. [2018-10-24 22:21:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10153 states. [2018-10-24 22:21:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10153 states to 10153 states and 14100 transitions. [2018-10-24 22:21:00,152 INFO L78 Accepts]: Start accepts. Automaton has 10153 states and 14100 transitions. Word has length 179 [2018-10-24 22:21:00,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:21:00,153 INFO L481 AbstractCegarLoop]: Abstraction has 10153 states and 14100 transitions. [2018-10-24 22:21:00,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:21:00,153 INFO L276 IsEmpty]: Start isEmpty. Operand 10153 states and 14100 transitions. [2018-10-24 22:21:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-24 22:21:00,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:21:00,162 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:21:00,162 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:21:00,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:21:00,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1174362365, now seen corresponding path program 1 times [2018-10-24 22:21:00,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:21:00,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:21:00,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:21:00,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:21:00,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:21:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:21:00,470 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:21:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 130 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:21:00,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:21:00,688 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:21:00,690 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-10-24 22:21:00,694 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2099], [2101], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:21:00,782 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:21:00,783 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:21:02,220 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:21:02,695 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:21:02,698 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:21:02,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:21:02,805 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:21:04,549 INFO L232 lantSequenceWeakener]: Weakened 211 states. On average, predicates are now at 78.53% of their original sizes. [2018-10-24 22:21:04,549 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:21:04,977 INFO L413 sIntCurrentIteration]: We have 218 unified AI predicates [2018-10-24 22:21:04,977 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:21:04,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:21:04,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 22:21:04,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:21:04,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:21:04,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:21:04,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:21:04,980 INFO L87 Difference]: Start difference. First operand 10153 states and 14100 transitions. Second operand 7 states. [2018-10-24 22:22:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:12,824 INFO L93 Difference]: Finished difference Result 21005 states and 29032 transitions. [2018-10-24 22:22:12,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:22:12,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2018-10-24 22:22:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:12,857 INFO L225 Difference]: With dead ends: 21005 [2018-10-24 22:22:12,857 INFO L226 Difference]: Without dead ends: 10858 [2018-10-24 22:22:12,873 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:22:12,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10858 states. [2018-10-24 22:22:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10858 to 10856. [2018-10-24 22:22:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10856 states. [2018-10-24 22:22:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10856 states to 10856 states and 14812 transitions. [2018-10-24 22:22:13,074 INFO L78 Accepts]: Start accepts. Automaton has 10856 states and 14812 transitions. Word has length 219 [2018-10-24 22:22:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:13,074 INFO L481 AbstractCegarLoop]: Abstraction has 10856 states and 14812 transitions. [2018-10-24 22:22:13,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:22:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 10856 states and 14812 transitions. [2018-10-24 22:22:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-24 22:22:13,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:13,085 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-24 22:22:13,086 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:13,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:13,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1380574886, now seen corresponding path program 1 times [2018-10-24 22:22:13,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:13,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:13,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:13,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:13,088 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:13,568 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:13,764 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:13,988 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:14,396 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 22:22:14,656 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-24 22:22:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 254 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:22:14,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:22:14,973 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:22:14,973 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 407 with the following transitions: [2018-10-24 22:22:14,974 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2099], [2101], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:22:14,989 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:22:14,989 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:22:15,810 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:22:28,017 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:22:28,017 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:22:28,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:28,025 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:22:33,302 INFO L232 lantSequenceWeakener]: Weakened 96 states. On average, predicates are now at 78.84% of their original sizes. [2018-10-24 22:22:33,303 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:23:31,262 INFO L413 sIntCurrentIteration]: We have 405 unified AI predicates [2018-10-24 22:23:31,262 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:23:31,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:23:31,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-10-24 22:23:31,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:31,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 22:23:31,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 22:23:31,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-24 22:23:31,264 INFO L87 Difference]: Start difference. First operand 10856 states and 14812 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 22:24:02,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:24:02,682 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:24:02,687 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:24:02,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:24:02 BoogieIcfgContainer [2018-10-24 22:24:02,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:24:02,688 INFO L168 Benchmark]: Toolchain (without parser) took 231702.33 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -630.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 22:24:02,689 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 22:24:02,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1790.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:24:02,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 434.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -919.4 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:24:02,692 INFO L168 Benchmark]: Boogie Preprocessor took 234.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:24:02,692 INFO L168 Benchmark]: RCFGBuilder took 7945.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 498.3 MB). Peak memory consumption was 498.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:24:02,693 INFO L168 Benchmark]: TraceAbstraction took 221290.78 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -371.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 22:24:02,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1790.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 434.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -919.4 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 234.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7945.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 498.3 MB). Peak memory consumption was 498.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221290.78 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -371.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 204]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 204). Cancelled while BasicCegarLoop was constructing difference of abstraction (10856states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (111 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 221.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 135.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2312 SDtfs, 9689 SDslu, 724 SDs, 0 SdLazy, 18122 SolverSat, 4489 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 657 GetRequests, 499 SyntacticMatches, 118 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 58.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10856occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960773024402727 AbsIntWeakeningRatio, 0.09309791332263243 AbsIntAvgWeakeningVarsNumRemoved, 437.6035313001605 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 118 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1171 NumberOfCodeBlocks, 1171 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1165 ConstructedInterpolants, 0 QuantifiedInterpolants, 1441697 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 589/807 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown