java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:45:00,198 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:45:00,200 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:45:00,216 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:45:00,217 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:45:00,218 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:45:00,219 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:45:00,221 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:45:00,223 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:45:00,223 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:45:00,224 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:45:00,225 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:45:00,226 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:45:00,227 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:45:00,228 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:45:00,228 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:45:00,229 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:45:00,231 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:45:00,233 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:45:00,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:45:00,236 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:45:00,237 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:45:00,240 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:45:00,248 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 03:45:00,266 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:45:00,266 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:45:00,267 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:45:00,267 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:45:00,268 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:45:00,268 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:45:00,268 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:45:00,269 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:45:00,269 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:45:00,269 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:45:00,269 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:45:00,269 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:45:00,270 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:45:00,270 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:45:00,271 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:45:00,271 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:45:00,272 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:45:00,272 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:45:00,272 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:45:00,272 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:45:00,272 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:45:00,273 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:45:00,273 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:45:00,273 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:45:00,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:45:00,273 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:45:00,275 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:45:00,275 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:45:00,275 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:45:00,276 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:45:00,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:45:00,276 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:45:00,276 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:45:00,276 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:45:00,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:45:00,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:45:00,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:45:00,371 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:45:00,371 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:45:00,372 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c [2018-10-27 03:45:00,442 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a1f1172fa/0c750100b34b4ba780059c14b2836753/FLAGcb9b0efde [2018-10-27 03:45:01,171 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:45:01,173 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c [2018-10-27 03:45:01,197 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a1f1172fa/0c750100b34b4ba780059c14b2836753/FLAGcb9b0efde [2018-10-27 03:45:01,213 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a1f1172fa/0c750100b34b4ba780059c14b2836753 [2018-10-27 03:45:01,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:45:01,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:45:01,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:45:01,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:45:01,236 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:45:01,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:45:01" (1/1) ... [2018-10-27 03:45:01,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb433d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:01, skipping insertion in model container [2018-10-27 03:45:01,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:45:01" (1/1) ... [2018-10-27 03:45:01,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:45:01,410 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:45:02,759 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:45:02,764 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:45:03,258 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:45:03,292 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:45:03,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03 WrapperNode [2018-10-27 03:45:03,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:45:03,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:45:03,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:45:03,294 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:45:03,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (1/1) ... [2018-10-27 03:45:03,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (1/1) ... [2018-10-27 03:45:03,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:45:03,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:45:03,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:45:03,773 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:45:03,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (1/1) ... [2018-10-27 03:45:03,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (1/1) ... [2018-10-27 03:45:03,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (1/1) ... [2018-10-27 03:45:03,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (1/1) ... [2018-10-27 03:45:03,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (1/1) ... [2018-10-27 03:45:03,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (1/1) ... [2018-10-27 03:45:04,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (1/1) ... [2018-10-27 03:45:04,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:45:04,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:45:04,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:45:04,048 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:45:04,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (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 03:45:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:45:04,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:45:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 03:45:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 03:45:04,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:45:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:45:04,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:45:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:45:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:45:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:45:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:45:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:45:11,880 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:45:11,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:45:11 BoogieIcfgContainer [2018-10-27 03:45:11,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:45:11,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:45:11,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:45:11,892 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:45:11,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:45:01" (1/3) ... [2018-10-27 03:45:11,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1840258f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:45:11, skipping insertion in model container [2018-10-27 03:45:11,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:45:03" (2/3) ... [2018-10-27 03:45:11,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1840258f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:45:11, skipping insertion in model container [2018-10-27 03:45:11,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:45:11" (3/3) ... [2018-10-27 03:45:11,897 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label42_true-unreach-call.c [2018-10-27 03:45:11,909 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:45:11,929 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:45:11,948 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:45:12,006 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:45:12,007 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:45:12,007 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:45:12,007 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:45:12,007 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:45:12,008 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:45:12,008 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:45:12,008 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:45:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 03:45:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-27 03:45:12,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:45:12,066 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:45:12,069 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:45:12,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:45:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash -385321844, now seen corresponding path program 1 times [2018-10-27 03:45:12,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:45:12,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:12,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:45:12,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:12,128 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:45:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:45:12,697 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 03:45:12,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:45:12,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:45:12,708 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:45:12,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:45:12,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:45:12,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:45:12,730 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 03:45:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:45:19,485 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 03:45:19,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:45:19,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-10-27 03:45:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:45:19,524 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 03:45:19,524 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 03:45:19,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:45:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 03:45:19,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 03:45:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 03:45:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-27 03:45:19,696 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 56 [2018-10-27 03:45:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:45:19,697 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-27 03:45:19,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:45:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-27 03:45:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-27 03:45:19,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:45:19,708 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:45:19,708 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:45:19,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:45:19,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1814229039, now seen corresponding path program 1 times [2018-10-27 03:45:19,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:45:19,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:19,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:45:19,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:19,710 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:45:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:45:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:45:20,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:45:20,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:45:20,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:45:20,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:45:20,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:45:20,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:45:20,072 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-27 03:45:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:45:30,335 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-27 03:45:30,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:45:30,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-27 03:45:30,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:45:30,363 INFO L225 Difference]: With dead ends: 4422 [2018-10-27 03:45:30,363 INFO L226 Difference]: Without dead ends: 2954 [2018-10-27 03:45:30,369 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 [2018-10-27 03:45:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-27 03:45:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-27 03:45:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-27 03:45:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-10-27 03:45:30,484 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 131 [2018-10-27 03:45:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:45:30,485 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-10-27 03:45:30,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:45:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-10-27 03:45:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 03:45:30,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:45:30,496 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:45:30,496 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:45:30,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:45:30,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1830585943, now seen corresponding path program 1 times [2018-10-27 03:45:30,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:45:30,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:30,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:45:30,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:30,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:45:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:45:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:45:30,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:45:30,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:45:30,698 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:45:30,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:45:30,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:45:30,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:45:30,699 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-10-27 03:45:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:45:36,538 INFO L93 Difference]: Finished difference Result 7337 states and 12456 transitions. [2018-10-27 03:45:36,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:45:36,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-27 03:45:36,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:45:36,565 INFO L225 Difference]: With dead ends: 7337 [2018-10-27 03:45:36,565 INFO L226 Difference]: Without dead ends: 4415 [2018-10-27 03:45:36,574 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 [2018-10-27 03:45:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2018-10-27 03:45:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4397. [2018-10-27 03:45:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4397 states. [2018-10-27 03:45:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6494 transitions. [2018-10-27 03:45:36,696 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6494 transitions. Word has length 143 [2018-10-27 03:45:36,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:45:36,697 INFO L481 AbstractCegarLoop]: Abstraction has 4397 states and 6494 transitions. [2018-10-27 03:45:36,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:45:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6494 transitions. [2018-10-27 03:45:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-27 03:45:36,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:45:36,706 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:45:36,707 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:45:36,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:45:36,707 INFO L82 PathProgramCache]: Analyzing trace with hash 215050342, now seen corresponding path program 1 times [2018-10-27 03:45:36,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:45:36,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:36,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:45:36,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:36,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:45:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:45:37,054 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:45:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:45:37,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:45:37,228 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:45:37,229 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2018-10-27 03:45:37,231 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1971], [1973], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:45:37,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:45:37,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:45:39,929 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:45:40,036 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:45:40,038 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:45:40,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:45:40,055 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:45:41,684 INFO L227 lantSequenceWeakener]: Weakened 163 states. On average, predicates are now at 78.42% of their original sizes. [2018-10-27 03:45:41,684 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:45:41,996 INFO L415 sIntCurrentIteration]: We unified 167 AI predicates to 167 [2018-10-27 03:45:41,996 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:45:41,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:45:41,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-27 03:45:41,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:45:41,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:45:41,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:45:41,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:45:41,999 INFO L87 Difference]: Start difference. First operand 4397 states and 6494 transitions. Second operand 7 states. [2018-10-27 03:47:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:47:21,341 INFO L93 Difference]: Finished difference Result 9493 states and 13867 transitions. [2018-10-27 03:47:21,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:47:21,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2018-10-27 03:47:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:47:21,363 INFO L225 Difference]: With dead ends: 9493 [2018-10-27 03:47:21,364 INFO L226 Difference]: Without dead ends: 5102 [2018-10-27 03:47:21,376 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:47:21,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-10-27 03:47:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5100. [2018-10-27 03:47:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5100 states. [2018-10-27 03:47:21,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 7209 transitions. [2018-10-27 03:47:21,498 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 7209 transitions. Word has length 168 [2018-10-27 03:47:21,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:47:21,499 INFO L481 AbstractCegarLoop]: Abstraction has 5100 states and 7209 transitions. [2018-10-27 03:47:21,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:47:21,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 7209 transitions. [2018-10-27 03:47:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-10-27 03:47:21,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:47:21,507 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:47:21,508 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:47:21,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:47:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1101070807, now seen corresponding path program 1 times [2018-10-27 03:47:21,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:47:21,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:21,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:47:21,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:21,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:47:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:47:22,107 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:47:22,305 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:47:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 152 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:47:22,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:47:22,763 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:47:22,763 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 356 with the following transitions: [2018-10-27 03:47:22,764 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1971], [1973], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:47:22,774 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:47:22,774 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:47:26,134 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:47:34,470 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:47:34,470 INFO L272 AbstractInterpreter]: Visited 195 different actions 384 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:47:34,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:47:34,480 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:47:37,276 INFO L227 lantSequenceWeakener]: Weakened 121 states. On average, predicates are now at 78.59% of their original sizes. [2018-10-27 03:47:37,277 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:47:56,643 INFO L415 sIntCurrentIteration]: We unified 354 AI predicates to 354 [2018-10-27 03:47:56,643 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:47:56,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:47:56,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-10-27 03:47:56,644 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:47:56,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 03:47:56,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 03:47:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 03:47:56,646 INFO L87 Difference]: Start difference. First operand 5100 states and 7209 transitions. Second operand 15 states. Received shutdown request... [2018-10-27 03:48:56,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 03:48:56,039 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:48:56,045 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:48:56,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:48:56 BoogieIcfgContainer [2018-10-27 03:48:56,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:48:56,046 INFO L168 Benchmark]: Toolchain (without parser) took 234821.13 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 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 03:48:56,047 INFO L168 Benchmark]: CDTParser took 0.22 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 03:48:56,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2064.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:48:56,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 478.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -941.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:48:56,050 INFO L168 Benchmark]: Boogie Preprocessor took 274.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:48:56,050 INFO L168 Benchmark]: RCFGBuilder took 7833.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.6 MB). Peak memory consumption was 501.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:48:56,051 INFO L168 Benchmark]: TraceAbstraction took 224160.36 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -980.1 MB). Peak memory consumption was 884.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:48:56,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2064.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 478.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -941.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 274.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7833.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.6 MB). Peak memory consumption was 501.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224160.36 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -980.1 MB). Peak memory consumption was 884.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was constructing difference of abstraction (5100states) and FLOYD_HOARE automaton (currently 15 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (753 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 224.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 181.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1131 SDtfs, 8697 SDslu, 642 SDs, 0 SdLazy, 13179 SolverSat, 3766 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 551 GetRequests, 475 SyntacticMatches, 38 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5100occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961264569250885 AbsIntWeakeningRatio, 0.08829174664107485 AbsIntAvgWeakeningVarsNumRemoved, 738.3166986564299 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 853 NumberOfCodeBlocks, 853 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 848 ConstructedInterpolants, 0 QuantifiedInterpolants, 1535936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 250/357 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown