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/Problem14_label12_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:25:12,103 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:25:12,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:25:12,124 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:25:12,124 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:25:12,126 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:25:12,127 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:25:12,130 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:25:12,132 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:25:12,133 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:25:12,134 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:25:12,134 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:25:12,135 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:25:12,136 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:25:12,140 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:25:12,141 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:25:12,142 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:25:12,144 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:25:12,146 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:25:12,147 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:25:12,148 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:25:12,155 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:25:12,162 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:25:12,163 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:25:12,163 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:25:12,164 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:25:12,165 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:25:12,166 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:25:12,167 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:25:12,168 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:25:12,168 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:25:12,169 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 22:25:12,169 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:25:12,169 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:25:12,170 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:25:12,171 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:25:12,171 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 [2018-10-23 22:25:12,188 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:25:12,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:25:12,189 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:25:12,190 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:25:12,193 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:25:12,193 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:25:12,193 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:25:12,194 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:25:12,194 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:25:12,194 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:25:12,194 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:25:12,194 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:25:12,195 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:25:12,195 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:25:12,197 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:25:12,197 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:25:12,197 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:25:12,197 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:25:12,197 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:25:12,198 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:25:12,199 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:25:12,199 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:25:12,199 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:25:12,200 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:25:12,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:25:12,200 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:25:12,200 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:25:12,200 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:25:12,201 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:25:12,201 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:25:12,201 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:25:12,201 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:25:12,201 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:25:12,202 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:25:12,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:25:12,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:25:12,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:25:12,275 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:25:12,275 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:25:12,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-10-23 22:25:12,347 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/69d1eafff/88540f7677634811bb341f244f633306/FLAG5804af39e [2018-10-23 22:25:12,953 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:25:12,954 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-10-23 22:25:12,969 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/69d1eafff/88540f7677634811bb341f244f633306/FLAG5804af39e [2018-10-23 22:25:12,992 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/69d1eafff/88540f7677634811bb341f244f633306 [2018-10-23 22:25:13,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:25:13,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:25:13,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:25:13,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:25:13,016 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:25:13,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:25:12" (1/1) ... [2018-10-23 22:25:13,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4693fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13, skipping insertion in model container [2018-10-23 22:25:13,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:25:12" (1/1) ... [2018-10-23 22:25:13,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:25:13,119 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:25:13,593 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:25:13,598 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:25:13,770 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:25:13,795 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:25:13,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13 WrapperNode [2018-10-23 22:25:13,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:25:13,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:25:13,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:25:13,797 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:25:13,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (1/1) ... [2018-10-23 22:25:13,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (1/1) ... [2018-10-23 22:25:14,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:25:14,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:25:14,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:25:14,062 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:25:14,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (1/1) ... [2018-10-23 22:25:14,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (1/1) ... [2018-10-23 22:25:14,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (1/1) ... [2018-10-23 22:25:14,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (1/1) ... [2018-10-23 22:25:14,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (1/1) ... [2018-10-23 22:25:14,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (1/1) ... [2018-10-23 22:25:14,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (1/1) ... [2018-10-23 22:25:14,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:25:14,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:25:14,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:25:14,172 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:25:14,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (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 [2018-10-23 22:25:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:25:14,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:25:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:25:14,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:25:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:25:14,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:25:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:25:14,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:25:18,003 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:25:18,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:25:18 BoogieIcfgContainer [2018-10-23 22:25:18,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:25:18,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:25:18,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:25:18,009 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:25:18,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:25:12" (1/3) ... [2018-10-23 22:25:18,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b238756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:25:18, skipping insertion in model container [2018-10-23 22:25:18,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:13" (2/3) ... [2018-10-23 22:25:18,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b238756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:25:18, skipping insertion in model container [2018-10-23 22:25:18,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:25:18" (3/3) ... [2018-10-23 22:25:18,013 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label12_false-unreach-call_false-termination.c [2018-10-23 22:25:18,023 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:25:18,032 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:25:18,051 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:25:18,092 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:25:18,092 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:25:18,092 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:25:18,092 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:25:18,093 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:25:18,093 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:25:18,093 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:25:18,093 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:25:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:25:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-23 22:25:18,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:18,145 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:18,148 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:18,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:18,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1289249233, now seen corresponding path program 1 times [2018-10-23 22:25:18,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:18,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:18,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:18,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:18,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:18,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:18,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:25:18,546 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:18,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:25:18,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:25:18,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:25:18,567 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-23 22:25:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:20,394 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-23 22:25:20,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:25:20,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-23 22:25:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:20,418 INFO L225 Difference]: With dead ends: 691 [2018-10-23 22:25:20,418 INFO L226 Difference]: Without dead ends: 434 [2018-10-23 22:25:20,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:25:20,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-23 22:25:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-23 22:25:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-23 22:25:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-23 22:25:20,514 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 15 [2018-10-23 22:25:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:20,514 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-23 22:25:20,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:25:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-23 22:25:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-23 22:25:20,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:20,520 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:25:20,521 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:20,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:20,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1032198988, now seen corresponding path program 1 times [2018-10-23 22:25:20,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:20,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:20,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:20,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:20,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:20,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:20,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:25:20,827 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:20,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:25:20,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:25:20,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:25:20,830 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-23 22:25:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:24,388 INFO L93 Difference]: Finished difference Result 1587 states and 2933 transitions. [2018-10-23 22:25:24,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:25:24,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-10-23 22:25:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:24,403 INFO L225 Difference]: With dead ends: 1587 [2018-10-23 22:25:24,403 INFO L226 Difference]: Without dead ends: 1159 [2018-10-23 22:25:24,412 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 [2018-10-23 22:25:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2018-10-23 22:25:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1152. [2018-10-23 22:25:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2018-10-23 22:25:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1885 transitions. [2018-10-23 22:25:24,492 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1885 transitions. Word has length 85 [2018-10-23 22:25:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:24,493 INFO L481 AbstractCegarLoop]: Abstraction has 1152 states and 1885 transitions. [2018-10-23 22:25:24,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:25:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1885 transitions. [2018-10-23 22:25:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-23 22:25:24,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:24,508 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:25:24,509 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:24,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:24,509 INFO L82 PathProgramCache]: Analyzing trace with hash 273751564, now seen corresponding path program 1 times [2018-10-23 22:25:24,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:24,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:24,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:24,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:24,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:25,042 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-23 22:25:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:25,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:25,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:25:25,242 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:25,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:25:25,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:25:25,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:25:25,244 INFO L87 Difference]: Start difference. First operand 1152 states and 1885 transitions. Second operand 6 states. [2018-10-23 22:25:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:29,627 INFO L93 Difference]: Finished difference Result 4069 states and 6749 transitions. [2018-10-23 22:25:29,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 22:25:29,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-23 22:25:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:29,646 INFO L225 Difference]: With dead ends: 4069 [2018-10-23 22:25:29,647 INFO L226 Difference]: Without dead ends: 2923 [2018-10-23 22:25:29,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:25:29,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-10-23 22:25:29,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2805. [2018-10-23 22:25:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2018-10-23 22:25:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3985 transitions. [2018-10-23 22:25:29,744 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3985 transitions. Word has length 181 [2018-10-23 22:25:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:29,745 INFO L481 AbstractCegarLoop]: Abstraction has 2805 states and 3985 transitions. [2018-10-23 22:25:29,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:25:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3985 transitions. [2018-10-23 22:25:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-23 22:25:29,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:29,755 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 22:25:29,755 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:29,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:29,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1710923381, now seen corresponding path program 1 times [2018-10-23 22:25:29,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:29,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:29,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:29,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:29,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 24 proven. 132 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-23 22:25:29,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:25:29,977 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:25:29,978 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-10-23 22:25:29,981 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:25:30,074 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:25:30,074 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:25:33,534 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:25:33,536 INFO L272 AbstractInterpreter]: Visited 158 different actions 158 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:25:33,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:33,563 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:25:36,032 INFO L232 lantSequenceWeakener]: Weakened 307 states. On average, predicates are now at 77.31% of their original sizes. [2018-10-23 22:25:36,036 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:25:36,699 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:25:36,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:25:36,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-23 22:25:36,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:36,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 22:25:36,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 22:25:36,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:25:36,704 INFO L87 Difference]: Start difference. First operand 2805 states and 3985 transitions. Second operand 8 states. [2018-10-23 22:25:39,697 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:26:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:26:06,595 INFO L93 Difference]: Finished difference Result 5789 states and 8184 transitions. [2018-10-23 22:26:06,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:26:06,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 318 [2018-10-23 22:26:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:26:06,609 INFO L225 Difference]: With dead ends: 5789 [2018-10-23 22:26:06,609 INFO L226 Difference]: Without dead ends: 2990 [2018-10-23 22:26:06,619 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 319 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:26:06,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2018-10-23 22:26:06,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2988. [2018-10-23 22:26:06,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2988 states. [2018-10-23 22:26:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 4176 transitions. [2018-10-23 22:26:06,699 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 4176 transitions. Word has length 318 [2018-10-23 22:26:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:26:06,700 INFO L481 AbstractCegarLoop]: Abstraction has 2988 states and 4176 transitions. [2018-10-23 22:26:06,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 22:26:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 4176 transitions. [2018-10-23 22:26:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-23 22:26:06,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:26:06,713 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:26:06,713 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:26:06,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:06,714 INFO L82 PathProgramCache]: Analyzing trace with hash -585018255, now seen corresponding path program 1 times [2018-10-23 22:26:06,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:26:06,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:06,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:26:06,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:06,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:26:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:26:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 107 proven. 79 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-23 22:26:07,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:26:07,141 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:26:07,141 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 333 with the following transitions: [2018-10-23 22:26:07,142 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:26:07,149 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:26:07,149 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:26:12,860 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:26:12,861 INFO L272 AbstractInterpreter]: Visited 161 different actions 315 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:26:12,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:12,881 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:26:16,240 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 78.49% of their original sizes. [2018-10-23 22:26:16,240 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:27:06,611 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:27:06,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:27:06,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-23 22:27:06,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:27:06,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-23 22:27:06,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-23 22:27:06,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-10-23 22:27:06,614 INFO L87 Difference]: Start difference. First operand 2988 states and 4176 transitions. Second operand 20 states. [2018-10-23 22:28:16,299 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 22:29:17,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-23 22:29:17,299 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:29:17,305 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:29:17,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:29:17 BoogieIcfgContainer [2018-10-23 22:29:17,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:29:17,307 INFO L168 Benchmark]: Toolchain (without parser) took 244299.76 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 940.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:17,308 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-23 22:29:17,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:17,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 265.44 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:17,311 INFO L168 Benchmark]: Boogie Preprocessor took 109.20 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:17,312 INFO L168 Benchmark]: RCFGBuilder took 3832.06 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 136.3 MB). Peak memory consumption was 136.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:17,313 INFO L168 Benchmark]: TraceAbstraction took 239300.93 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 829.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:17,318 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 785.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 265.44 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.20 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3832.06 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 136.3 MB). Peak memory consumption was 136.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239300.93 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 829.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was constructing difference of abstraction (2988states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (2263 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 239.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 170.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 617 SDtfs, 4902 SDslu, 685 SDs, 0 SdLazy, 6703 SolverSat, 1318 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 686 GetRequests, 570 SyntacticMatches, 65 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 53.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2988occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9959658480944711 AbsIntWeakeningRatio, 0.09876543209876543 AbsIntAvgWeakeningVarsNumRemoved, 659.141975308642 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 127 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 931 NumberOfCodeBlocks, 931 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 926 ConstructedInterpolants, 0 QuantifiedInterpolants, 933233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 320/531 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown