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/Problem11_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:32:10,049 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:32:10,051 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:32:10,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:32:10,064 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:32:10,066 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:32:10,067 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:32:10,070 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:32:10,072 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:32:10,073 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:32:10,080 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:32:10,081 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:32:10,085 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:32:10,088 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:32:10,091 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:32:10,092 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:32:10,093 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:32:10,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:32:10,100 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:32:10,104 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:32:10,105 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:32:10,106 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:32:10,108 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 02:32:10,108 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 02:32:10,108 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 02:32:10,112 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 02:32:10,114 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 02:32:10,115 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 02:32:10,115 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 02:32:10,116 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 02:32:10,116 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 02:32:10,117 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 02:32:10,117 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:32:10,117 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:32:10,118 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:32:10,120 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:32:10,120 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 [2018-10-27 02:32:10,152 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:32:10,152 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:32:10,154 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:32:10,154 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:32:10,155 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:32:10,155 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:32:10,155 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:32:10,155 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:32:10,155 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:32:10,156 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:32:10,156 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:32:10,156 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:32:10,157 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:32:10,157 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:32:10,157 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:32:10,157 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:32:10,157 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:32:10,158 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:32:10,158 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:32:10,158 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:32:10,159 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:32:10,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:32:10,159 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:32:10,159 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:32:10,159 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:32:10,160 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:32:10,160 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:32:10,160 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:32:10,160 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:32:10,161 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:32:10,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:32:10,161 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:32:10,161 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:32:10,161 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:32:10,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:32:10,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:32:10,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:32:10,251 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:32:10,251 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:32:10,252 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label21_true-unreach-call.c [2018-10-27 02:32:10,311 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c1e865b58/030e143f816d4530bfa57929689991b7/FLAG041df168b [2018-10-27 02:32:10,946 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:32:10,947 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label21_true-unreach-call.c [2018-10-27 02:32:10,969 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c1e865b58/030e143f816d4530bfa57929689991b7/FLAG041df168b [2018-10-27 02:32:10,990 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c1e865b58/030e143f816d4530bfa57929689991b7 [2018-10-27 02:32:11,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:32:11,006 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:32:11,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:32:11,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:32:11,011 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:32:11,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:32:10" (1/1) ... [2018-10-27 02:32:11,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422e573f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11, skipping insertion in model container [2018-10-27 02:32:11,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:32:10" (1/1) ... [2018-10-27 02:32:11,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:32:11,100 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:32:11,715 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:32:11,722 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:32:11,892 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:32:11,912 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:32:11,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11 WrapperNode [2018-10-27 02:32:11,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:32:11,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:32:11,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:32:11,914 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:32:11,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (1/1) ... [2018-10-27 02:32:11,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (1/1) ... [2018-10-27 02:32:12,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:32:12,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:32:12,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:32:12,222 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:32:12,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (1/1) ... [2018-10-27 02:32:12,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (1/1) ... [2018-10-27 02:32:12,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (1/1) ... [2018-10-27 02:32:12,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (1/1) ... [2018-10-27 02:32:12,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (1/1) ... [2018-10-27 02:32:12,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (1/1) ... [2018-10-27 02:32:12,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (1/1) ... [2018-10-27 02:32:12,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:32:12,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:32:12,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:32:12,375 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:32:12,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (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 [2018-10-27 02:32:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:32:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:32:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:32:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:32:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:32:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:32:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:32:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:32:16,698 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:32:16,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:32:16 BoogieIcfgContainer [2018-10-27 02:32:16,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:32:16,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:32:16,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:32:16,703 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:32:16,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:32:10" (1/3) ... [2018-10-27 02:32:16,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a00f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:32:16, skipping insertion in model container [2018-10-27 02:32:16,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:11" (2/3) ... [2018-10-27 02:32:16,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a00f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:32:16, skipping insertion in model container [2018-10-27 02:32:16,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:32:16" (3/3) ... [2018-10-27 02:32:16,708 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label21_true-unreach-call.c [2018-10-27 02:32:16,719 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:32:16,729 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:32:16,748 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:32:16,789 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:32:16,790 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:32:16,790 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:32:16,790 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:32:16,790 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:32:16,790 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:32:16,791 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:32:16,791 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:32:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 02:32:16,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-27 02:32:16,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:32:16,833 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] [2018-10-27 02:32:16,835 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:32:16,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:32:16,842 INFO L82 PathProgramCache]: Analyzing trace with hash -470198511, now seen corresponding path program 1 times [2018-10-27 02:32:16,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:32:16,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:32:16,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:32:16,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:32:16,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:32:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:32:17,309 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 02:32:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:32:17,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:32:17,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:32:17,329 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:32:17,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:32:17,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:32:17,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:32:17,358 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 02:32:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:32:20,790 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-10-27 02:32:20,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:32:20,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-27 02:32:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:32:20,817 INFO L225 Difference]: With dead ends: 982 [2018-10-27 02:32:20,817 INFO L226 Difference]: Without dead ends: 683 [2018-10-27 02:32:20,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:32:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-10-27 02:32:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-10-27 02:32:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-10-27 02:32:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-10-27 02:32:20,932 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 31 [2018-10-27 02:32:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:32:20,932 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-10-27 02:32:20,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:32:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-10-27 02:32:20,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-27 02:32:20,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:32:20,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:32:20,940 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:32:20,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:32:20,941 INFO L82 PathProgramCache]: Analyzing trace with hash 738270156, now seen corresponding path program 1 times [2018-10-27 02:32:20,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:32:20,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:32:20,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:32:20,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:32:20,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:32:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:32:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:32:21,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:32:21,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:32:21,265 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:32:21,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:32:21,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:32:21,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:32:21,268 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-10-27 02:32:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:32:25,295 INFO L93 Difference]: Finished difference Result 2514 states and 3863 transitions. [2018-10-27 02:32:25,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:32:25,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-10-27 02:32:25,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:32:25,313 INFO L225 Difference]: With dead ends: 2514 [2018-10-27 02:32:25,314 INFO L226 Difference]: Without dead ends: 1837 [2018-10-27 02:32:25,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:32:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2018-10-27 02:32:25,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1632. [2018-10-27 02:32:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2018-10-27 02:32:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2352 transitions. [2018-10-27 02:32:25,400 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2352 transitions. Word has length 105 [2018-10-27 02:32:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:32:25,401 INFO L481 AbstractCegarLoop]: Abstraction has 1632 states and 2352 transitions. [2018-10-27 02:32:25,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:32:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2352 transitions. [2018-10-27 02:32:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-27 02:32:25,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:32:25,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:32:25,409 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:32:25,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:32:25,409 INFO L82 PathProgramCache]: Analyzing trace with hash -528233849, now seen corresponding path program 1 times [2018-10-27 02:32:25,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:32:25,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:32:25,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:32:25,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:32:25,412 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:32:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:32:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:32:25,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:32:25,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 02:32:25,780 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:32:25,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 02:32:25,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 02:32:25,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 02:32:25,782 INFO L87 Difference]: Start difference. First operand 1632 states and 2352 transitions. Second operand 7 states. [2018-10-27 02:32:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:32:32,303 INFO L93 Difference]: Finished difference Result 4838 states and 7409 transitions. [2018-10-27 02:32:32,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 02:32:32,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2018-10-27 02:32:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:32:32,335 INFO L225 Difference]: With dead ends: 4838 [2018-10-27 02:32:32,336 INFO L226 Difference]: Without dead ends: 3017 [2018-10-27 02:32:32,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-27 02:32:32,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2018-10-27 02:32:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2797. [2018-10-27 02:32:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2797 states. [2018-10-27 02:32:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4031 transitions. [2018-10-27 02:32:32,481 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4031 transitions. Word has length 106 [2018-10-27 02:32:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:32:32,482 INFO L481 AbstractCegarLoop]: Abstraction has 2797 states and 4031 transitions. [2018-10-27 02:32:32,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 02:32:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4031 transitions. [2018-10-27 02:32:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-27 02:32:32,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:32:32,487 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, 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] [2018-10-27 02:32:32,488 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:32:32,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:32:32,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1578565365, now seen corresponding path program 1 times [2018-10-27 02:32:32,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:32:32,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:32:32,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:32:32,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:32:32,490 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:32:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:32:32,786 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:32:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 02:32:33,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:32:33,206 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:32:33,207 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-10-27 02:32:33,209 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [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], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 02:32:33,290 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:32:33,290 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:32:35,454 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:32:35,855 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:32:35,858 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 02:32:35,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:32:35,908 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:32:38,409 INFO L227 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 73.35% of their original sizes. [2018-10-27 02:32:38,409 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:32:38,942 INFO L415 sIntCurrentIteration]: We unified 178 AI predicates to 178 [2018-10-27 02:32:38,942 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:32:38,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:32:38,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 02:32:38,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:32:38,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 02:32:38,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 02:32:38,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 02:32:38,945 INFO L87 Difference]: Start difference. First operand 2797 states and 4031 transitions. Second operand 7 states. [2018-10-27 02:33:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:33:30,212 INFO L93 Difference]: Finished difference Result 5780 states and 8270 transitions. [2018-10-27 02:33:30,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:33:30,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2018-10-27 02:33:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:33:30,228 INFO L225 Difference]: With dead ends: 5780 [2018-10-27 02:33:30,229 INFO L226 Difference]: Without dead ends: 2989 [2018-10-27 02:33:30,241 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 02:33:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2018-10-27 02:33:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2987. [2018-10-27 02:33:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2987 states. [2018-10-27 02:33:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 4231 transitions. [2018-10-27 02:33:30,326 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 4231 transitions. Word has length 179 [2018-10-27 02:33:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:33:30,327 INFO L481 AbstractCegarLoop]: Abstraction has 2987 states and 4231 transitions. [2018-10-27 02:33:30,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 02:33:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 4231 transitions. [2018-10-27 02:33:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 02:33:30,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:33:30,332 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, 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, 1] [2018-10-27 02:33:30,332 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:33:30,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:33:30,333 INFO L82 PathProgramCache]: Analyzing trace with hash 649903183, now seen corresponding path program 1 times [2018-10-27 02:33:30,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:33:30,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:30,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:33:30,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:30,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:33:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:33:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 52 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:33:31,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:33:31,087 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:33:31,088 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-27 02:33:31,088 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [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], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 02:33:31,095 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:33:31,096 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:33:33,771 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:33:45,969 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:33:45,970 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 02:33:45,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:33:45,980 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:33:50,565 INFO L227 lantSequenceWeakener]: Weakened 91 states. On average, predicates are now at 74.15% of their original sizes. [2018-10-27 02:33:50,566 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:34:03,427 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-10-27 02:34:03,427 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:34:03,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:34:03,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [10] total 25 [2018-10-27 02:34:03,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:34:03,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 02:34:03,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 02:34:03,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-10-27 02:34:03,430 INFO L87 Difference]: Start difference. First operand 2987 states and 4231 transitions. Second operand 17 states. Received shutdown request... [2018-10-27 02:36:10,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 02:36:10,003 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:36:10,010 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:36:10,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:36:10 BoogieIcfgContainer [2018-10-27 02:36:10,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:36:10,011 INFO L168 Benchmark]: Toolchain (without parser) took 239006.00 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -69.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-27 02:36:10,012 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 02:36:10,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 905.95 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-27 02:36:10,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 308.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-27 02:36:10,014 INFO L168 Benchmark]: Boogie Preprocessor took 151.69 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 02:36:10,015 INFO L168 Benchmark]: RCFGBuilder took 4324.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 191.3 MB). Peak memory consumption was 191.3 MB. Max. memory is 7.1 GB. [2018-10-27 02:36:10,016 INFO L168 Benchmark]: TraceAbstraction took 233310.32 ms. Allocated memory was 2.3 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 1.5 GB in the end (delta: 511.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-27 02:36:10,021 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 905.95 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 308.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.69 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4324.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 191.3 MB). Peak memory consumption was 191.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233310.32 ms. Allocated memory was 2.3 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 1.5 GB in the end (delta: 511.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (2987states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (681 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 233.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 191.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 977 SDtfs, 3651 SDslu, 975 SDs, 0 SdLazy, 6646 SolverSat, 1069 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 431 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 16.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2987occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949603174603179 AbsIntWeakeningRatio, 0.14 AbsIntAvgWeakeningVarsNumRemoved, 547.785 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 427 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 644 NumberOfCodeBlocks, 644 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 639 ConstructedInterpolants, 0 QuantifiedInterpolants, 649890 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 153/292 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown